Shared pool and plsql

how can i pin blocks to plsql in oracle 11g/oracle 10g?
it is through exec dbms_shared_pool.keep()?

Yes.

Similar Messages

  • Explain one query in 256M shared pool and ORA-4031 .

    Hi,
    looks like Oracle 9.2.0.8 got some problems with explaining huge (1000 lines) queries, here
    goes ORA-4031 dump, shared pool is about 256 M but there are no other sessions in that DB only mine .
    I can reproduce that in 1GB shared pool as well .
    *** 2010-09-06 09:43:24.005
    *** SESSION ID:(13.24) 2010-09-06 09:43:23.997
    =================================
    Begin 4031 Diagnostic Information
    =================================
    The following information assists Oracle in diagnosing
    causes of ORA-4031 errors.  This trace may be disabled
    by setting the init.ora parameter _4031_dump_bitvec = 0
    ======================================
    Allocation Request Summary Information
    ======================================
    Current information setting:  00654fff
      Dump Interval=300 seconds  SGA Heap Dump Interval=3600 seconds
      Last Dump Time=09/06/2010 09:43:22
    Allocation request for: qknAllocate : qkn
    Heap: 70000002aa6f4e8, size: 640
    HEAP DUMP heap name="sga heap"  desc=700000000000058
    extent sz=0xfe0 alt=200 het=32767 rec=9 flg=-126 opc=0
    parent=0 owner=0 nex=0 xsz=0x0
    HEAP DUMP heap name="sql area"  desc=70000002aa6f4e8
    extent sz=0x1040 alt=32767 het=32 rec=0 flg=2 opc=2
    parent=700000000000058 owner=0 nex=0 xsz=0x1
    Subheap has 102506016 bytes of memory allocated
    ====================
    Process State Object
    ====================
    SO: 7000000222fe540, type: 2, owner: 0, flag: INIT/-/-/0x00
      (process) Oracle pid=12, calls cur/top: 700000021736ba0/700000021736ba0, flag: (0) -
                int error: 0, call error: 0, sess error: 0, txn error 0
      (post info) last post received: 199 0 4
                  last post received-location: kslpsr
                  last process to post me: 7000000222fca88 1 6
                  last post sent: 0 0 16
                  last post sent-location: ksasnd
                  last process posted by me: 7000000222fca88 1 6
      (latch info) wait_event=0 bits=0
        Process Group: DEFAULT, pseudo proc: 7000000212e7290
        O/S info: user: oracle, term: UNKNOWN, ospid: 6766752
        OSD pid info: Unix process pid: 6766752, image: oracle@prod3 (TNS V1-V3)
    =========================
    User Session State Object
    =========================
    SO: 7000000226ee540, type: 4, owner: 7000000222fe540, flag: INIT/-/-/0x00
      (session) trans: 0, creator: 7000000222fe540, flag: (100045) USR/- BSY/-/-/-/-/-
                DID: 0001-000C-00000002, short-term DID: 0000-0000-00000000
                txn branch: 0
                oct: 50, prv: 0, sql: 70000002aa7fbf8, psql: 0, user: 2622/INSTALL
                 program: sqlplus.exe
      application name: SQL*Plus, hash value=3669949024
      last wait for 'db file sequential read' blocking sess=0x0 seq=93 wait_time=11432
              file#=1, block#=106e8, blocks=1
      temporary object counter: 0
    =========================
    Current Parent KGL Object
    =========================
      LIBRARY OBJECT HANDLE: handle=70000002aa7fbf8
      name=
    explain plan for
    select *
    from salda
    where saldo <> 0
      and konta in ('361','362','363','371','372','373','380','381','382','383','384','385','386','387','388','389','390','391','392','393',
                       '394','395','396','397','398','399','400','401','402','403','404','405','406','407','408','409','410','411','412','413',
      hash=ff099bfd timestamp=09-06-2010 09:41:45
      namespace=CRSR flags=RON/KGHP/TIM/PN0/[10010000]
      kkkk-dddd-llll=0000-0001-0001 lock=N pin=X latch#=7
      lwt=70000002aa7fc28[70000002aa7fc28,70000002aa7fc28] ltm=70000002aa7fc38[70000002aa7fc38,70000002aa7fc38]
      pwt=70000002aa7fc58[70000002aa7fc58,70000002aa7fc58] ptm=70000002aa7fce8[70000002aa7fce8,70000002aa7fce8]
      ref=70000002aa7fc08[70000002aa7fc08, 70000002aa7fc08] lnd=70000002aa7fd00[70000002aa7fd00,70000002aa7fd00]
        LIBRARY OBJECT: object=70000002aa6fc98
        type=CRSR flags=EXS[0001] pflags= [00] status=VALD load=0
        CHILDREN: size=16
        child#    table reference   handle
             0 70000002aa6ff08 70000002aa6fbc0 70000002aa6f7a0
    ==================
    Current KGL Object
    ==================
      LIBRARY OBJECT HANDLE: handle=70000002aa6f7a0
      namespace=CRSR flags=RON/KGHP/PN0/[10010000]
      kkkk-dddd-llll=0000-0000-0000 lock=N pin=X latch#=7
      lwt=70000002aa6f7d0[70000002aa6f7d0,70000002aa6f7d0] ltm=70000002aa6f7e0[70000002aa6f7e0,70000002aa6f7e0]
      pwt=70000002aa6f800[70000002aa6f800,70000002aa6f800] ptm=70000002aa6f890[70000002aa6f890,70000002aa6f890]
      ref=70000002aa6f7b0[70000002aa6fbc0, 70000002aa6fbc0] lnd=70000002aa6f8a8[70000002aa6f8a8,70000002aa6f8a8]
        LIBRARY OBJECT: object=70000002aa6f3b8
        type=CRSR flags=EXS[0001] pflags= [00] status=VALD load=0
    ===========================
    Current Instatiation Object
    ===========================
    INSTANTIATION OBJECT: object=1102fa2e0
    type="cursor"[2] lock=70000002865ffe0 handle=70000002aa7fbf8 body=0 level=0
    flags=FST[60] executions=0
    cursor name:
    explain plan for
    select *
    from salda
    where saldo <> 0
      and nr_konta in ('361','362','363','371','372','373','380','381','382','383','384','385','386','387','388','389','390','391','392','393',
                       '394','395','396','397','398','399','400','401','402','403','404','405','406','407','408','409','410','411','412','413',
                       '414','432','450','453','454','455','456','457','458','459','460','461','462','463','464','465','466','467','468','469',
                       '470','471','472','473','474','475','476','477','478','479','480','481')
      and (
    (umowa = lpad('2169725150',10) and nr_klasy = lpad('7',3)) or
    (umowa = lpad('2170639147',10) and nr_klasy = lpad('13',3)) or
    (umowa = lpad('2170815147',10) and nr_klasy = lpad('13',3)) or
    (umowa = lpad('2170991138',10) and nr_klasy = lpad('13',3)) or
    (umowa = lpad('2173034150',10) and nr_klasy = lpad('7',3)) or
    (umowa = lpad('2173821138',10) and nr_klasy = lpad('13',3)) or
    (umowa = lpad('2174491138',10) and nr_klasy = lpad('13',3)) or
    (umowa = lpad('2176065138',10) and nr_klasy = lpad('13',3)) or
    (umowa = lpad('2177180150',10) and nr_klasy = lpad('7',3)) or
    (umowa = lpad('2178183150',10) and nr_klasy = lpad('7',3)) or
    (umowa = lpad('2178609150',10) and nr_klasy = lpad('7',3)) or
    (umowa = lpad('2180241147',10) and nr_klasy = lpad('27',3)) or
    (umowa = lpad('2180252147',10) and nr_klasy = lpad('13',3)) or
    (umowa = lpad('2180377148',10) and nr_klasy = lpad('13',3)) or
    (umowa = lpad('2180787148',10) and nr_klasy = lpad('13',3)) or
    (umowa = lpad('2181011148',10) and nr_klasy = lpad('13',3)) or
    (umowa = lpad('2183314150',10) and nr_klasy = lpad('9',3)) or
    (umowa = lpad('2187754150',10) and nr_klasy = lpad('9',3)) or
    (umowa = lpad('2189036150',10) and nr_klasy = lpad('9',3)) or
    (umowa = lpad('2189362150',10) and nr_klasy = lpad('9',3)) or
    (umowa = lpad('2189685150',10) and nr_klasy = lpad('27',3)) or
    (umowa = lpad('2191061124',10) and nr_klasy = lpad('7',3)) or
    (umowa = lpad('2194768150',10) and nr_klasy = lpad('27',3)) or
    (umowa = lpad('2195063150',10) and nr_klasy = lpad('9',3)) or
    (umowa = lpad('2195568150',10) and nr_klasy = lpad('9',3)) or
    (umowa = lpad('2196774143',10) and nr_klasy = lpad('7',3)) or
    (umowa = lpad('2196872143',10) and nr_klasy = lpad('7',3)) or
    (umowa = lpad('2196964143',10) and nr_klasy = lpad('7',3)) or
    .... a lot off similar lines
    child pin: 0, child lock: 70000002865fb18, parent lock: 70000002865ffe0
    xscflg: 4004, parent handle: 70000002aa7fbf8, xscfl2: 0
    ----- Call Stack Trace -----
    calling              call     entry                argument values in hex
    location             type     point                (? means dubious value)
    ksm_4031_dump+065c   bl       ksedst               110006450 ?
    ksmasg+0084          bl       ksm_4031_dump        FFFFFFFFFFF5F60 ? 10299AAF8 ?
                                                       000000000 ? 70000002A9007F8 ?
                                                       000000000 ? 000000000 ?
    kghnospc+0178        bl       _ptrgl
    kghalp+00f0          bl       kghnospc             FFFFFFFFFFF6150 ?
                                                       422222247FFFFFFC ?
                                                       100107620 ? 080000000 ?
                                                       000000000 ?
    kksalc+0048          bl       kghalp               100107620 ? 000000000 ?
                                                       FFFFFFFFFFF62C0 ? 000000000 ?
                                                       000000080 ? 000000003 ?
    qknAllocate+0040     bl       kksalc               70000002AC2E1C0 ?
                                                       70000002C873DD8 ?
                                                       70000002AC2E1C0 ?
    qknltAllocate+00d0   bl       qknAllocate          FFFFFFFFFFF65C0 ?
                                                       7000000345292A0 ? 000000000 ?
                                                       000000003 ?
    qkatab+0ec8          bl       qknltAllocate        000000000 ? 000000000 ?
                                                       000000000 ? 000000000 ?
                                                       000000000 ? 000000000 ?
                                                       000000000 ? 000000000 ?
                                                       70000002C874170 ?
    qkajoi+0b30          bl       qkatab               000000000 ? 110378F00 ?
                                                       000000000 ? 000000042 ?
                                                       100002100050000 ? 110378530 ?
    qkaqkn+08d0          bl       qkajoi               000000000 ? 000000000 ?
                                                       000000000 ? 000000000 ?
                                                       000000000 ? 000000000 ?
                                                       000000000 ? 000000000 ?
    qkadrv+07a0          bl       qkaqkn               000000000 ? 10299B690 ?
    ===============================
    Memory Utilization of Subpool 1
    ===============================
         Allocation Name          Size
    "free memory              "   148632616
    "miscellaneous            "     3998104
    "qmps connections         "     1454200
    "errors                   "           0
    "txncallback              "      246640
    "PL/SQL MPCODE            "      506520
    "enqueue                  "     6054632
    "KSXR pending messages que"      853952
    "KQR L PO                 "      221192
    "parameters               "        1064
    "Checkpoint queue         "     1026560
    "1M buffer                "      528384
    "db_block_hash_buckets    "      589824
    "fixed allocation callback"        1112
    "sim trace entries        "      196608
    "KGLS heap                "      374728
    "KGK heap                 "         552
    "channel handle           "      780672
    "MTTR advisory            "       34088
    "DML lock                 "     1022032
    "trigger source           "        2288
    "trigger defini           "         280
    "dictionary cache         "     2137216
    "table definiti           "         456
    "KQR X PO                 "       28352
    "transaction              "     2747760
    "constraints              "      824960
    "library cache            "     2030512
    "message pool freequeue   "      213264
    "sql area                 "     1546168
    "sessions                 "     4467008
    "replication session stats"     1004720
    "event statistics per sess"    18791304
    "KQR S SO                 "        5632
    "sim memory hea           "      157768
    "PL/SQL DIANA             "       80104
    "KQR M PO                 "      141320
    "messages                 "      624000
    ===============================
    Memory Utilization of Subpool 2
    ===============================
         Allocation Name          Size
    "free memory              "     6285488
    "miscellaneous            "     8927008
    "log_buffer               "     1056800
    "FileOpenBlock            "    16270720
    "sim memory hea           "      162008
    "KQR S SO                 "        9472
    "transaction              "     3297312
    "PL/SQL DIANA             "           0
    "KGLS heap                "       47776
    "table definiti           "           0
    "db_handles               "     3480000
    "KQR L PO                 "      213056
    "Temporary Tables State Ob"      775488
    "trigger inform           "           0
    "message pool freequeue   "      558720
    "trigger defini           "           0
    "fixed allocation callback"        1168
    "branch                   "     1180120
    "ktlbk state objects      "     1948360
    "PLS non-lib hp           "        2088
    "KGK heap                 "        6448
    "KQR M SO                 "        1024
    "dictionary cache         "     2137216
    "parameters               "           0
    "Checkpoint queue         "     1026560
    "trigger source           "           0
    "enqueue resources        "      768192
    "library cache            "     1798152
    "KSXR receive buffers     "     1034000
    "sql area                 "   105380864
    "processes                "     4104000
    "sessions                 "     4469712
    "joxs heap init           "        4240
    "errors                   "           0
    "event statistics per sess"    18779936
    "PL/SQL MPCODE            "           0
    "KQR M PO                 "      173592
    "UNDO INFO SEGMENTED ARRAY"      649856
    LIBRARY CACHE STATISTICS:
    namespace           gets hit ratio      pins hit ratio    reloads   invalids
    CRSR                3184     0.874     12550     0.950         97         11
    TABL/PRCD/TYPE      1917     0.871      2293     0.811          0          0
    BODY/TYBD             52     0.788        52     0.788          0          0
    TRGR                  33     0.939        33     0.939          0          0
    INDX                  74     0.514        43     0.140          0          0
    CLST                 353     0.977       489     0.980          0          0
    OBJE                   0     0.000         0     0.000          0          0
    PIPE                   0     0.000         0     0.000          0          0
    LOB                    0     0.000         0     0.000          0          0
    DIR                    0     0.000         0     0.000          0          0
    QUEU                   0     0.000         0     0.000          0          0
    OBJG                   0     0.000         0     0.000          0          0
    PROP                   0     0.000         0     0.000          0          0
    JVSC                   0     0.000         0     0.000          0          0
    JVRE                   0     0.000         0     0.000          0          0
    ROBJ                   0     0.000         0     0.000          0          0
    REIP                   0     0.000         0     0.000          0          0
    CPOB                   0     0.000         0     0.000          0          0
    EVNT                   8     0.750        91     0.978          0          0
    SUMM                   0     0.000         0     0.000          0          0
    DIMN                   0     0.000         0     0.000          0          0
    CTX                    0     0.000         0     0.000          0          0
    OUTL                   0     0.000         0     0.000          0          0
    RULS                   0     0.000         0     0.000          0          0
    RMGR                   0     0.000         0     0.000          0          0
    IFSD                   0     0.000         0     0.000          0          0
    PPLN                   0     0.000         0     0.000          0          0
    PCLS                   0     0.000         0     0.000          0          0
    SUBS                   0     0.000         0     0.000          0          0
    LOCS                   0     0.000         0     0.000          0          0
    RMOB                   0     0.000         0     0.000          0          0
    RSMD                   0     0.000         0     0.000          0          0
    JVSD                   0     0.000         0     0.000          0          0
    ENPR                   0     0.000         0     0.000          0          0
    RELC                   0     0.000         0     0.000          0          0
    STREAM                 0     0.000         0     0.000          0          0
    APPLY                  0     0.000         0     0.000          0          0
    APPLY SOURCE           0     0.000         0     0.000          0          0
    APPLY DESTN            0     0.000         0     0.000          0          0
    TEST                   0     0.000         0     0.000          0          0
    CUMULATIVE          5621     0.874     15551     0.928         97         11
    Permanent space allocted for Load Locks
    LATCH:0  TOTAL SPACE: 4248
    FREELIST CHUNK COUNT:59  OBJECT SIZE:72
    Permanent space allocted for KGL pins
    LATCH:0  TOTAL SPACE: 4224
    FREELIST CHUNK COUNT:13  OBJECT SIZE:128
    LATCH:1  TOTAL SPACE: 4224
    FREELIST CHUNK COUNT:15  OBJECT SIZE:128
    LATCH:2  TOTAL SPACE: 4224
    FREELIST CHUNK COUNT:18  OBJECT SIZE:128
    LATCH:3  TOTAL SPACE: 4224
    FREELIST CHUNK COUNT:19  OBJECT SIZE:128
    LATCH:4  TOTAL SPACE: 4224
    FREELIST CHUNK COUNT:21  OBJECT SIZE:128
    LATCH:5  TOTAL SPACE: 4224
    FREELIST CHUNK COUNT:27  OBJECT SIZE:128
    LATCH:6  TOTAL SPACE: 4224
    FREELIST CHUNK COUNT:16  OBJECT SIZE:128
    Permanent space allocted for KGL locks
    LATCH:0  TOTAL SPACE: 4216
    FREELIST CHUNK COUNT:11  OBJECT SIZE:136
    LATCH:1  TOTAL SPACE: 4216
    FREELIST CHUNK COUNT:13  OBJECT SIZE:136
    LATCH:2  TOTAL SPACE: 4216
    FREELIST CHUNK COUNT:16  OBJECT SIZE:136
    ...<snipped>...any ideas ?

    GregG wrote:
    Thanks,
    but I'm interested in what is the particular problem. Looks like sql area is short on free chunks .I can't say if it is an oracle bug so feel free to ignore my post.
    select *
    from salda
    where saldo  0
      and nr_konta in ('361','362','363','371','372','373','380','381','382','383','384','385','386','387','388','389','390','391','392','393',
                       '394','395','396','397','398','399','400','401','402','403','404','405','406','407','408','409','410','411','412','413',
                       '414','432','450','453','454','455','456','457','458','459','460','461','462','463','464','465','466','467','468','469',
                       '470','471','472','473','474','475','476','477','478','479','480','481')
      and (
    (umowa = lpad('2169725150',10) and nr_klasy = lpad('7',3)) or
    (umowa = lpad('2170639147',10) and nr_klasy = lpad('13',3)) or
    (umowa = lpad('2170815147',10) and nr_klasy = lpad('13',3)) or
    (umowa = lpad('2170991138',10) and nr_klasy = lpad('13',3)) or
    (umowa = lpad('2173034150',10) and nr_klasy = lpad('7',3)) or
    (umowa = lpad('2173821138',10) and nr_klasy = lpad('13',3)) or
    (umowa = lpad('2174491138',10) and nr_klasy = lpad('13',3)) or
    (umowa = lpad('2176065138',10) and nr_klasy = lpad('13',3)) or
    (umowa = lpad('2177180150',10) and nr_klasy = lpad('7',3)) or
    (umowa = lpad('2178183150',10) and nr_klasy = lpad('7',3)) or
    (umowa = lpad('2178609150',10) and nr_klasy = lpad('7',3)) or
    (umowa = lpad('2180241147',10) and nr_klasy = lpad('27',3)) or
    (umowa = lpad('2180252147',10) and nr_klasy = lpad('13',3)) or
    (umowa = lpad('2180377148',10) and nr_klasy = lpad('13',3)) or
    (umowa = lpad('2180787148',10) and nr_klasy = lpad('13',3)) or
    (umowa = lpad('2181011148',10) and nr_klasy = lpad('13',3)) or
    (umowa = lpad('2183314150',10) and nr_klasy = lpad('9',3)) or
    (umowa = lpad('2187754150',10) and nr_klasy = lpad('9',3)) or
    (umowa = lpad('2189036150',10) and nr_klasy = lpad('9',3)) or
    (umowa = lpad('2189362150',10) and nr_klasy = lpad('9',3)) or
    (umowa = lpad('2189685150',10) and nr_klasy = lpad('27',3)) or
    (umowa = lpad('2191061124',10) and nr_klasy = lpad('7',3)) or
    (umowa = lpad('2194768150',10) and nr_klasy = lpad('27',3)) or
    (umowa = lpad('2195063150',10) and nr_klasy = lpad('9',3)) or
    (umowa = lpad('2195568150',10) and nr_klasy = lpad('9',3)) or
    (umowa = lpad('2196774143',10) and nr_klasy = lpad('7',3)) or
    (umowa = lpad('2196872143',10) and nr_klasy = lpad('7',3)) or
    (umowa = lpad('2196964143',10) and nr_klasy = lpad('7',3)) or
    .... a lot off similar linesThis looks like an ideal candidate for using a Global Temporary table (if you can).
    So if you can insert all combination of valid values for "umowa" and "nr_klasy" columns in a GTT,
    you can simplify your query as
    select *
    from salda
    where saldo  0
      and nr_konta in ('361','362','363','371','372','373','380','381','382','383','384','385','386','387','388','389','390','391','392','393',
                       '394','395','396','397','398','399','400','401','402','403','404','405','406','407','408','409','410','411','412','413',
                       '414','432','450','453','454','455','456','457','458','459','460','461','462','463','464','465','466','467','468','469',
                       '470','471','472','473','474','475','476','477','478','479','480','481')
    and (umowa, nr_klasy) in (select lpad(col1,10), lpad(col2,3) from gtt_temp)

  • Sql parse and shared pool

    hi friends i have a procedure
    and its have *(AD IS NULL OR NVAD LIKE AD||'%') AND (SOYAD IS NULL OR NVSOYAD LIKE SOYAD||'%')*
    if i use this query and pass different things for AD ; is it become a brand new query for oracle because of ||'%' or its parse and put in shared pool and for a sometime this query don't parse and take from shared pool
       PROCEDURE P_YENI_TALEP_LISTELE(RC_CURSOR OUT SYS_REFCURSOR,TOPLAM_TALEP OUT NUMBER,SAYFA_INDEX IN NUMBER,SAYFA_BUYUKLUK  IN NUMBER,TC_NO IN NVARCHAR2,AD IN NVARCHAR2,SOYAD IN NVARCHAR2,ONAY IN NUMBER,H_TIP_ID IN NUMBER)
        AS 
        BEGIN
          OPEN RC_CURSOR FOR  SELECT TA.NT_ID,TA.NTC_NO,HI.NVHIZMET_TUR AS NVARM_KONU,TA.NVOPRTR_CVP,TA.NVGRSM_SURE,TA.NVGRSM_DRM,
                       TA.NHIZMET,TA.BONAY,TA.DTLP_TRH,TH.NVAD,TH.NVSOYAD,TH.NVILCE ,TA.DALINAN_TRH,
                       TA.DBRKLAN_TRH,TA.NG_ID,GU.NVAD1||' - '||GU.NVAD2 AS GUZERGAH,HI.NH_TIP_ID,HT.NVHIZMET_TIP,
                FROM H_TALEP TA,TNM_HASTA_BILGI TH,TNM_HIZMET HI,SBT_HIZMET_TIP HT,TNM_GUZERGAH GU
          WHERE TA.NTC_NO=TH.NTC_NO AND TA.NH_ID=HI.NH_ID AND HI.NH_TIP_ID=HT.NH_TIP_ID AND(TC_NO IS NULL OR TA.NTC_NO=TO_NUMBER(TC_NO)) AND TA.NG_ID=GU.NG_ID AND
                          *(AD IS NULL OR NVAD LIKE AD||'%') AND (SOYAD IS NULL OR NVSOYAD LIKE SOYAD||'%')*...............

    The code you have posted has no DYNAMIC SQL in it.... Static SQL inside PL/SQL will bind all the variables for you.
    So what you are saying does not compute.
    What is making you think a 'brand new query' is being parsed for each execution?
    Edited by: Tubby on Nov 8, 2008 4:19 PM

  • "shared pool free memory" include "SHARED_POOL_RESERVED_SIZE" area??

    Hi, all.
    "shared pool free memory" from v$sgastat include "SHARED_POOL_RESERVED_SIZE" ??
    For example,
    select * from v$sgastat
    where pool ='shared pool'
    and name like 'free memory'
    assuming that the result of the above query is about 100Megabytes
    and "SHARED_POOL_RESERVED_SIZE" is 50Megabytes,
    "100 M free memory" in shared pool includes 50M (reserved area)??
    Thanks and Regards.
    Message was edited by:
    user507290

    Shortly after the database starts up, some of the 'shared_pool_reserved_size' will probably be in use, although quite a lot of it may still be free; so you cannot say (directly) how much of the "free memory" belongs in the reserved area and how much comes from the rest of the shared pool.
    However, there is a view called v$shared_pool_reserved that tells you how much of the reserved area is currently free (and gives various other statisics about the pool's use). There are some versions of Oracle where the definition of this view is wrong, though - possibly in the lower 9i versions.
    Regards
    Jonathan Lewis
    http://jonathanlewis.wordpress.com
    http://www.jlcomp.demon.co.uk

  • Shared Pool: KGH No ACCESS Is Very High

    if you run the following query it shows you a very high value for KGH NO ACCESS (around 5GB)
    select * from v$sgastat where pool = 'shared pool' and (name in ('free memory', 'sql area', 'library cache', 'miscellaneous', 'row cache', 'KGH: NO ACCESS') )
    that KGH means?

    Hi,
    As you have sga_target, ASMM is enabled and could be the cause of high KGH No Access. Have a look at
    Common Cause for ORA-4031 in 10gR2, Excess "KGH: NO ACCESS" Memory Allocation [Video] (Doc ID 801787.1)
    Anand

  • Delete a parse statement from shared pool

    Can anybody help me to delete a parse statement from shared pool without affecting other objects ( without using ALTER SYSTEM FLUSH SHARED POOL;). This i am trying in my personal training db and I am using 10g. Thanks in advance for all of your replies.

    Thank you for all your replies.
    I am a newbie to oracle. Just i am playing with usage of bind variables and parameter CURSOR_SHARING .Need to verify when the data is heavly skewed ,sql parsing will occur for the sql statement having bind variables with parameter CURSOR_SHARING=EXACT but not with CURSOR_SHARING=FORCE / SIMILAR .
    But infact i didn't see any sql parsing with parameter value EXACT . thinking of deleting my old parse statement from shared pool and try it again.
    thanks again

  • 100% CPU, wait event : latch shared pool

    I have a store procedure, run in one of database, it hangs in a "create table ... as select ..." statement.
    the wait event is : latch shared pool, and CPU is up to 100%, it has run over few hours and seems hang.
    Same stored procedure run on others enviroment, never seen such problem, even run on the same data size or even much much bigger data size.
    This procedure has been used more than 2 years, never see such problem in any others enviroment. it only happend in this new setup enviroment.
    however, in this enviroment, if I try to reduce data to be very very small, I was able to see procudure complate in 10 sec.
    I suspect parameter, for example, I changed shared_pool_size from 40MB to 150 MB, re-start database and re-run, still see the same problem here.
    Could anybody suggest any thing I can look into?
    Thanks

    jjzz wrote:
    I have a store procedure, run in one of database, it hangs in a "create table ... as select ..." statement.
    the wait event is : latch shared pool, and CPU is up to 100%, it has run over few hours and seems hang.
    If it's running at 100% CPU, it's not waiting.
    Does v$session_wait (or even v$session since you seem to be running 10g) tell you that the session is *"waiting"*, or is it simply noting that your last wait was on the shared pool latch ?
    If the latter, then you probably have some SQL in the procedure that has changed its execution plan to become much more CPU intensive - perhaps because of a small change in the data volume, data distribution, or statistics.
    First step - find out what SQL statements are executing, and see how much work they are doing. You could query v$session for that session a few times and check what the sql_id and sql_child number are, also prev_sql_id and prev_child_number. If these stay constant, one or other may give you the guilty SQL statement. If not check v$open_cursor for the session.
    Regards
    Jonathan Lewis
    http://jonathanlewis.wordpress.com
    http://www.jlcomp.demon.co.uk
    "Science is more than a body of knowledge; it is a way of thinking"
    Carl Sagan

  • Shared pool fragmentation

    Find below a modified version of a script retrieved from Metalink 146599.1 to check for shared pool fragmentation
    I am not sure if it is possible, but is there any way to incorporate into this script a query that will show the effectiveness of using an ALTER SYSTEM FLUSH SHARED_POOL command .
    select bucket, freespace,
    ROUND(ratio_to_report(freespace) over () * 100, 5) AS "Percentage"
    from
    (select '0 (<140)' BUCKET, sum(KSMCHSIZ) freespace
    from x$ksmsp
    where KSMCHSIZ<140
    and KSMCHCLS='free'
    UNION ALL
    select '1 (140-267)' BUCKET, sum(KSMCHSIZ) freespace
    from x$ksmsp
    where KSMCHSIZ between 140 and 267
    and KSMCHCLS='free'
    UNION ALL
    select '2 (268-523)' BUCKET, sum(KSMCHSIZ) freespace
    from x$ksmsp
    where KSMCHSIZ between 268 and 523
    and KSMCHCLS='free'
    UNION ALL
    select '3-5 (524-4107)' BUCKET, sum(KSMCHSIZ) freespace
    from x$ksmsp
    where KSMCHSIZ between 524 and 4107
    and KSMCHCLS='free'
    UNION ALL
    select '6+ (4108+)' BUCKET, sum(KSMCHSIZ) freespace
    from x$ksmsp
    where KSMCHSIZ >= 4108
    and KSMCHCLS='free');

    Running this SQL, flushing the shared pool, and the re-running should show what the difference before and after is - or does this not suffice?
    Flushing the shared pool is also not really addressing the root cause - which most often is non-sharable SQL.
    Thus I'm not exactly sure what you're trying to achieve here. The SQL identifies the symptoms - flushing the shared pool treats those symptoms. For a while.
    Surely you should rather be looking at the shared pool itself to determine what the problem is and try and fix that instead? A db logon trigger for a poorly written app can for example force cursor sharing for all sessions created by that app.

  • Packaged procedures in shared pool?

    I have a question. Maybe someone can help me.
    When I call a standalone stored procedure, this is loaded in the shared pool and it is available for other users too. That's right, I think.
    But what about a packaged procedure? When I call one of the elements declared in the package spec the whole package is loaded in memory. It seems to me that is only for my session. Or is a package, including it's subprograms and global declared variables, also loaded in the shared pool and available for other users, after it is called by a user?

    > It seems to me that is only for my session.
    What test is that based on?
    > Or is a package, including its subprograms and global declared variables, also loaded in the shared pool and available for other users, after it is called by a user?
    Yes.

  • LARGE POOL and RMAN

    Hi,
    Because I use RMAN I decided to configure Large Pool. It is said, that RMAN should use this area if it's defined. But im my system statistics for LargePool are constant - there is always only empty space, no blocks are allocated by RMAN. Could someone tell me what's wrong? Why my RMAN still uses shared pool and no large?
    Regards,
    Kuba

    that was an interesting question, after checking in metalink this seems to be myth that if you configure large_pool rman will use it. (the problem with oracle documentation is it conveniently forgets to qualify the conditions).
    "The LARGE_POOL is only used if I/O Slaves are specified by one or both of the initialization parameters DBWR_IO_SLAVES or BACKUP_TAPE_IO_SLAVES."
    so in your case may be you have not using these parameters, that maybe the reason why RMAN is not using Large_pool.
    check metalink note : 134214.1 for more RMAN myths.
    which leaves us wondering...why can't these information be made available in the public documentation in the form of short notes or caveats???

  • Shared Pool utilisation

    Hello Team:
    I ran a metalink script to report the shared pool utilization recently. I took this output when the database was on peak load.
    SQL> /
    Obj mem: 66435759 bytes (63.36MB)
    Shared sql: 324219036 bytes (309.2MB)
    Cursors: 341207073 bytes (325.4MB)
    Free memory: 67228508 bytes (64.11MB)
    Shared pool utilization (total): 468785754 bytes (447.07MB)
    Shared pool allocation (actual): 754974720bytes (720MB)
    Percentage Utilized: 91%
    does this mean I have to add more space to shared pool. If so what is the threshold value?
    Regards,
    Bala

    Bhawani nandan Prasad - Principal DBA -- See a to z diagnostics about Shared pool
    1. Memory     2
    a. Shared Pool     2
    1. Introduction     2
    2. Architecture     2
    3. Scripts for different DBA tasks:     5
    a.Measure object usage inside the shared pool and Tune shared pool     7
    b.Check reload problem in library cache     12
    c.Find the large queries in the shared pool library cache (using > 4mb each)     13
    d.Find objects that can be considered pining into the shared pool     13
    e.LRU work and objects were loaded and flushed     13
    f.How much are waiting for Library Cache Latch     14
    g.Queries identical but aren’t shared.     14
    h.Get Biggest chunk of free memory.     14
    i.Check the shared pool reserved size status     16
    j.When having multiple subheaps:     16
    k.Check shared pool at first glance quick diagnostics     17
    l.Memory Usage - object list level view     17
    m.Loads Number of times object has been loaded     17
    n.Check number of times and object has been executed     18
    o.Check shared pool in more details     18
    p.Library Cache Statistics     18
    q.Reserve Pool Settings     19
    r.Pinned Objects     19
    s.Finding literal SQL     19
    t.Finding the Library Cache hit ratio     19
    u. Row Cache Misses – Dictionary cache stats     19
    v. Checking hash chain lengths     20
    w. Checking for high version counts     20
    x. Finding statement/s which use lots of shared pool memory     20
    y. Allocations causing shared pool memory to be 'aged' out     21
    z. Issues in various Oracle Releases     21
    4. Terminology     22
    5. Oracle 11g Caching and Pooling – SQL Result Cache     27
    6. References     37
    2. SQL     38
    3. Statistics     38
    4. Wait events     38
    5. Schema     39
    6. General     39
    a. Scripts     39
    1. accept.sql     39
    1. Memory
    a. Shared Pool
    1. Introduction
    Shared pool is used to cache different types of data such as textual and executable forms of PL/SQL blocks and SQL statements, dictionary cache data, and other data in SGA. Additional shared memory needed in the SHARED POOL if using ASM storage. Gathering schema/database stats (table/index stats) makes database query performance better and it reduce utilization of shared pool. Hence, practice to schedule job to gather stats regularly which suites your database performance. If you use shared pool effectively you can reduce resource consumption in at least four ways
    1.     Parse overhead is avoided if the SQL statement is already in the shared pool. This saves CPU resources on the host and elapsed time for the end user.
    2.     Latching resource usage is significantly reduced, which results in greater scalability.
    3.     Shared pool memory requirements are reduced, because all applications use the same pool of SQL statements and dictionary resources.
    4.     I/O resources are saved, because dictionary elements that are in the shared pool do not require disk access.
    This sharable area of memory is managed as a sophisticated cache and heap manager rolled into one. It has 3 fundamental problems to overcome:
    1.     The unit of memory allocation is not a constant - memory allocations from the pool can be anything from a few bytes to many kilobytes
    2.     Not all memory can be 'freed' when a user finishes with it (as is the case in a traditional heap manager) as the aim of the shared pool is to maximize share of information. The information in the memory may be useful to another session - Oracle cannot know in advance if the items will be of any use to anyone else or not.
    3.     There is no disk area to page out to so this is not like a traditional cache where there is a file backing store. Only "rewriteable" information can be discarded from the cache and it has to be re-created when it is next needed.
    Oracle 10g architecture of Shared pool:
    Library Cache     Shared SQL Area (Hash Value, SQL source, Execution plan)
    Data Dictionary Cache
    Enqueues     Fixed Area     Other
    Latches          
    Oracle 11g architecture of Shared pool:
    Library Cache     Shared SQL Area (Hash Value, SQL source, Execution plan)
    Data Dictionary Cache
    Result Cache
    Enqueues     Fixed Area     Other
    Latches          
    1. Library Cache
    Shared Sql Area: contains Parsed SQL and execution Plans for statements already run against the database. This area allows SQL execution plans to be reused by many users.
    Private SQL Area: Private SQL areas are non-shared memory areas assigned to unique user sessions.
    Pl/sql Area: contains the recently executed Procedures, Functions and Packages.
    Control Structures: Common control structure information example Memory for Latches and locks, sequence cache.
    2. Dictionary cache known as the row cache.
    Dictionary cache stores all the metadata info of tables and views in the database, Names and data types of the columns in the database, Object and system privileges of all the Users. Oracle maintains the stats of all the objects in the shared pool, if any of the memory objects are not used from the last 3 seconds, these memory objects will be aged out and will be removed from the cache. All the Shared Pool Structures are maintained by a LRU (least recently Used) algorithm, by which Oracle removes the objects from the shared Pool, until there is enough free space in the shared Pool to keep new Object.
    3. Scripts for different DBA tasks:
    Dictionary Views for shared POOL:
    NON-RAC
    V$DB_CACHE_ADVICE
    V$DB_OBJECT_CACHE
    V$DLM_LATCH
    V$DLM_LOCKS
    V$LATCH
    V$LATCHHOLDER
    V$LATCHNAME
    V$LATCH_CHILDREN
    V$LATCH_MISSES
    V$LATCH_PARENT
    V$LIBRARYCACHE
    V$LOCK
    V$LOCKED_OBJECT
    V$LOCKS_WITH_COLLISIONS
    V$LOCK_ACTIVITY
    V$LOCK_ELEMENT
    V$OPEN_CURSOR
    V$PROCESS
    V$PX_PROCESS
    V$PX_PROCESS_SYSSTAT
    V$PX_SESSION
    V$PX_SESSTAT
    V$ROWCACHE
    V$ROWCACHE_PARENT
    V$ROWCACHE_SUBORDINATE
    V$SESSION
    V$SESSION_CONNECT_INFO
    V$SESSION_CURSOR_CACHE
    V$SESSION_EVENT
    V$SESSION_LONGOPS
    V$SESSION_OBJECT_CACHE
    V$SESSION_WAIT
    V$SESSTAT
    V$SESS_IO
    V$SGA
    V$SGASTAT
    V$SGAINFO
    V$SGA_DYAMIC_COMPONENTS
    V$SGA_DYNAMIC_FREE_MEMORY
    V$SGA_RESIZE_OPS
    V$SGA_CURRENT_RESIZE_OPS
    v$shared_pool_advice
    V_$SHARED_POOL_ADVICE
    V$SHARED_POOL_RESERVED
    V$SHARED_SERVER
    V$SORT_SEGMENT
    V$SORT_USAGE
    V$SQL
    V$SQLAREA
    V$SQLTEXT
    V$SQLTEXT_WITH_NEWLINES
    V$SQL_BIND_DATA
    V$SQL_BIND_METADATA
    V$SQL_CURSOR
    V$SQL_SHARED_CURSOR
    V$SQL_SHARED_MEMORY
    V$STATNAME
    V$SUBCACHE
    V$SYSSTAT
    V$SYSTEM_CURSOR_CACHE
    V$SYSTEM_EVENT
    V$SYSTEM_PARAMETER
    X$KSMSP
    RAC
    GV$LATCH
    GV$LATCHHOLDER
    GV$LATCHNAME
    GV$LATCH_CHILDREN
    GV$LATCH_MISSES
    GV$LATCH_PARENT
    GV$LIBRARYCACHE
    GV$LOCK
    GV$LOCKED_OBJECT
    GV$LOCKS_WITH_COLLISIONS
    GV$LOCK_ACTIVITY
    GV$LOCK_ELEMENT
    GV$PROCESS
    GV$PX_PROCESS
    GV$PX_PROCESS_SYSSTAT
    GV$PX_SESSION
    GV$PX_SESSTAT
    GV$ROWCACHE
    GV$ROWCACHE_PARENT
    GV$ROWCACHE_SUBORDINATE
    GV$SESSION
    GV$SESSION_CONNECT_INFO
    GV$SESSION_CURSOR_CACHE
    GV$SESSION_EVENT
    GV$SESSION_LONGOPS
    GV$SESSION_OBJECT_CACHE
    GV$SESSION_WAIT
    GV$SESSTAT
    GV$SESS_IO
    GV$SGA
    GV$SGASTAT
    gv$shared_pool_advice
    GV$SHARED_POOL_RESERVED
    GV$SHARED_SERVER
    GV$SORT_SEGMENT
    GV$SORT_USAGE
    GV$SQL
    GV$SQLAREA
    GV$SQLTEXT
    GV$SQLTEXT_WITH_NEWLINES
    GV$SQL_BIND_DATA
    GV$SQL_BIND_METADATA
    GV$SQL_CURSOR
    GV$SQL_SHARED_CURSOR
    GV$SQL_SHARED_MEMORY
    GV$STATNAME
    GV$SUBCACHE
    GV$SYSSTAT
    GV$SYSTEM_CURSOR_CACHE
    GV$SYSTEM_EVENT
    GV$SYSTEM_PARAMETER
    GV$WAITSTAT
    GV$_LOCK
    a.Measure object usage inside the shared pool and Tune shared pool
    set pagesize 132
    column owner format a16
    column name format a36
    column sharable_mem format 999,999,999
    column executions format 999,999,999
    prompt
    prompt Memory Usage of Shared Pool Order - Biggest First
    prompt
    column name format 45
    select owner, name||' - '||type name, sharable_mem from v$db_object_cache
    where sharable_mem > 10000
    and type in ('PACKAGE', 'PACKAGE BODY', 'FUNCTION', 'PROCEDURE')
    order by sharable_mem desc
    prompt
    prompt Loads into Shared Pool - Most Loads First
    prompt
    select owner, name||' - '||type name, loads , sharable_mem from v$db_object_cache
    where loads > 3
    and type in ('PACKAGE', 'PACKAGE BODY', 'FUNCTION', 'PROCEDURE')
    order by loads desc
    prompt
    prompt Executions of Objects in the Shared Pool - Most Executions First
    prompt
    select owner, name||' - '||type name, executions from v$db_object_cache
    where executions > 100
    and type in ('PACKAGE', 'PACKAGE BODY', 'FUNCTION', 'PROCEDURE')
    order by executions desc
    select 'If the values for the EXEC and LOADS close increase SHARED_POOL_SIZE!' from dual ;
    set feedback off
    set linesize 80
    set pagesize 52
    clear columns
    clear breaks
    col executions HEADING EXEC
    col sharable_mem heading SHAMEM
    col owner format a8
    col name format a30
    col type format a12
    set numwidth 8
    ttitle center 'Data Base Objects Owned by All Users Statistics' skip 2
    select name, type, sharable_mem, loads, executions, pins
    from sys.v_$db_object_cache ;
    b.Check reload problem in library cache
    select namespace, pins, reloads from v$librarycache;
    show parameters shared_pool
    select bytes/1024/1024 from v$sgastat where pool='shared pool' and name='free memory';
    c.Find the large queries in the shared pool library cache (using > 4mb each)
    SELECT sql_text "Stmt", count(*), sum(sharable_mem) "Mem",
    sum(users_opening) "Open", sum(executions) "Exec"
    FROM v$sql GROUP BY sql_text HAVING sum(sharable_mem) > 4096000;
    d.Find objects that can be considered pining into the shared pool
    column name format a40
    column owner format a15
    select owner, name, executions, locks, pins, loads, kept from v$db_object_cache where loads > 10;
    create temp table and insert records of candidates to be pinned.
    CREATE TABLE LRU_TMP AS SELECT * FROM X$KSMLRU;
    INSERT INTO LRU_TMP SELECT * FROM X$KSMLRU;
    Use the LRU_TMP table for analysis.
    SELECT USERNAME, KSMLRCOM, KSMLRHON, KSMLRNUM, KSMLRSIZ, SQL_TEXT
    FROM V$SQLAREA A, LRU_TMP K, V$SESSION S WHERE KSMLRSIZ > 3000
    AND A.ADDRESS=S.SQL_ADDRESS AND A.HASH_VALUE = S.SQL_HASH_VALUE
    AND SADDR=KSMLRSES;
    You can see the candidates to pin from the query below
    COL STORED_OBJECT FORMAT A40;
    COL SQ_EXECUTIONS FORMAT 999,999;
    SELECT /*+ ORDERED USE_HASH(D) USE_HASH(C) */ O.KGLNAOWN||’.'||O.KGLNAOBJ STORED_OBJECT, SUM(C.KGLHDEXC) SQL_EXECUTIONS
    FROM SYS.X$KGLOB O, SYS.X$KGLRD D, SYS.X$KGLCURSOR C
    WHERE
    O.INST_ID = USERENV(’INSTANCE’) AND
    D.INST_ID = USERENV(’INSTANCE’) AND
    C.INST_ID = USERENV(’INSTANCE’) AND
    O.KGLOBTYP IN (7, 8, 9, 11, 12) AND
    D.KGLHDCDR = O.KGLHDADR AND
    C.KGLHDPAR = D.KGLRDHDL
    GROUP BY O.KGLNAOWN, O.KGLNAOBJ
    HAVING SUM(C.KGLHDEXC) > 0
    ORDER BY 2 DESC;
    How to pin object
    EXECUTE SYS.DBMS_SHARED_POOL.SIZES(150);
    EXECUTE SYS.DBMS_SHARED_POOL.KEEP('SYS.STANDARD');
    EXECUTE SYS.DBMS_SHARED_POOL.UNKEEP('SYS.STANDARD');
    e.LRU work and objects were loaded and flushed
    LRU work in the shared pool KSMLRNUM stores the number of objects that were flushed to load the large object. KSMLRISZ stores the size of the object that was loaded (contiguous memory allocated)
    column ksmlrcom format a20
    column username format a5
    select username,sid,KSMLRCOM,KSMLRSIZ,KSMLRNUM, KSMLRHON, KSMLROHV, KSMLRSES from x$ksmlru , v$session where KSMLRSES=SADDR and KSMLRNUM >2 ;
    f.How much are waiting for Library Cache Latch
    select count(*),event from v$session_wait where event not like '%SQL%' and event not like '%ipc%' and event not like '%timer%' GROUP BY EVENT;
    select count(*),wait_time from v$session_wait where event='latch free' and p2=106 group by wait_time;
    select sid,wait_time,seconds_in_wait from v$session_wait where event='latch free' and p2=106 and WAIT_TIME>1;
    g.Queries identical but aren’t shared.
    SELECT address, hash_value, version_count , users_opening , users_executing,
    substr(sql_text,1,240) "SQL" FROM v$sqlarea WHERE version_count > 10;
    h.Get Biggest chunk of free memory.
    select sysdate, decode( sign(ksmchsiz - 812), -1, (ksmchsiz - 16) / 4,
    decode(sign(ksmchsiz - 4012),-1, trunc((ksmchsiz + 11924) / 64),
    decode(sign(ksmchsiz - 65548), -1, trunc(1/log(ksmchsiz - 11, 2)) + 238,254))) bucket,
    sum(ksmchsiz) free_space, count(*) free_chunks, trunc(avg(ksmchsiz)) average_size,
    max(ksmchsiz) biggest from x$ksmsp
    where inst_id = userenv('Instance') and ksmchcls = 'free' group by
    decode(sign(ksmchsiz - 812),-1, (ksmchsiz - 16) / 4,
    decode(sign(ksmchsiz - 4012),-1, trunc((ksmchsiz + 11924) / 64),
    decode(sign(ksmchsiz - 65548),-1, trunc(1/log(ksmchsiz - 11, 2)) + 238,254 ))) ;
    SELECT KSMCHCLS CLASS, COUNT(KSMCHCLS) NUM, SUM(KSMCHSIZ) SIZ,
    To_char( ((SUM(KSMCHSIZ)/COUNT(KSMCHCLS)/1024)),’999,999.00′)||’k’ “AVG SIZE”
    FROM X$KSMSP GROUP BY KSMCHCLS;
    CLASS     NUM     SIZ     AVG SIZE
    freeabl     19010     34519404     1.77k
    recr     23581     24967956     1.03k
    R-freea     68     1632     .02k
    perm     22     39801268     1,766.75k
    R-free     34     7238192     207.90k
    free     2389     36075980     14.75k
    Watch for trends using these guidelines:
    a) if ‘free’ memory is low (less than 5mb or so) you may need to increase the shared_pool_size and shared_pool_reserved_size. You should expect ‘free’ memory to increase and decrease over time. Seeing trends where ‘free’ memory decreases consistently is not necessarily a problem, but seeing consistent spikes up and down could be a problem.
    b) if ‘freeable’ or ‘perm’ memory continually grows then it is possible you are seeing a memory bug.
    c) if ‘freeabl’ and ‘recr’ memory classes are always huge, this indicates that you have a lot of cursor info stored that is not releasing.
    d) if ‘free’ memory is huge but you are still getting 4031 errors, the problem is likely reloads and invalids in the library cache causing fragmentation.
    -Note says that this query can hang database on HP platforms
    See the shared pool parameters
    column name format a30
    select name,value from v$parameter where name like '%shared_pool%' ;
    select x.ksppinm, y.ksppstvl from x$ksppi x , x$ksppcv y where x.indx = y.indx and lower(x.ksppinm) like '%spin%';
    SELECT count(*) FROM v$latch_children WHERE NAME = 'library cache';
    Shrinking and growing operations from V$SGA_RESIZE_OPS dynamic view:
    select to_char(end_time, ‘dd-Mon-yyyy hh24:mi’) end, oper_type, initial_size, target_size, final_size from V$SGA_RESIZE_OPS where component=’shared pool’ order by end;
    #shared_pool_summary.sql -get an overview of chunks in the shared pool
    select
    ksmchcom contents,
    count(*) chunks,
    sum(decode(ksmchcls, 'recr', ksmchsiz)) recreatable,
    sum(decode(ksmchcls, 'freeabl', ksmchsiz)) freeable,
    sum(ksmchsiz) total
    from
    sys.x_$ksmsp
    where
    inst_id = userenv('Instance') and
    ksmchcls not like 'R%'
    group by
    ksmchcom
    #reserved_pool_summary.sql - get an overview of chunks in the reserved pool
    select
    ksmchcom contents,
    count(*) chunks,
    sum(decode(ksmchcls, 'R-recr', ksmchsiz)) recreatable,
    sum(decode(ksmchcls, 'R-freea', ksmchsiz)) freeable,
    sum(ksmchsiz) total
    from
    sys.x_$ksmspr
    where
    inst_id = userenv('Instance')
    group by
    ksmchcom
    #save_sqlplus_settings.sql -reset sqlplus settings
    set termout off
    store set sqlplus_settings replace
    clear breaks
    clear columns
    clear computes
    set feedback off
    set verify off
    set termout on
    set define "&"
    #restore_sqlplus_settings.sql -reset sqlplus settings
    set termout off
    @sqlplus_settings
    clear breaks
    clear columns
    clear computes
    set termout on
    i.Check the shared pool reserved size status
    SELECT free_space, avg_free_size, used_space, avg_used_size, REQUEST_MISSES, request_failures, last_miss_size FROM v$shared_pool_reserved;
    An ORA-04031 error referencing large failed requests, indicates the Reserved Area is too fragmented. The reserved pool is small when: REQUEST_FAILURES > 0 (and increasing), The DBA should Increase shared_pool_reserved_size and shared_pool_size together. It is possible that too much memory has been allocated to the reserved list. The DBA should Decrease shared_pool_reserved_size, If: REQUEST_MISS = 0 or not increasing
    FREE_MEMORY = > 50% of shared_pool_reserved_size minimum
    col free_space for 999,999,999,999 head “TOTAL FREE”
    col avg_free_size for 999,999,999,999 head “AVERAGE|CHUNK SIZE
    col free_count for 999,999,999,999 head “COUNT”
    col request_misses for 999,999,999,999 head “REQUEST|MISSES
    col request_failures for 999,999,999,999 head “REQUEST|FAILURES”
    col max_free_size for 999,999,999,999 head “LARGEST CHUNK”
    select free_space, avg_free_size, free_count, max_free_size, request_misses, request_failures from v$shared_pool_reserved;
    TOTAL FREE     AVERAGE
    CHUNK SIZE     COUNT     LARGEST CHUNK     REQUEST
    MISSES     REQUEST
    FAILURES
    7,238,192     212,888     34     212,888     0     0
    You should also use hidden and unsupported parameter “_shared_pool_reserved_pct” to control reserved pool. This parameter controls the allocated percentage of shared pool for reserved pool. By default it is %5 of the shared pool and if you use ASMM for memory management you can set this value higher like 10 to allocate reserved pool dynamically. When you set the parameter you will see the shared_pool_reserved_size parameter will be adjusted to the new setting. The parameter can not be modified when instance is started. You can use the query below to see the current value
    select a.ksppinm “Parameter”, b.ksppstvl “Session Value”, c.ksppstvl “Instance Value” from sys.x$ksppi a, sys.x$ksppcv b, sys.x$ksppsv c where a.indx = b.indx and a.indx = c.indx and a.ksppinm = ‘_shared_pool_reserved_pct’;
    Parameter     Session Value     Instance Value
    sharedpool_reserved_pct     10     10
    j.When having multiple subheaps:
    select KSMCHIDX, ksmchcom ChunkComment,
    decode(round(ksmchsiz/1000),0,'0-1K', 1,'1-2K', 2,'2-3K', 3,'3-4K',4,'4-5K',5,'5-6k',6,'6-7k',7,'7-8k',8,'8-9k', 9,'9-10k', '> 10K'), count(*), ksmchcls Status, sum(ksmchsiz) Bytes
    from x$ksmsp where KSMCHCOM = 'free memory' group by KSMCHIDX,ksmchcom, ksmchcls, decode(round(ksmchsiz/1000),0,'0-1K', 1,'1-2K', 2,'2-3K', 3,'3-4K',4,'4-5K',5,'5-6k',6,'6-7k',7,'7-8k',8,'8-9k', 9,'9-10k','> 10K');
    SubPool     SGA_HEAP     CHUNKCOMMENT     size     COUNT(*)     STATUS     BYTES
    1     sga heap(1,0)     free memory     > 10K     34     R-free     7238192
    1     sga heap(1,0)     free memory     3-4K     2     free     6284
    1     sga heap(1,0)     free memory     > 10K     241     free     35707400
    1     sga heap(1,0)     free memory     8-9k     1     free     7712
    1     sga heap(1,0)     free memory     2-3K     4     free     6752
    1     sga heap(1,0)     free memory     0-1K     2090     free     133288
    1     sga heap(1,0)     free memory     9-10k     21     free     188676
    1     sga heap(1,0)     free memory     1-2K     30     free     25868
    If you see lack of large chunks it is possible that you can face with ORA-04031 in near future.
    k.Check shared pool at first glance quick diagnostics
    select 'You may need to increase the SHARED_POOL_RESERVED_SIZE' Description, 'Request Failures = '||REQUEST_FAILURES Logic
    from      v$shared_pool_reserved where      REQUEST_FAILURES > 0
    and      0 != (select      to_number(VALUE) from      v$parameter
    where      NAME = 'shared_pool_reserved_size')
    union
    select 'You may be able to decrease the SHARED_POOL_RESERVED_SIZE' Description,'Request Failures = '||REQUEST_FAILURES Logic
    from      v$shared_pool_reserved where      REQUEST_FAILURES < 5
    and      0 != (select      to_number(VALUE) from      v$parameter
         where      NAME = 'shared_pool_reserved_size')
    l.Memory Usage - object list level view
    •     Owner - Owner of the object
    •     Object - Name/namespace of the object
    •     Sharable Memory - Amount of sharable memory in the shared pool consumed by the object
    select OWNER, NAME||' - '||TYPE object,SHARABLE_MEM
    from      v$db_object_cache where SHARABLE_MEM > 10000
    and     type in ('PACKAGE','PACKAGE BODY','FUNCTION','PROCEDURE')
    order by owner asc ,SHARABLE_MEM desc
    SELECT * FROM (SELECT ROW_NUMBER () over (PARTITION BY NAMESPACE ORDER BY SHARABLE_MEM DESC) ROW_within , NAMESPACE, SHARABLE_MEM, SUBSTR(NAME,1,40) NAME FROM V$DB_OBJECT_CACHE ORDER BY SHARABLE_MEM DESC) WHERE ROW_WITHIN <= 2 ORDER BY NAMESPACE, ROW_WITHIN;
    ROW_WITHIN NAMESPACE SHARABLE_MEM NAME
    1 CLUSTER 2794 C_OBJ#_INTCOL#
    2 CLUSTER 1684 SMON_SCN_TO_TIME
    1 RSRCPLAN 5117 SYS_GROUP

  • Oracle shared pool fragmentation

    We are running Identity Manager 7.0 using an Oracle database repository. We've been seeing shared pool fragmentation in the database resulting in various java.io.IOException: ORA-00600: internal error code messages when using bulk actions to create and remove accounts. Flushing the oracle shared pool is the only way we've found to clear these errors. Has anyone run into similar problems and found any solution other than increasing the size of the shared pool and issuing an 'alter system flush shared_pool' command periodically?

    Scott Heaton wrote:
    We have an application running WebLogic 5.1 against an Oracle 8.1.7.4 database
    and are seeing very rapid fragmentation of the Oracle database shared pool, ultimately
    resulting in an ORA-04031 error (unable to allocate xxxx bytes of shared memory).
    I'm curious if there are are known issues with WebLogic 5.1 regarding the database
    shared pool, retaining a handle to SQL statements issues (so that they cannot
    be released), or anything similar? Thanks.What sp level of 5.1? We are caching prepared statements in the later versions,
    so for every pooled connection there will be up to 10 (or whatever cache size
    you set) prepared statements cached for re-use, and each of these will retain
    a DBMS-side cursor. I am not an oracle DBA so I don't know if this relates directly
    to the shared pool fragmentation...
    Joe

  • Shared pool cluttered ... ?

    Hi,
    Notes from Sr.DBA:
    Yesterday evening , production operator called me to inform that one of the regular processing was hanging on webash server.
    When I analyzed , found that shared pool is totally cluttered and tens of thousands of same program scripts lying in shared pool. I cleared the shared pool and restarted the regular processing.
    Please let me know how to find the shared pool is cluttered and tens of thousands of same program scripts lying in shared pool ? Thanks.

    Your solution is in the first answer of Tom's link Below. This normally happens when you are not using bind variables which increasing your parsing time. This is a very good link. I had used this link to resolve same kind of problem. If it turns out to be bind variables issue, you will need to fix the application code and that will be the right fix. Check this link.
    The output of the function in this link will show you all the identical statements in the shared pool after all the literals have been removed.
    http://asktom.oracle.com/pls/asktom/f?p=100:11:::::P11_QUESTION_ID:1163635055580
    You have so many unanswered questions in your profile. Please mark this question answered if you have your question answered to keep your forum clean.

  • Is connection pooling and sharing available on Oracle 9i RDBMS ?

    Hello,
    I would like to connect from oracle to sql server through db link and ODBC (Heterogenous connectivity). But every session in oracle launch session in sql server. Is it possible to have connection pooling and sharing from Oracle RDBMS level ? I need one solution : when (for example) i run 100 sessions in Oracle i would like to see 10 sessions on sql server. I would like remain 90 sessions from oracle to be queued.
    I would mention that i was using Heterogenous connectivity with multithreading agent (agtctl) without success.
    appreciate any help :-)

    There are two concepts you could evaluate, but they are mainly used for connections to the database, not to sqlserver, but if you can make them work with heterogeneous connectivity this could help:
    Connection Pooling. When many sessions are connecting to the same database, it could be that some of them remain idle. Oracle can detect them and timed them out letting another session to enter into the database, letting the idle session remain open without closing its session. This is configured by means of the shared server architecture.
    Session Multiplexing. Session multiplexing allows the same bandwidth to be used by many sessions at the same time, this enables the server to use fewer network connection endpoints for incoming request. In order for you to configure session multiplexing you have to configure connection manager.
    Ref. Oracle® Database Net Services Administrator's Guide
    10g Release 2 (10.2)
    Part Number B14212-02
    ~ Madrid
    http://hrivera99.blogspot.com/

  • How to set the correct shared pool size and db_buffer_cache using awr

    Hi All,
    I want to how to set the correct size for shared_pool_size and db_cache_size using shared pool advisory and buffer pool advisory of awr report. I have paste the shared and buffer pool advisory of awr report.
    Shared Pool Advisory
    * SP: Shared Pool Est LC: Estimated Library Cache Factr: Factor
    * Note there is often a 1:Many correlation between a single logical object in the Library Cache, and the physical number of memory objects associated with it. Therefore comparing the number of Lib Cache objects (e.g. in v$librarycache), with the number of Lib Cache Memory Objects is invalid.
    Shared Pool Size(M)     SP Size Factr     Est LC Size (M)     Est LC Mem Obj     Est LC Time Saved (s)     Est LC Time Saved Factr     Est LC Load Time (s)     Est LC Load Time Factr     Est LC Mem Obj Hits (K)
    4,096     1.00     471     25,153     184,206     1.00     149     1.00     9,069
    4,736     1.16     511     27,328     184,206     1.00     149     1.00     9,766
    5,248     1.28     511     27,346     184,206     1.00     149     1.00     9,766
    5,760     1.41     511     27,346     184,206     1.00     149     1.00     9,766
    6,272     1.53     511     27,346     184,206     1.00     149     1.00     9,766
    6,784     1.66     511     27,346     184,206     1.00     149     1.00     9,766
    7,296     1.78     511     27,346     184,206     1.00     149     1.00     9,766
    7,808     1.91     511     27,346     184,206     1.00     149     1.00     9,766
    8,320     2.03     511     27,346     184,206     1.00     149     1.00     9,766
    Buffer Pool Advisory
    * Only rows with estimated physical reads >0 are displayed
    * ordered by Block Size, Buffers For Estimate
    P     Size for Est (M)     Size Factor     Buffers (thousands)     Est Phys Read Factor     Estimated Phys Reads (thousands)     Est Phys Read Time     Est %DBtime for Rds
    D     4,096     0.10     485     1.02     1,002     1     0.00
    D     8,192     0.20     970     1.00     987     1     0.00
    D     12,288     0.30     1,454     1.00     987     1     0.00
    D     16,384     0.40     1,939     1.00     987     1     0.00
    D     20,480     0.50     2,424     1.00     987     1     0.00
    D     24,576     0.60     2,909     1.00     987     1     0.00
    D     28,672     0.70     3,394     1.00     987     1     0.00
    D     32,768     0.80     3,878     1.00     987     1     0.00
    D     36,864     0.90     4,363     1.00     987     1     0.00
    D     40,960     1.00     4,848     1.00     987     1     0.00
    D     45,056     1.10     5,333     1.00     987     1     0.00
    D     49,152     1.20     5,818     1.00     987     1     0.00
    D     53,248     1.30     6,302     1.00     987     1     0.00
    D     57,344     1.40     6,787     1.00     987     1     0.00
    D     61,440     1.50     7,272     1.00     987     1     0.00
    D     65,536     1.60     7,757     1.00     987     1     0.00
    D     69,632     1.70     8,242     1.00     987     1     0.00
    D     73,728     1.80     8,726     1.00     987     1     0.00
    D     77,824     1.90     9,211     1.00     987     1     0.00
    D     81,920     2.00     9,696     1.00     987     1     0.00
    My shared pool size is 4gb and db_cache_size is 40Gb.
    Please help me in configuring the correct size for this.
    Thanks and Regards,

    Hi ,
    Actually batch load is taking too much time.
    Please find below the 1 hr awr report
         Snap Id     Snap Time     Sessions     Cursors/Session
    Begin Snap:     6557     27-Nov-11 16:00:06     126     1.3
    End Snap:     6558     27-Nov-11 17:00:17     130     1.6
    Elapsed:          60.17 (mins)          
    DB Time:          34.00 (mins)          
    Report Summary
    Cache Sizes
         Begin     End          
    Buffer Cache:     40,960M     40,960M     Std Block Size:     8K
    Shared Pool Size:     4,096M     4,096M     Log Buffer:     25,908K
    Load Profile
         Per Second     Per Transaction     Per Exec     Per Call
    DB Time(s):     0.6     1.4     0.00     0.07
    DB CPU(s):     0.5     1.2     0.00     0.06
    Redo size:     281,296.9     698,483.4          
    Logical reads:     20,545.6     51,016.4          
    Block changes:     1,879.5     4,667.0          
    Physical reads:     123.7     307.2          
    Physical writes:     66.4     164.8          
    User calls:     8.2     20.4          
    Parses:     309.4     768.4          
    Hard parses:     8.5     21.2          
    W/A MB processed:     1.7     4.3          
    Logons:     0.7     1.6          
    Executes:     1,235.9     3,068.7          
    Rollbacks:     0.0     0.0          
    Transactions:     0.4               
    Instance Efficiency Percentages (Target 100%)
    Buffer Nowait %:     100.00     Redo NoWait %:     100.00
    Buffer Hit %:     99.66     In-memory Sort %:     100.00
    Library Hit %:     99.19     Soft Parse %:     97.25
    Execute to Parse %:     74.96     Latch Hit %:     99.97
    Parse CPU to Parse Elapsd %:     92.41     % Non-Parse CPU:     98.65
    Shared Pool Statistics
         Begin     End
    Memory Usage %:     80.33     82.01
    % SQL with executions>1:     90.90     86.48
    % Memory for SQL w/exec>1:     90.10     86.89
    Top 5 Timed Foreground Events
    Event     Waits     Time(s)     Avg wait (ms)     % DB time     Wait Class
    DB CPU          1,789          87.72     
    db file sequential read     27,531     50     2     2.45     User I/O
    db file scattered read     26,322     30     1     1.47     User I/O
    row cache lock     1,798     20     11     0.96     Concurrency
    OJVM: Generic     36     15     421     0.74     Other
    Host CPU (CPUs: 24 Cores: 12 Sockets: )
    Load Average Begin     Load Average End     %User     %System     %WIO     %Idle
    0.58     1.50     2.8     0.7     0.1     96.6
    Instance CPU
    %Total CPU     %Busy CPU     %DB time waiting for CPU (Resource Manager)
    2.2     63.6     0.0
    Memory Statistics
         Begin     End
    Host Mem (MB):     131,072.0     131,072.0
    SGA use (MB):     50,971.4     50,971.4
    PGA use (MB):     545.5     1,066.3
    % Host Mem used for SGA+PGA:     39.30     39.70
    RAC Statistics
         Begin     End
    Number of Instances:     2     2
    Global Cache Load Profile
         Per Second     Per Transaction
    Global Cache blocks received:     3.09     7.68
    Global Cache blocks served:     1.86     4.62
    GCS/GES messages received:     78.64     195.27
    GCS/GES messages sent:     53.82     133.65
    DBWR Fusion writes:     0.52     1.30
    Estd Interconnect traffic (KB)     65.50     
    Global Cache Efficiency Percentages (Target local+remote 100%)
    Buffer access - local cache %:     99.65
    Buffer access - remote cache %:     0.02
    Buffer access - disk %:     0.34
    Global Cache and Enqueue Services - Workload Characteristics
    Avg global enqueue get time (ms):     0.0
    Avg global cache cr block receive time (ms):     1.7
    Avg global cache current block receive time (ms):     1.0
    Avg global cache cr block build time (ms):     0.0
    Avg global cache cr block send time (ms):     0.0
    Global cache log flushes for cr blocks served %:     1.4
    Avg global cache cr block flush time (ms):     0.9
    Avg global cache current block pin time (ms):     0.0
    Avg global cache current block send time (ms):     0.0
    Global cache log flushes for current blocks served %:     0.1
    Avg global cache current block flush time (ms):     0.0
    Global Cache and Enqueue Services - Messaging Statistics
    Avg message sent queue time (ms):     0.0
    Avg message sent queue time on ksxp (ms):     0.4
    Avg message received queue time (ms):     0.5
    Avg GCS message process time (ms):     0.0
    Avg GES message process time (ms):     0.0
    % of direct sent messages:     79.13
    % of indirect sent messages:     17.10
    % of flow controlled messages:     3.77
    Cluster Interconnect
         Begin      End
    Interface     IP Address     Pub     Source     IP     Pub     Src
    en9     10.51.10.61     N     Oracle Cluster Repository               
    Main Report
    * Report Summary
    * Wait Events Statistics
    * SQL Statistics
    * Instance Activity Statistics
    * IO Stats
    * Buffer Pool Statistics
    * Advisory Statistics
    * Wait Statistics
    * Undo Statistics
    * Latch Statistics
    * Segment Statistics
    * Dictionary Cache Statistics
    * Library Cache Statistics
    * Memory Statistics
    * Streams Statistics
    * Resource Limit Statistics
    * Shared Server Statistics
    * init.ora Parameters
    More RAC Statistics
    * RAC Report Summary
    * Global Messaging Statistics
    * Global CR Served Stats
    * Global CURRENT Served Stats
    * Global Cache Transfer Stats
    * Interconnect Stats
    * Dynamic Remastering Statistics
    Back to Top
    Statistic Name     Time (s)     % of DB Time
    sql execute elapsed time     1,925.20     94.38
    DB CPU     1,789.38     87.72
    connection management call elapsed time     99.65     4.89
    PL/SQL execution elapsed time     89.81     4.40
    parse time elapsed     46.32     2.27
    hard parse elapsed time     25.01     1.23
    Java execution elapsed time     21.24     1.04
    PL/SQL compilation elapsed time     11.92     0.58
    failed parse elapsed time     9.37     0.46
    hard parse (sharing criteria) elapsed time     8.71     0.43
    sequence load elapsed time     0.06     0.00
    repeated bind elapsed time     0.02     0.00
    hard parse (bind mismatch) elapsed time     0.01     0.00
    DB time     2,039.77     
    background elapsed time     122.00     
    background cpu time     113.42     
    Statistic     Value     End Value
    NUM_LCPUS     0     
    NUM_VCPUS     0     
    AVG_BUSY_TIME     12,339     
    AVG_IDLE_TIME     348,838     
    AVG_IOWAIT_TIME     221     
    AVG_SYS_TIME     2,274     
    AVG_USER_TIME     9,944     
    BUSY_TIME     299,090     
    IDLE_TIME     8,375,051     
    IOWAIT_TIME     6,820     
    SYS_TIME     57,512     
    USER_TIME     241,578     
    LOAD     1     2
    OS_CPU_WAIT_TIME     312,200     
    PHYSICAL_MEMORY_BYTES     137,438,953,472     
    NUM_CPUS     24     
    NUM_CPU_CORES     12     
    GLOBAL_RECEIVE_SIZE_MAX     1,310,720     
    GLOBAL_SEND_SIZE_MAX     1,310,720     
    TCP_RECEIVE_SIZE_DEFAULT     16,384     
    TCP_RECEIVE_SIZE_MAX     9,223,372,036,854,775,807     
    TCP_RECEIVE_SIZE_MIN     4,096     
    TCP_SEND_SIZE_DEFAULT     16,384     
    TCP_SEND_SIZE_MAX     9,223,372,036,854,775,807     
    TCP_SEND_SIZE_MIN     4,096     
    Back to Wait Events Statistics
    Back to Top
    Operating System Statistics - Detail
    Snap Time     Load     %busy     %user     %sys     %idle     %iowait
    27-Nov 16:00:06     0.58                         
    27-Nov 17:00:17     1.50     3.45     2.79     0.66     96.55     0.08
    Back to Wait Events Statistics
    Back to Top
    Foreground Wait Class
    * s - second, ms - millisecond - 1000th of a second
    * ordered by wait time desc, waits desc
    * %Timeouts: value of 0 indicates value was < .5%. Value of null is truly 0
    * Captured Time accounts for 95.7% of Total DB time 2,039.77 (s)
    * Total FG Wait Time: 163.14 (s) DB CPU time: 1,789.38 (s)
    Wait Class     Waits     %Time -outs     Total Wait Time (s)     Avg wait (ms)     %DB time
    DB CPU               1,789          87.72
    User I/O     61,229     0     92     1     4.49
    Other     102,743     40     31     0     1.50
    Concurrency     3,169     10     24     7     1.16
    Cluster     58,920     0     11     0     0.52
    System I/O     45,407     0     6     0     0.29
    Configuration     107     7     1     5     0.03
    Commit     383     0     0     1     0.01
    Network     15,275     0     0     0     0.00
    Application     52     8     0     0     0.00
    Back to Wait Events Statistics
    Back to Top
    Foreground Wait Events
    * s - second, ms - millisecond - 1000th of a second
    * Only events with Total Wait Time (s) >= .001 are shown
    * ordered by wait time desc, waits desc (idle events last)
    * %Timeouts: value of 0 indicates value was < .5%. Value of null is truly 0
    Event     Waits     %Time -outs     Total Wait Time (s)     Avg wait (ms)     Waits /txn     % DB time
    db file sequential read     27,531     0     50     2     18.93     2.45
    db file scattered read     26,322     0     30     1     18.10     1.47
    row cache lock     1,798     0     20     11     1.24     0.96
    OJVM: Generic     36     42     15     421     0.02     0.74
    db file parallel read     394     0     7     19     0.27     0.36
    control file sequential read     22,248     0     6     0     15.30     0.28
    reliable message     4,439     0     4     1     3.05     0.18
    gc current grant busy     7,597     0     3     0     5.22     0.16
    PX Deq: Slave Session Stats     2,661     0     3     1     1.83     0.16
    DFS lock handle     3,208     0     3     1     2.21     0.16
    direct path write temp     4,842     0     3     1     3.33     0.15
    library cache load lock     39     0     3     72     0.03     0.14
    gc cr multi block request     37,008     0     3     0     25.45     0.14
    IPC send completion sync     5,451     0     2     0     3.75     0.10
    gc cr block 2-way     4,669     0     2     0     3.21     0.09
    enq: PS - contention     3,183     33     1     0     2.19     0.06
    gc cr grant 2-way     5,151     0     1     0     3.54     0.06
    direct path read temp     1,722     0     1     1     1.18     0.05
    gc current block 2-way     1,807     0     1     0     1.24     0.03
    os thread startup     6     0     1     108     0.00     0.03
    name-service call wait     12     0     1     47     0.01     0.03
    PX Deq: Signal ACK RSG     2,046     50     0     0     1.41     0.02
    log file switch completion     3     0     0     149     0.00     0.02
    rdbms ipc reply     3,610     0     0     0     2.48     0.02
    gc current grant 2-way     1,432     0     0     0     0.98     0.02
    library cache pin     903     32     0     0     0.62     0.02
    PX Deq: reap credit     35,815     100     0     0     24.63     0.01
    log file sync     383     0     0     1     0.26     0.01
    Disk file operations I/O     405     0     0     0     0.28     0.01
    library cache lock     418     3     0     0     0.29     0.01
    kfk: async disk IO     23,159     0     0     0     15.93     0.01
    gc current block busy     4     0     0     35     0.00     0.01
    gc current multi block request     1,206     0     0     0     0.83     0.01
    ges message buffer allocation     38,526     0     0     0     26.50     0.00
    enq: FB - contention     131     0     0     0     0.09     0.00
    undo segment extension     8     100     0     6     0.01     0.00
    CSS initialization     8     0     0     6     0.01     0.00
    SQL*Net message to client     14,600     0     0     0     10.04     0.00
    enq: HW - contention     96     0     0     0     0.07     0.00
    CSS operation: action     8     0     0     4     0.01     0.00
    gc cr block busy     33     0     0     1     0.02     0.00
    latch free     30     0     0     1     0.02     0.00
    enq: TM - contention     49     6     0     0     0.03     0.00
    enq: JQ - contention     19     100     0     1     0.01     0.00
    SQL*Net more data to client     666     0     0     0     0.46     0.00
    asynch descriptor resize     3,179     100     0     0     2.19     0.00
    latch: shared pool     3     0     0     3     0.00     0.00
    CSS operation: query     24     0     0     0     0.02     0.00
    PX Deq: Signal ACK EXT     72     0     0     0     0.05     0.00
    KJC: Wait for msg sends to complete     269     0     0     0     0.19     0.00
    latch: object queue header operation     4     0     0     1     0.00     0.00
    gc cr block congested     5     0     0     0     0.00     0.00
    utl_file I/O     11     0     0     0     0.01     0.00
    enq: TO - contention     3     33     0     0     0.00     0.00
    SQL*Net message from client     14,600     0     219,478     15033     10.04     
    jobq slave wait     7,726     100     3,856     499     5.31     
    PX Deq: Execution Msg     10,556     19     50     5     7.26     
    PX Deq: Execute Reply     2,946     31     27     9     2.03     
    PX Deq: Parse Reply     3,157     35     3     1     2.17     
    PX Deq: Join ACK     2,976     28     2     1     2.05     
    PX Deq Credit: send blkd     7     14     0     4     0.00     
    Back to Wait Events Statistics
    Back to Top
    Background Wait Events
    * ordered by wait time desc, waits desc (idle events last)
    * Only events with Total Wait Time (s) >= .001 are shown
    * %Timeouts: value of 0 indicates value was < .5%. Value of null is truly 0
    Event     Waits     %Time -outs     Total Wait Time (s)     Avg wait (ms)     Waits /txn     % bg time
    os thread startup     140     0     13     90     0.10     10.35
    db file parallel write     8,233     0     6     1     5.66     5.08
    log file parallel write     3,906     0     6     1     2.69     4.62
    log file sequential read     350     0     5     16     0.24     4.49
    control file sequential read     13,737     0     5     0     9.45     3.72
    DFS lock handle     2,990     27     2     1     2.06     1.43
    db file sequential read     921     0     2     2     0.63     1.39
    SQL*Net break/reset to client     18     0     1     81     0.01     1.19
    control file parallel write     2,455     0     1     1     1.69     1.12
    ges lms sync during dynamic remastering and reconfig     24     100     1     50     0.02     0.98
    library cache load lock     35     0     1     24     0.02     0.68
    ASM file metadata operation     3,483     0     1     0     2.40     0.65
    enq: CO - master slave det     1,203     100     1     0     0.83     0.46
    kjbdrmcvtq lmon drm quiesce: ping completion     9     0     1     62     0.01     0.46
    enq: WF - contention     11     0     0     35     0.01     0.31
    CGS wait for IPC msg     32,702     100     0     0     22.49     0.19
    gc object scan     28,788     100     0     0     19.80     0.15
    row cache lock     535     0     0     0     0.37     0.14
    library cache pin     370     55     0     0     0.25     0.12
    ksxr poll remote instances     19,119     100     0     0     13.15     0.11
    name-service call wait     6     0     0     19     0.00     0.10
    gc current block 2-way     304     0     0     0     0.21     0.09
    gc cr block 2-way     267     0     0     0     0.18     0.08
    gc cr grant 2-way     355     0     0     0     0.24     0.08
    ges LMON to get to FTDONE     3     100     0     24     0.00     0.06
    enq: CF - contention     145     76     0     0     0.10     0.05
    PX Deq: reap credit     8,842     100     0     0     6.08     0.05
    reliable message     126     0     0     0     0.09     0.05
    db file scattered read     19     0     0     3     0.01     0.05
    library cache lock     162     1     0     0     0.11     0.04
    latch: shared pool     2     0     0     27     0.00     0.04
    Disk file operations I/O     504     0     0     0     0.35     0.04
    gc current grant busy     148     0     0     0     0.10     0.04
    gcs log flush sync     84     0     0     1     0.06     0.04
    ges message buffer allocation     24,934     0     0     0     17.15     0.02
    enq: CR - block range reuse ckpt     83     0     0     0     0.06     0.02
    latch free     22     0     0     1     0.02     0.02
    CSS operation: action     13     0     0     2     0.01     0.02
    CSS initialization     4     0     0     6     0.00     0.02
    direct path read     1     0     0     21     0.00     0.02
    rdbms ipc reply     153     0     0     0     0.11     0.01
    db file parallel read     2     0     0     8     0.00     0.01
    direct path write     5     0     0     3     0.00     0.01
    gc current multi block request     49     0     0     0     0.03     0.01
    gc current block busy     5     0     0     2     0.00     0.01
    enq: PS - contention     24     50     0     0     0.02     0.01
    gc cr multi block request     54     0     0     0     0.04     0.01
    ges generic event     1     100     0     10     0.00     0.01
    gc current grant 2-way     35     0     0     0     0.02     0.01
    kfk: async disk IO     183     0     0     0     0.13     0.01
    Log archive I/O     3     0     0     2     0.00     0.01
    gc buffer busy acquire     2     0     0     3     0.00     0.00
    LGWR wait for redo copy     123     0     0     0     0.08     0.00
    IPC send completion sync     18     0     0     0     0.01     0.00
    enq: TA - contention     11     0     0     0     0.01     0.00
    read by other session     2     0     0     2     0.00     0.00
    enq: TM - contention     9     89     0     0     0.01     0.00
    latch: ges resource hash list     135     0     0     0     0.09     0.00
    PX Deq: Slave Session Stats     12     0     0     0     0.01     0.00
    KJC: Wait for msg sends to complete     89     0     0     0     0.06     0.00
    enq: TD - KTF dump entries     8     0     0     0     0.01     0.00
    enq: US - contention     7     0     0     0     0.00     0.00
    CSS operation: query     12     0     0     0     0.01     0.00
    enq: TK - Auto Task Serialization     6     100     0     0     0.00     0.00
    PX Deq: Signal ACK RSG     24     50     0     0     0.02     0.00
    log file single write     6     0     0     0     0.00     0.00
    enq: WL - contention     2     100     0     1     0.00     0.00
    ADR block file read     13     0     0     0     0.01     0.00
    ADR block file write     5     0     0     0     0.00     0.00
    latch: object queue header operation     1     0     0     1     0.00     0.00
    gc cr block busy     1     0     0     1     0.00     0.00
    rdbms ipc message     103,276     67     126,259     1223     71.03     
    PX Idle Wait     6,467     67     12,719     1967     4.45     
    wait for unread message on broadcast channel     7,240     100     7,221     997     4.98     
    gcs remote message     218,809     84     7,213     33     150.49     
    DIAG idle wait     203,228     95     7,185     35     139.77     
    shared server idle wait     121     100     3,630     30000     0.08     
    ASM background timer     3,343     0     3,611     1080     2.30     
    Space Manager: slave idle wait     723     100     3,610     4993     0.50     
    heartbeat monitor sleep     722     100     3,610     5000     0.50     
    ges remote message     73,089     52     3,609     49     50.27     
    dispatcher timer     66     88     3,608     54660     0.05     
    pmon timer     1,474     82     3,607     2447     1.01     
    PING     1,487     19     3,607     2426     1.02     
    Streams AQ: qmn slave idle wait     125     0     3,594     28754     0.09     
    Streams AQ: qmn coordinator idle wait     250     50     3,594     14377     0.17     
    smon timer     18     50     3,505     194740     0.01     
    JOX Jit Process Sleep     73     100     976     13370     0.05     
    class slave wait     56     0     605     10806     0.04     
    KSV master wait     2,215     98     1     0     1.52     
    SQL*Net message from client     109     0     0     2     0.07     
    PX Deq: Parse Reply     27     44     0     1     0.02     
    PX Deq: Join ACK     30     40     0     1     0.02     
    PX Deq: Execute Reply     20     30     0     0     0.01     
    Streams AQ: RAC qmn coordinator idle wait     259     100     0     0     0.18     
    Back to Wait Events Statistics
    Back to Top
    Wait Event Histogram
    * Units for Total Waits column: K is 1000, M is 1000000, G is 1000000000
    * % of Waits: value of .0 indicates value was <.05%; value of null is truly 0
    * % of Waits: column heading of <=1s is truly <1024ms, >1s is truly >=1024ms
    * Ordered by Event (idle events last)
              % of Waits
    Event     Total Waits     <1ms     <2ms     <4ms     <8ms     <16ms     <32ms     <=1s     >1s
    ADR block file read     13     100.0                                   
    ADR block file write     5     100.0                                   
    ADR file lock     6     100.0                                   
    ARCH wait for archivelog lock     3     100.0                                   
    ASM file metadata operation     3483     99.6     .1     .1                    .2     
    CGS wait for IPC msg     32.7K     100.0                                   
    CSS initialization     12     50.0                    50.0               
    CSS operation: action     21     28.6     9.5          61.9                    
    CSS operation: query     36     86.1     5.6     8.3                         
    DFS lock handle     6198     98.6     1.2     .1                    .1     
    Disk file operations I/O     909     95.7     3.6     .7                         
    IPC send completion sync     5469     99.9     .1     .0     .0                    
    KJC: Wait for msg sends to complete     313     100.0                                   
    LGWR wait for redo copy     122     100.0                                   
    Log archive I/O     3     66.7               33.3                    
    OJVM: Generic     36     55.6                              44.4     
    PX Deq: Signal ACK EXT     72     98.6     1.4                              
    PX Deq: Signal ACK RSG     2070     99.7               .0     .1     .0     .1     
    PX Deq: Slave Session Stats     2673     99.7     .2                         .1     .0
    PX Deq: reap credit     44.7K     100.0                                   
    SQL*Net break/reset to client     20     95.0                                   5.0
    SQL*Net message to client     14.7K     100.0                                   
    SQL*Net more data from client     32     100.0                                   
    SQL*Net more data to client     689     100.0                                   
    asynch descriptor resize     3387     100.0                                   
    buffer busy waits     2     100.0                                   
    control file parallel write     2455     96.6     2.2     .6     .6          .1          
    control file sequential read     36K     99.4     .3     .1     .1     .1     .1     .0     
    db file parallel read     397     8.8     .8     5.5     12.6     17.4     46.3     8.6     
    db file parallel write     8233     85.4     10.3     2.3     1.4     .4     .1          
    db file scattered read     26.3K     79.2     1.5     8.2     10.5     .6     .1     .0     
    db file sequential read     28.4K     60.2     3.3     18.0     18.1     .3     .1     .0     
    db file single write     2     100.0                                   
    direct path read     2     50.0                         50.0          
    direct path read temp     1722     95.8     2.8     .1     .5     .8     .1          
    direct path write     6     83.3                    16.7               
    direct path write temp     4842     96.3     2.7     .5     .2     .0     .0     .2     
    enq: AF - task serialization     1     100.0                                   
    enq: CF - contention     145     99.3     .7                              
    enq: CO - master slave det     1203     98.9     .8     .2                         
    enq: CR - block range reuse ckpt     83     100.0                                   
    enq: DR - contention     2     100.0                                   
    enq: FB - contention     131     100.0                                   
    enq: HW - contention     97     100.0                                   
    enq: JQ - contention     19     89.5     10.5                              
    enq: JS - job run lock - synchronize     3     100.0                                   
    enq: MD - contention     1     100.0                                   
    enq: MW - contention     2     100.0                                   
    enq: PS - contention     3207     99.5     .4     .1                         
    enq: TA - contention     11     100.0                                   
    enq: TD - KTF dump entries     8     100.0                                   
    enq: TK - Auto Task Serialization     6     100.0                                   
    enq: TM - contention     58     100.0                                   
    enq: TO - contention     3     100.0                                   
    enq: TQ - DDL contention     1     100.0                                   
    enq: TS - contention     1     100.0                                   
    enq: UL - contention     1     100.0                                   
    enq: US - contention     7     100.0                                   
    enq: WF - contention     11     81.8                              18.2     
    enq: WL - contention     2     50.0     50.0                              
    gc buffer busy acquire     2     50.0               50.0                    
    gc cr block 2-way     4934     99.9     .1                    .0     .0     
    gc cr block busy     35     68.6     31.4                              
    gc cr block congested     6     100.0                                   
    gc cr disk read     2     100.0                                   
    gc cr grant 2-way     4824     100.0     .0                              
    gc cr grant congested     2     100.0                                   
    gc cr multi block request     37.1K     99.8     .2     .0     .0     .0     .0     .0     
    gc current block 2-way     2134     99.9     .0                         .0     
    gc current block busy     7     14.3     14.3          14.3          28.6     28.6     
    gc current block congested     2     100.0                                   
    gc current grant 2-way     1337     99.9     .1                              
    gc current grant busy     7123     99.2     .2     .2     .0     .0     .3     .1     
    gc current grant congested     2     100.0                                   
    gc current multi block request     1260     99.8     .2                              
    gc object scan     28.8K     100.0                                   
    gcs log flush sync     65     95.4          3.1     1.5                    
    ges LMON to get to FTDONE     3                              100.0          
    ges generic event     1                         100.0               
    ges inquiry response     2     100.0                                   
    ges lms sync during dynamic remastering and reconfig     24                         16.7     29.2     54.2     
    ges message buffer allocation     63.1K     100.0                                   
    kfk: async disk IO     23.3K     100.0     .0     .0                         
    kjbdrmcvtq lmon drm quiesce: ping completion     9     11.1                              88.9     
    ksxr poll remote instances     19.1K     100.0                                   
    latch free     52     59.6     40.4                              
    latch: call allocation     2     100.0                                   
    latch: gc element     1     100.0                                   
    latch: gcs resource hash     1     100.0                                   
    latch: ges resource hash list     135     100.0                                   
    latch: object queue header operation     5     40.0     40.0     20.0                         
    latch: shared pool     5     40.0                    20.0     20.0     20.0     
    library cache load lock     74     9.5     5.4     8.1     17.6     10.8     13.5     35.1     
    library cache lock     493     99.2     .4     .4                         
    library cache pin     1186     98.4     .3     1.2     .1                    
    library cache: mutex X     6     100.0                                   
    log file parallel write     3897     72.9     1.5     17.1     7.5     .6     .3     .1     
    log file sequential read     350     4.6               3.1     59.4     30.0     2.9     
    log file single write     6     100.0                                   
    log file switch completion     3                         33.3          66.7     
    log file sync     385     90.4     3.6     4.7     .8     .5               
    name-service call wait     18          5.6     5.6     5.6     16.7     44.4     22.2     
    os thread startup     146                                   100.0     
    rdbms ipc reply     3763     99.7     .3                              
    read by other session     2     50.0          50.0                         
    reliable message     4565     99.7     .2     .0               .0     .1     
    row cache lock     2334     99.3     .2     .1                    .1     .3
    undo segment extension     8     50.0                    37.5     12.5          
    utl_file I/O     11     100.0                                   
    ASM background timer     3343     57.0     .3     .1     .1     .1          21.1     21.4
    DIAG idle wait     203.2K     3.4     .2     .4     18.0     41.4     14.8     21.8     
    JOX Jit Process Sleep     73                                   2.7     97.3
    KSV master wait     2213     99.4     .1     .2                    .3     
    PING     1487     81.0                                   19.0
    PX Deq Credit: send blkd     7     57.1          14.3     14.3          14.3          
    PX Deq: Execute Reply     2966     59.8     .8     9.5     5.6     10.2     2.6     11.4     
    PX Deq: Execution Msg     10.6K     72.4     12.1     2.6     2.5     .1     5.6     4.6     .0
    PX Deq: Join ACK     3006     77.9     22.1     .1                         
    PX Deq: Parse Reply     3184     67.1     31.1     1.6     .2                    
    PX Idle Wait     6466     .2     8.7     4.3     4.8     .3     .1     5.0     76.6
    SQL*Net message from client     14.7K     72.4     2.8     .8     .5     .9     .4     2.8     19.3
    Space Manager: slave idle wait     722                                        100.0
    Streams AQ: RAC qmn coordinator idle wait     259     100.0                                   
    Streams AQ: qmn coordinator idle wait     250     50.0                                   50.0
    Streams AQ: qmn slave idle wait     125                                        100.0
    class slave wait     55     67.3          7.3     1.8     5.5     1.8     7.3     9.1
    dispatcher timer     66     6.1                                   93.9
    gcs remote message     218.6K     7.7     1.8     1.2     1.6     1.7     15.7     70.3     
    ges remote message     72.9K     29.7     5.1     2.7     2.2     1.5     4.0     54.7     
    heartbeat monitor sleep     722                                        100.0
    jobq slave wait     7725                    .1          .0     99.9     
    pmon timer     1474     18.4                                   81.6
    rdbms ipc message     103.3K     20.7     2.7     1.5     1.3     .9     .7     40.7     31.6
    shared server idle wait     121                                        100.0
    smon timer     18                                        100.0
    wait for unread message on broadcast channel     7238                         .3          99.7     
    Back to Wait Events Statistics
    Back to Top
    Wait Event Histogram Detail (64 msec to 2 sec)
    * Units for Total Waits column: K is 1000, M is 1000000, G is 1000000000
    * Units for % of Total Waits: ms is milliseconds s is 1024 milliseconds (approximately 1 second)
    * % of Total Waits: total waits for all wait classes, including Idle
    * % of Total Waits: value of .0 indicates value was <.05%; value of null is truly 0
    * Ordered by Event (only non-idle events are displayed)
              % of Total Waits
    Event     Waits 64ms to 2s     <32ms     <64ms     <1/8s     <1/4s     <1/2s     <1s     <2s     >=2s
    ASM file metadata operation     6     99.8          .1     .1                    
    DFS lock handle     6     99.9               .1     .0               
    OJVM: Generic     16     55.6               2.8          41.7          
    PX Deq: Signal ACK RSG     3     99.9     .0     .1                         
    PX Deq: Slave Session Stats     3     99.9          .0               .0     .0     
    SQL*Net break/reset to client     1     95.0                              5.0     
    control file sequential read     1     100.0          .0                         
    db file parallel read     34     91.4     8.6                              
    db file scattered read     4     100.0     .0          .0                    
    db file sequential read     6     100.0     .0     .0     .0                    
    direct path write temp     11     99.8     .1     .1     .0                    
    enq: WF - contention     2     81.8               18.2                    
    gc cr block 2-way     1     100.0          .0                         
    gc cr multi block request     1     100.0          .0                         
    gc current block 2-way     1     100.0     .0                              
    gc current block busy     2     71.4     28.6                              
    gc current grant busy     8     99.9     .0     .1                         
    ges lms sync during dynamic remastering and reconfig     13     45.8     20.8     33.3                         
    kjbdrmcvtq lmon drm quiesce: ping completion     8     11.1     11.1     77.8                         
    latch: shared pool     1     80.0     20.0                              
    library cache load lock     26     64.9     14.9     12.2     4.1     4.1               
    log file parallel write     2     99.9     .0               .0               
    log file sequential read     10     97.1     2.0     .6     .3                    
    log file switch completion     2     33.3               66.7                    
    name-service call wait     4     77.8          22.2                         
    os thread startup     146               100.0                         
    reliable message     4     99.9          .0               .1          
    row cache lock     2     99.7                    .0     .0          .3
    Back to Wait Events Statistics
    Back to Top
    Wait Event Histogram Detail (4 sec to 2 min)
    * Units for Total Waits column: K is 1000, M is 1000000, G is 1000000000
    * Units for % of Total Waits: s is 1024 milliseconds (approximately 1 second) m is 64*1024 milliseconds (approximately 67 seconds or 1.1 minutes)
    * % of Total Waits: total waits for all wait classes, including Idle
    * % of Total Waits: value of .0 indicates value was <.05%; value of null is truly 0
    * Ordered by Event (only non-idle events are displayed)
              % of Total Waits
    Event     Waits 4s to 2m     <2s     <4s     <8s     <16s     <32s     < 1m     < 2m     >=2m
    row cache lock     6     99.7     .3                              
    Back to Wait Events Statistics
    Back to Top
    Wait Event Histogram Detail (4 min to 1 hr)
    No data exists for this section of the report.
    Back to Wait Events Statistics
    Back to Top
    Service Statistics
    * ordered by DB Time
    Service Name     DB Time (s)     DB CPU (s)     Physical Reads (K)     Logical Reads (K)
    ubshost     1,934     1,744     445     73,633
    SYS$USERS     105     45     1     404
    SYS$BACKGROUND     0     0     1     128
    ubshostXDB     0     0     0     0
    Back to Wait Events Statistics
    Back to Top
    Service Wait Class Stats
    * Wait Class info for services in the Service Statistics section.
    * Total Waits and Time Waited displayed for the following wait classes: User I/O, Concurrency, Administrative, Network
    * Time Waited (Wt Time) in seconds
    Service Name     User I/O Total Wts     User I/O Wt Time     Concurcy Total Wts     Concurcy Wt Time     Admin Total Wts     Admin Wt Time     Network Total Wts     Network Wt Time
    ubshost      60232     90     2644     4     0     0     13302     0
    SYS$USERS      997     2     525     19     0     0     1973     0
    SYS$BACKGROUND      1456     2     1258     14     0     0     0     0
    I am not able to paste the whole awr report. I have paste some of the sections of awr report.
    Please help.
    Thanks and Regards,

Maybe you are looking for

  • AVCHD File Structure From MAC to PC

    Hello, I know this is sort of off topic but I need the expertise of this forum.... I am the videographer (mac user) for a speaking group and have to film speeches 5-7 minutes in length each week. The problem is how to get the videos to each person wi

  • Finding Part Payment line items in FBL1N report

    Dear Sir, Client want to know the line items in vendor accounts that are already assigned to some invoice reference but still not cleared. (Part Payment) For this we mapped Invoice reference field (Column) in FBL1N report. But here in this column whe

  • Attaching a PDF document to an order from Web

    Hi, We have a requirement to attached a PDF document to an order in SAP from a web front end (its a custom web application written in cold fusion). We currently create orders from this web application which talks to SAP via XI. I know that using the

  • Transfer iPod everything to a new iTouch

    How do I transfer everything that is on my current iPod Nano 3rd Generation to a new iTouch 8GB that I'm planning on purchasing?

  • Pleease Help (UIX with EJB)

    it seems that uix cannot be used with ejb and session beans like ADF views. for exampe the master detail between pages doesn't work. i am getting crazy. please give me anykeys about how to use UIX with EJBs and Session beans