Database performing Very slow  - Lots of wait events

My database is on Oracle10g on Sun 5.10
The users are complaining about database is very slow.
I analyzed the indexes & later on rebuild them, hardly it has only 5% performance improvement.
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Duplicate post - Database performing Very slow  - Lots of wait events
Srini

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    user602126 wrote:
    Hi All,
    I have an issue with performance of the database.
    I noticed my database performance is very slow for the last 2 months. And recently i had made some changes in my database (like changing the NLS character set of my database) but prior to that itself i had an performance issue. But after the change i did recently still it got degraded.
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    Hi all,
    EBS 11i
    Oracle 9.2.0.6 32bit
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    Attached is the "STATSPACK" report for the slow performance time.
    STATSPACK report for
    DB Name         DB Id    Instance     Inst Num Release     Cluster Host
    OAPROD        4204192100 OAPROD              1 9.2.0.6.0   NO      oel5.prod
                                                                       e.local
                  Snap Id     Snap Time      Sessions Curs/Sess Comment
    Begin Snap:       551 02-Jan-13 22:00:04      123      59.1
      End Snap:       553 03-Jan-13 00:00:02       97      48.7
       Elapsed:              119.97 (mins)
    Cache Sizes (end)
    ~~~~~~~~~~~~~~~~~
                   Buffer Cache:       288M      Std Block Size:          8K
               Shared Pool Size:       288M          Log Buffer:     10,240K
    Load Profile
    ~~~~~~~~~~~~                            Per Second       Per Transaction
                      Redo size:             54,437.02             65,579.53
                  Logical reads:          2,053,336.52          2,473,626.15
                  Block changes:                383.39                461.86
                 Physical reads:             43,270.67             52,127.57
                Physical writes:                 46.63                 56.18
                     User calls:                 35.83                 43.16
                         Parses:                 25.53                 30.76
                    Hard parses:                  0.18                  0.21
                          Sorts:                186.25                224.38
                         Logons:                  0.08                  0.10
                       Executes:                108.76                131.02
                   Transactions:                  0.83
      % Blocks changed per Read:    0.02    Recursive Call %:     85.81
    Rollback per transaction %:    3.18       Rows per Sort:      3.77
    Instance Efficiency Percentages (Target 100%)
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
                Buffer Nowait %:   99.99       Redo NoWait %:     99.98
                Buffer  Hit   %:   97.90    In-memory Sort %:    100.00
                Library Hit   %:   99.87        Soft Parse %:     99.31
             Execute to Parse %:   76.52         Latch Hit %:     99.96
    Parse CPU to Parse Elapsd %:   37.01     % Non-Parse CPU:     99.98
    Shared Pool Statistics        Begin   End
                 Memory Usage %:   95.13   94.82
        % SQL with executions>1:   83.58   95.42
      % Memory for SQL w/exec>1:   79.28   92.57
    Top 5 Timed Events
    ~~~~~~~~~~~~~~~~~~                                                     % Total
    Event                                               Waits    Time (s) Ela Time
    CPU time                                                       74,717    84.80
    latch free                                        181,788       8,101     9.19
    db file scattered read                         47,546,136       2,893     3.28
    db file sequential read                        23,092,208       2,006     2.28
    buffer busy waits                               1,812,920         193      .22
    ^LWait Events for DB: OAPROD  Instance: OAPROD  Snaps: 551 -553
    -> s  - second
    -> cs - centisecond -     100th of a second
    -> ms - millisecond -    1000th of a second
    -> us - microsecond - 1000000th of a second
    -> ordered by wait time desc, waits desc (idle events last)
                                                                       Avg
                                                         Total Wait   wait    Waits
    Event                               Waits   Timeouts   Time (s)   (ms)     /txn
    latch free                        181,788    180,378      8,101     45     30.4
    db file scattered read         47,546,136          0      2,893      0  7,957.5
    db file sequential read        23,092,208          0      2,006      0  3,864.8
    buffer busy waits               1,812,920          2        193      0    303.4
    log file switch (checkpoint           124         51         69    560      0.0
    log file parallel write            21,251          0         39      2      3.6
    log file sync                       4,072          0         21      5      0.7
    control file parallel write         3,061          0         12      4      0.5
    library cache load lock                 5          2          9   1806      0.0
    log file switch completion             54          6          8    148      0.0
    PX Deq: Execute Reply               7,268          0          6      1      1.2
    PX Deq: Signal ACK                    297        103          6     21      0.0
    PX qref latch                         310        279          5     16      0.1
    PX Deq: Msg Fragment                4,301          0          4      1      0.7
    PX Deq Credit: send blkd            1,256          0          2      2      0.2
    PX Deq: Parse Reply                   267          0          2      7      0.0
    process startup                        46          0          2     39      0.0
    PX Deq: Table Q Sample                 84          0          2     22      0.0
    library cache pin                     337          0          1      4      0.1
    kksfbc child completion               116         76          1     11      0.0
    write complete waits                    2          1          1    491      0.0
    PX Deq: Join ACK                      212          0          1      4      0.0
    SQL*Net break/reset to clien        2,152          0          1      0      0.4
    enqueue                                80          0          1      7      0.0
    db file parallel read                  38          0          0     13      0.0
    SQL*Net more data to client        24,272          0          0      0      4.1
    log file single write                 160          0          0      2      0.0
    PX Deq: Table Q qref                   62          0          0      4      0.0
    control file sequential read        4,336          0          0      0      0.7
    direct path read                   45,818          0          0      0      7.7
    library cache lock                      1          0          0     76      0.0
    direct path write                  22,821          0          0      0      3.8
    LGWR wait for redo copy             5,387          0          0      0      0.9
    PX Deq Credit: need buffer            206          0          0      0      0.0
    undo segment extension             40,035     40,028          0      0      6.7
    db file parallel write              3,904          0          0      0      0.7
    db file single write                   40          0          0      0      0.0
    log file sequential read              160          0          0      0      0.0
    async disk IO                          40          0          0      0      0.0
    SQL*Net message from client       269,626          0    337,613   1252     45.1
    pipe get                            5,313      5,286     21,063   3964      0.9
    queue messages                      1,466      1,464     14,023   9566      0.2
    wakeup time manager                   239        238      6,738  28191      0.0
    PX Idle Wait                        3,475      3,042      6,026   1734      0.6
    jobq slave wait                       961        960      2,824   2939      0.2
    PX Deq: Execution Msg               9,423          1        159     17      1.6
    PX Deq: Table Q Normal              1,362          4          8      6      0.2
    SQL*Net more data from clien       12,643          0          2      0      2.1
    SQL*Net message to client         269,616          0          0      0     45.1
    ^LWait Events for DB: OAPROD  Instance: OAPROD  Snaps: 551 -553
    -> s  - second
    -> cs - centisecond -     100th of a second
    -> ms - millisecond -    1000th of a second
    -> us - microsecond - 1000000th of a second
    -> ordered by wait time desc, waits desc (idle events last)
                                                                       Avg
                                                         Total Wait   wait    Waits
    Event                               Waits   Timeouts   Time (s)   (ms)     /txn
    ^LBackground Wait Events for DB: OAPROD  Instance: OAPROD  Snaps: 551 -553
    -> ordered by wait time desc, waits desc (idle events last)
                                                                       Avg
                                                         Total Wait   wait    Waits
    Event                               Waits   Timeouts   Time (s)   (ms)     /txn
    log file parallel write            21,251          0         39      2      3.6
    latch free                            407        353         13     32      0.1
    control file parallel write         2,981          0         12      4      0.5
    db file scattered read              3,464          0          5      1      0.6
    db file sequential read             1,756          0          2      1      0.3
    rdbms ipc reply                       137          0          2     16      0.0
    log file single write                 160          0          0      2      0.0
    enqueue                                17          0          0      6      0.0
    control file sequential read        3,346          0          0      0      0.6
    LGWR wait for redo copy             5,387          0          0      0      0.9
    db file parallel write              3,904          0          0      0      0.7
    direct path read                    1,833          0          0      0      0.3
    direct path write                   1,833          0          0      0      0.3
    log file sequential read              160          0          0      0      0.0
    buffer busy waits                      21          0          0      0      0.0
    rdbms ipc message                  41,753      9,476     33,069    792      7.0
    pmon timer                          4,438      2,164      7,021   1582      0.7
    smon timer                            522          1      6,820  13064      0.1
    ^LSQL ordered by Gets for DB: OAPROD  Instance: OAPROD  Snaps: 551 -553
    -> End Buffer Gets Threshold:     10000
    -> Note that resources reported for PL/SQL includes the resources used by
       all SQL statements called within the PL/SQL code.  As individual SQL
       statements are also reported, it is possible and valid for the summed
       total % to exceed 100
                                                         CPU      Elapsd
      Buffer Gets    Executions  Gets per Exec  %Total Time (s)  Time (s) Hash Value
      5,636,117,159           28  201,289,898.5   38.1 ######## #########  835260576
    Module: RAXTRX
    INSERT INTO RA_INTERFACE_ERRORS  (INTERFACE_LINE_ID,   MESSAGE_
    TEXT,   INVALID_VALUE) SELECT  INTERFACE_LINE_ID, :b_err_msg6, '
    trx_number='||T.TRX_NUMBER||','||'customer_trx_id='||TL.CUSTOMER
    _TRX_ID FROM RA_INTERFACE_LINES_GT IL, RA_CUSTOMER_TRX_LINES TL,
    RA_CUSTOMER_TRX T WHERE  IL.REQUEST_ID = :b1 AND    IL.INTERFAC
        511,626,129           20   25,581,306.5    3.5  8155.90  15045.56  205460129
    Module: JDBC Thin Client
    select  TRANSACTION_BRANCH , BRANCH_ADDRESS_1 , BRANCH_ADDRESS_2
    , BRANCH_PHONES , BRANCH_FAX , BRANCH_TIN , TRX_NUMBER , TRX_NU
    MBER_DISP , TRX_DATE , TRX_DATE_DISP , BILL_TO_CUSTOMER_ID , BIL
    L_TO_CUSTOMER_NAME , SHIP_DATE_ACTUAL_DISP , SHIP_TO_NAME , SHIP
    _TO_ADDRESS1 , SHIP_TO_ADDRESS2 , SHIP_TO_ADDRESS3 , SHIP_TO_ADD
        114,013,000        8,544       13,344.2    0.8  2919.47   4527.54  803969757
    Module: JDBC Thin Client
    SELECT COALESCE(DELV_ADDR.CITY, DELV_ADDR.PROVINCE) FROM APPS.OE
    _ORDER_HEADERS_ALL OE_HEADERS , APPS.RA_SITE_USES_ALL DELV_SITE
    , APPS.RA_ADDRESSES_ALL DELV_ADDR WHERE TO_CHAR(ORDER_NUMBER) =
    :B1 AND DELV_SITE.SITE_USE_ID(+) = OE_HEADERS.DELIVER_TO_ORG_ID
    AND DELV_ADDR.ADDRESS_ID(+) = DELV_SITE.ADDRESS_ID
        113,972,897        8,550       13,330.2    0.8  2924.20   4550.22 3761220362
    Module: JDBC Thin Client
    SELECT DELV_ADDR.ADDRESS1 FROM APPS.OE_ORDER_HEADERS_ALL OE_HEAD
    ERS , APPS.RA_SITE_USES_ALL DELV_SITE , APPS.RA_ADDRESSES_ALL DE
    LV_ADDR WHERE TO_CHAR(ORDER_NUMBER) = :B1 AND DELV_SITE.SITE_USE
    _ID(+) = OE_HEADERS.DELIVER_TO_ORG_ID AND DELV_ADDR.ADDRESS_ID(+
    ) = DELV_SITE.ADDRESS_ID
        113,972,850        8,551       13,328.6    0.8  2919.13   4533.69 4273350236
    Module: JDBC Thin Client...more... > http://www.datafilehost.com/download-60d3df1e.html
    If downloading this file...
    Uncheck [ ] Use our download manager and get recommended downloads
    Your assistance is highly appreciated.
    Thanks a lot,
    Jan

    Hi hussein,
    Is this normal locks for the apps table which is "3". Im selecting the locks even if there is no users in the system.
    SELECT o.owner, o.object_name, o.object_type, o.last_ddl_time, o.status, l.session_id,
    l.oracle_username, l.locked_mode
    FROM dba_objects o, gv$locked_object l
    WHERE o.object_id = l.object_id;
    OWNER       OBJECT_NAME                                OBJECT_TYPE       LAST_DDL  STATUS       SESSION_ID       ORACLE_USERNAME       LOCKED_MODE
    APPLSYS       FND_CONCURRENT_QUEUES               TABLE      24-APR-10      VALID      109      APPS      3
    APPLSYS       FND_CONCURRENT_REQUESTS               TABLE      24-APR-10      VALID      25      APPS      3
    APPLSYS       AQ$_FND_CP_GSM_OPP_AQTBL_T       TABLE      24-APR-10      VALID      143      APPS      3
    APPLSYS       AQ$_FND_CP_GSM_OPP_AQTBL_T       TABLE      24-APR-10      VALID      139      APPS      3
    APPLSYS       AQ$_FND_CP_GSM_OPP_AQTBL_T       TABLE      24-APR-10      VALID      138      APPS      3
    APPLSYS       AQ$_FND_CP_GSM_OPP_AQTBL_T       TABLE      24-APR-10      VALID      131      APPS      3
    APPLSYS       AQ$_FND_CP_GSM_OPP_AQTBL_T       TABLE      24-APR-10      VALID      115      APPS      3
    APPLSYS       AQ$_FND_CP_GSM_OPP_AQTBL_T       TABLE      24-APR-10      VALID      103      APPS      3
    APPLSYS       AQ$_FND_CP_GSM_OPP_AQTBL_T       TABLE      24-APR-10      VALID      87      APPS      3
    APPLSYS       AQ$_FND_CP_GSM_OPP_AQTBL_H       TABLE      24-APR-10      VALID      143      APPS      3
    APPLSYS       AQ$_FND_CP_GSM_OPP_AQTBL_H       TABLE      24-APR-10      VALID      139      APPS      3
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