Concurrent delete queries on one table

Hi folks,
I just recently started working with SQL server. I did my research and I guess that the post http://social.msdn.microsoft.com/Forums/en-US/7fe7499e-10a5-4371-84a4-aa1df8187a04/can-i-prevent-deadlock-during-concurrent-delete?forum=transactsql hits and somehow
sovles my problem 100%.
I am glad to have my issue resolved but I am also interested in understanding what went wrong deep inside as much as learn what I might do better. My scenario:
4 processes updating disjunct entries at different intervals within the same table and issuing delete queries on that table. Sometimes (maybe once a day) that gives me a deadlock. colums: value, mainclass, subclass, timestamp with a clustered index at timestamp
(My statement is of the form "delete from table where maintype=sth and subtype=sth and timestamp=st")
I'll append a sample deadlock graph. My main questions, which I couldn't answer so far:
1. Is this expected behaviour or should SQL Server be able to handle such requests, or to put it right do I have to care for structures that avoid the above scenario, do I have to reconfigure or is there sth else to look at?
2. Is this a configuration problem?
3. I also do not understand why the report states that the processes fought for page ids when the lock escalation type was set to table.
4. As far as I got to know until now having a clustered index on the timestamp colum is likely to boost my problem rather than solving it?
I am really looking forward to any insights you can give.
Bye,
Lamu
<deadlock>
<victim-list>
<victimProcess id="process56d746188" />
</victim-list>
<process-list>
<process id="process56d746188" taskpriority="0" logused="0" waitresource="PAGE: 5:1:210559 " waittime="3120" ownerId="2642852343" transactionname="user_transaction" lasttranstarted="2014-09-05T11:16:12.683" XDES="0x5a36bd740" lockMode="U" schedulerid="4" kpid="3204" status="suspended" spid="72" sbid="1" ecid="4" priority="0" trancount="0" lastbatchstarted="2014-09-05T11:16:12.990" lastbatchcompleted="2014-09-05T11:16:12.683" lastattention="1900-01-01T00:00:00.683" clientapp="WIRELESS LOCALIZATION SYSTEM 1.15.0" hostname="S-ITCS-ORTUNG" hostpid="6504" isolationlevel="read committed (2)" xactid="2642852343" currentdb="5" lockTimeout="4294967295" clientoption1="671088672" clientoption2="128056">
<executionStack>
<frame procname="adhoc" line="1" stmtstart="94" sqlhandle="0x020000008e714d2c0ee98fc35b8a7712a719321f42c9366a0000000000000000000000000000000000000000">
DELETE [statisticlog] WHERE [statisticid]=@1 AND [storageid]=@2 AND [timest]<@3 </frame>
<frame procname="adhoc" line="1" sqlhandle="0x02000000e1914b015d3b4d5ca54af4b548f2990acfe909ec0000000000000000000000000000000000000000">
DELETE from statisticlog where ((statisticid='node.temperatur') and (storageid='17:85:00:00:1a:18.0')) AND timest < {ts '1970-01-01 01:00:00.000' } </frame>
</executionStack>
<inputbuf>
DELETE from statisticlog where ((statisticid='node.temperatur') and (storageid='17:85:00:00:1a:18.0')) AND timest < {ts '1970-01-01 01:00:00.000' } </inputbuf>
</process>
<process id="process7edeee188" taskpriority="0" logused="0" waitresource="PAGE: 5:1:196655 " waittime="3124" ownerId="2642852343" transactionname="user_transaction" lasttranstarted="2014-09-05T11:16:12.683" XDES="0x8747f1740" lockMode="U" schedulerid="2" kpid="7108" status="suspended" spid="72" sbid="1" ecid="2" priority="0" trancount="0" lastbatchstarted="2014-09-05T11:16:12.990" lastbatchcompleted="2014-09-05T11:16:12.683" lastattention="1900-01-01T00:00:00.683" clientapp="WIRELESS LOCALIZATION SYSTEM 1.15.0" hostname="S-ITCS-ORTUNG" hostpid="6504" isolationlevel="read committed (2)" xactid="2642852343" currentdb="5" lockTimeout="4294967295" clientoption1="671088672" clientoption2="128056">
<executionStack>
<frame procname="adhoc" line="1" stmtstart="94" sqlhandle="0x020000008e714d2c0ee98fc35b8a7712a719321f42c9366a0000000000000000000000000000000000000000">
DELETE [statisticlog] WHERE [statisticid]=@1 AND [storageid]=@2 AND [timest]<@3 </frame>
<frame procname="adhoc" line="1" sqlhandle="0x02000000e1914b015d3b4d5ca54af4b548f2990acfe909ec0000000000000000000000000000000000000000">
DELETE from statisticlog where ((statisticid='node.temperatur') and (storageid='17:85:00:00:1a:18.0')) AND timest < {ts '1970-01-01 01:00:00.000' } </frame>
</executionStack>
<inputbuf>
DELETE from statisticlog where ((statisticid='node.temperatur') and (storageid='17:85:00:00:1a:18.0')) AND timest < {ts '1970-01-01 01:00:00.000' } </inputbuf>
</process>
<process id="process7edeefc38" taskpriority="0" logused="0" waitresource="PAGE: 5:1:196655 " waittime="3119" ownerId="2642852529" transactionname="user_transaction" lasttranstarted="2014-09-05T11:16:12.973" XDES="0x87f3ddbb0" lockMode="U" schedulerid="2" kpid="5216" status="suspended" spid="62" sbid="1" ecid="2" priority="0" trancount="0" lastbatchstarted="2014-09-05T11:16:12.980" lastbatchcompleted="2014-09-05T11:16:12.973" lastattention="1900-01-01T00:00:00.973" clientapp="WIRELESS LOCALIZATION SYSTEM 1.15.0" hostname="S-ITCS-ORTUNG" hostpid="1308" isolationlevel="read committed (2)" xactid="2642852529" currentdb="5" lockTimeout="4294967295" clientoption1="671088672" clientoption2="128056">
<executionStack>
<frame procname="adhoc" line="1" stmtstart="94" sqlhandle="0x020000008e714d2c0ee98fc35b8a7712a719321f42c9366a0000000000000000000000000000000000000000">
DELETE [statisticlog] WHERE [statisticid]=@1 AND [storageid]=@2 AND [timest]<@3 </frame>
<frame procname="adhoc" line="1" sqlhandle="0x02000000dd48f433f7e565ecccaaf5283c2e99548dd371d20000000000000000000000000000000000000000">
DELETE from statisticlog where ((statisticid='GWConnect') and (storageid='17:85:00:00:19:c8.0')) AND timest < {ts '1970-01-01 01:00:00.000' } </frame>
</executionStack>
<inputbuf>
DELETE from statisticlog where ((statisticid='GWConnect') and (storageid='17:85:00:00:19:c8.0')) AND timest < {ts '1970-01-01 01:00:00.000' } </inputbuf>
</process>
<process id="process681871868" taskpriority="0" logused="0" waitresource="PAGE: 5:1:210559 " waittime="3118" ownerId="2642852529" transactionname="user_transaction" lasttranstarted="2014-09-05T11:16:12.973" XDES="0x87bb39740" lockMode="U" schedulerid="1" kpid="8088" status="suspended" spid="62" sbid="1" ecid="3" priority="0" trancount="0" lastbatchstarted="2014-09-05T11:16:12.980" lastbatchcompleted="2014-09-05T11:16:12.973" lastattention="1900-01-01T00:00:00.973" clientapp="WIRELESS LOCALIZATION SYSTEM 1.15.0" hostname="S-ITCS-ORTUNG" hostpid="1308" isolationlevel="read committed (2)" xactid="2642852529" currentdb="5" lockTimeout="4294967295" clientoption1="671088672" clientoption2="128056">
<executionStack>
<frame procname="adhoc" line="1" stmtstart="94" sqlhandle="0x020000008e714d2c0ee98fc35b8a7712a719321f42c9366a0000000000000000000000000000000000000000">
DELETE [statisticlog] WHERE [statisticid]=@1 AND [storageid]=@2 AND [timest]<@3 </frame>
<frame procname="adhoc" line="1" sqlhandle="0x02000000dd48f433f7e565ecccaaf5283c2e99548dd371d20000000000000000000000000000000000000000">
DELETE from statisticlog where ((statisticid='GWConnect') and (storageid='17:85:00:00:19:c8.0')) AND timest < {ts '1970-01-01 01:00:00.000' } </frame>
</executionStack>
<inputbuf>
DELETE from statisticlog where ((statisticid='GWConnect') and (storageid='17:85:00:00:19:c8.0')) AND timest < {ts '1970-01-01 01:00:00.000' } </inputbuf>
</process>
<process id="process6e959f0c8" taskpriority="0" logused="10000" waittime="3087" schedulerid="4" kpid="6624" status="suspended" spid="62" sbid="1" ecid="0" priority="0" trancount="2" lastbatchstarted="2014-09-05T11:16:12.980" lastbatchcompleted="2014-09-05T11:16:12.973" lastattention="1900-01-01T00:00:00.973" clientapp="WIRELESS LOCALIZATION SYSTEM 1.15.0" hostname="S-ITCS-ORTUNG" hostpid="1308" loginname="LocSystem" isolationlevel="read committed (2)" xactid="2642852529" currentdb="5" lockTimeout="4294967295" clientoption1="671088672" clientoption2="128056">
<executionStack>
<frame procname="adhoc" line="1" stmtstart="94" sqlhandle="0x020000008e714d2c0ee98fc35b8a7712a719321f42c9366a0000000000000000000000000000000000000000">
DELETE [statisticlog] WHERE [statisticid]=@1 AND [storageid]=@2 AND [timest]<@3 </frame>
<frame procname="adhoc" line="1" sqlhandle="0x02000000dd48f433f7e565ecccaaf5283c2e99548dd371d20000000000000000000000000000000000000000">
DELETE from statisticlog where ((statisticid='GWConnect') and (storageid='17:85:00:00:19:c8.0')) AND timest < {ts '1970-01-01 01:00:00.000' } </frame>
</executionStack>
<inputbuf>
DELETE from statisticlog where ((statisticid='GWConnect') and (storageid='17:85:00:00:19:c8.0')) AND timest < {ts '1970-01-01 01:00:00.000' } </inputbuf>
</process>
</process-list>
<resource-list>
<pagelock fileid="1" pageid="210559" dbid="5" subresource="FULL" objectname="LocSystem.LocSystem.statisticlog" id="lock707200480" mode="U" associatedObjectId="72057594045464576">
<owner-list>
<owner id="process6e959f0c8" mode="U" />
</owner-list>
<waiter-list>
<waiter id="process56d746188" mode="U" requestType="wait" />
</waiter-list>
</pagelock>
<pagelock fileid="1" pageid="196655" dbid="5" subresource="FULL" objectname="LocSystem.LocSystem.statisticlog" id="lock6ddb9e400" mode="U" associatedObjectId="72057594045464576">
<owner-list>
<owner id="process681871868" mode="U" />
</owner-list>
<waiter-list>
<waiter id="process7edeee188" mode="U" requestType="wait" />
</waiter-list>
</pagelock>
<pagelock fileid="1" pageid="196655" dbid="5" subresource="FULL" objectname="LocSystem.LocSystem.statisticlog" id="lock6ddb9e400" mode="U" associatedObjectId="72057594045464576">
<owner-list>
<owner id="process7edeee188" mode="U" requestType="wait" />
</owner-list>
<waiter-list>
<waiter id="process7edeefc38" mode="U" requestType="wait" />
</waiter-list>
</pagelock>
<pagelock fileid="1" pageid="210559" dbid="5" subresource="FULL" objectname="LocSystem.LocSystem.statisticlog" id="lock707200480" mode="U" associatedObjectId="72057594045464576">
<owner-list>
<owner id="process56d746188" mode="U" requestType="wait" />
</owner-list>
<waiter-list>
<waiter id="process681871868" mode="U" requestType="wait" />
</waiter-list>
</pagelock>
<exchangeEvent id="Pipe59935a700" WaitType="e_waitPipeGetRow" nodeId="1">
<owner-list>
<owner id="process7edeefc38" />
<owner id="process681871868" />
</owner-list>
<waiter-list>
<waiter id="process6e959f0c8" />
</waiter-list>
</exchangeEvent>
</resource-list>
</deadlock>

>1. Is this expected behaviour or should SQL Server be able to handle such requests, or to put it right do I have to >care for structures that avoid the above scenario, do I have to reconfigure or is there sth else to look at?
Basically yes. Because your queries are non-trivial the DELETE query plans for different queries may conflict.
>2. Is this a configuration problem?
It's influenced by your table indexing, and especially how well your DELETE statements are supported by the physical data structures in your table. The bigger and more complicated the physical design, the more likely that concurrent DELETES will conflict.
>3. I also do not understand why the report states that the processes fought for page ids when the lock escalation >type was set to table.
Page locks are never the result of lock escalation. Row locks escalate to Table locks. Period. When a query uses Page locks it's an optimization to avoid taking lots of row locks to begin with. But this comes at the possible cost
of some concurrency. The
ROWLOCK query hint, possibly along with the READPAST hint can force more granular locking.
>4. As far as I got to know until now having a clustered index on the timestamp colum is likely to boost my problem >rather than solving it?
You minimize the locking conflicts by ensuring that it's very simple to find the rows affected by your DELETE. There's not enough information here to speculate on which physical design (partition scheme, clustered index, non-clustered indexes...) is optimal
for this.
A threshold question is whether you really _need_ these deletes to run concurrently on the table. If not, then you can simply serialize them (eg with TABLOCK).
David
David http://blogs.msdn.com/b/dbrowne/

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            DELETE TABLE LT_SOURCE FROM LS_SOURCE.
            SOURCE-LINES = SOURCE-LINES - 1.
        ENDLOOP.
But I'm unable to delete the selected rows, It is getting deleted the last rows eventhough I select the other row.
So I thought of doing with respect to the field.

How to improve speed of queries that use ORM one table per concrete class

Hi,
Many tools that make ORM (Object Relational Mapping) like Castor, Hibernate, Toplink, JPOX, etc.., have the one table per concrete class feature that maps objects to follow structure:
CREATE TABLE ABSTRACTPRODUCT (
    ID VARCHAR(8) NOT NULL,
    DESCRIPTION VARCHAR(60) NOT NULL,
    PRIMARY KEY(ID)
CREATE TABLE PRODUCT (
    ID VARCHAR(8) NOT NULL REFERENCES ABSTRACTPRODUCT(ID),
    CODE VARCHAR(10) NOT NULL,
    PRICE DECIMAL(12,2),
    PRIMARY KEY(ID)
CREATE UNIQUE INDEX iProduct ON Product(code)
CREATE TABLE BOOK (
    ID VARCHAR(8) NOT NULL REFERENCES PRODUCT(ID),
    AUTHOR VARCHAR(60) NOT NULL,
    PRIMARY KEY (ID)
CREATE TABLE COMPACTDISK (
    ID VARCHAR(8) NOT NULL REFERENCES PRODUCT(ID),
    ARTIST VARCHAR(60) NOT NULL,
    PRIMARY KEY(ID)
there is a way to improve queries like
SELECT
    pd.code CODE,
    abpd.description DESCRIPTION,
    DECODE(bk.id,NULL,cd.artist,bk.author) PERSON
FROM
    ABSTRACTPRODUCT abpd,
    PRODUCT pd,
    BOOK bk,
    COMPACTDISK cd
WHERE
    pd.id = abpd.id AND
    bk.id(+) = abpd.id AND
    cd.id(+) = abpd.id AND
    pd.code like '101%'
or like this:
SELECT
    pd.code CODE,
    abpd.description DESCRIPTION,
    DECODE(bk.id,NULL,cd.artist,bk.author) PERSON
FROM
    ABSTRACTPRODUCT abpd,
    PRODUCT pd,
    BOOK bk,
    COMPACTDISK cd
WHERE
    pd.id = abpd.id AND
    bk.id(+) = abpd.id AND
    cd.id(+) = abpd.id AND
    abpd.description like '%STARS%' AND
    pd.price BETWEEN 1 AND 10
think in a table with many rows, then exists something inside MaxDB to improve this type of queries? like some anotations on SQL? or declare tables that extends another by PK? on other databases i managed this using Materialized Views, but i think that this can be faster just using PK, i'm wrong? the better is to consolidate all tables in one table? what is the impact on database size with this consolidation?
note: with consolidation i will miss NOT NULL constraint at database side.
thanks for any insight.
Clóvis

Hi Lars,
i dont understand because the optimizer get that Index for TM at execution plan, and because dont use the join via KEY column, note the WHERE clause is "TM.OID = MF.MY_TIPO_MOVIMENTO" by the key column, and the optimizer uses an INDEX that the indexed column is ID_SYS, that isnt and cant be a primary key, because its not UNIQUE, follow the index columns:
indexes of TipoMovimento
INDEXNAME     COLUMNNAME          SORT     COLUMNNO     DATATYPE     LEN     INDEX_USED     FILESTATE     DISABLED
ITIPOMOVIMENTO     TIPO               ASC     1          VARCHAR          2     220546          OK          NO
ITIPOMOVIMENTO     ID_SYS               ASC     2          CHAR          6     220546          OK          NO
ITIPOMOVIMENTO     MY_CONTA_DEBITO          ASC     3          CHAR          8     220546          OK          NO
ITIPOMOVIMENTO     MY_CONTA_CREDITO     ASC     4          CHAR          8     220546          OK          NO
ITIPOMOVIMENTO1     ID_SYS               ASC     1          CHAR          6     567358          OK          NO
ITIPOMOVIMENTO2     DESCRICAO          ASC     1          VARCHAR          60     94692          OK          NO
after i create the index iTituloCobrancaX7 on TituloCobranca(OID,DATA_VENCIMENTO) in a backup instance and get surprised with the follow explain:
OWNER     TABLENAME     COLUMN_OR_INDEX          STRATEGY                    PAGECOUNT
     TC          ITITULOCOBRANCA1     RANGE CONDITION FOR INDEX          5368
               DATA_VENCIMENTO               (USED INDEX COLUMN)
     MF          OID               JOIN VIA KEY COLUMN               9427
     TM          OID               JOIN VIA KEY COLUMN               22
                              TABLE HASHED
     PS          OID               JOIN VIA KEY COLUMN               1350
     BOL          OID               JOIN VIA KEY COLUMN               497
                                   NO TEMPORARY RESULTS CREATED
     JDBC_CURSOR_19                    RESULT IS COPIED   , COSTVALUE IS     988
note that now the optimizer gets the index ITITULOCOBRANCA1 as i expected, if i drop the new index iTituloCobrancaX7 the optimizer still getting this execution plan, with this the query executes at 110 ms, with that great news i do same thing in the production system, but the execution plan dont changes, and i still getting a long execution time this time at 413516 ms. maybe the problem is how optimizer measure my tables.
i checked in DBAnalyser that the problem is catalog cache hit rate (we discussed this at [catalog cache hit rate, how to increase?|;
) and the low selectivity of this SQL command, then its because of this that to achieve a better selectivity i must have an index with, MF.MY_SACADO, MF.TIPO and TC.DATA_VENCIMENTO, as explained in previous posts, since this type of index inside MaxDB isnt possible, i have no choice to speed this type of query without changing tables structure.
MaxDB developers can develop this type of index? or a feature like this dont have any plans to be made?
if no, i must create another schema, to consolidate tables to speed queries on my system, but with this consolidation i will get more overhead, i must solve the less selectivity because i think if the data on tables increase, the query becomes impossible, i see that CREATE INDEX supports FUNCTION, maybe a   FUNCTION that join data of two tables can solve this?
about instance configuration it is:
Machine:
Version:       '64BIT Kernel'
Version:       'X64/LIX86 7.6.03   Build 007-123-157-515'
Version:       'FAST'
Machine:       'x86_64'
Processors:    2 ( logical: 8, cores: 8 )
data volumes:
ID     MODE     CONFIGUREDSIZE     USABLESIZE     USEDSIZE     USEDSIZEPERCENTAGE     DROPVOLUME     TOTALCLUSTERAREASIZE     RESERVEDCLUSTERAREASIZE     USEDCLUSTERAREASIZE     PATH
1     NORMAL     4194304          4194288          379464          9               NO          0               0               0               /db/SPDT/data/data01.dat
2     NORMAL     4194304          4194288          380432          9               NO          0               0               0               /db/SPDT/data/data02.dat
3     NORMAL     4194304          4194288          379184          9               NO          0               0               0               /db/SPDT/data/data03.dat
4     NORMAL     4194304          4194288          379624          9               NO          0               0               0               /db/SPDT/data/data04.dat
5     NORMAL     4194304          4194288          380024          9               NO          0               0               0               /db/SPDT/data/data05.dat
log volumes:
ID     CONFIGUREDSIZE     USABLESIZE     PATH               MIRRORPATH
1     51200          51176          /db/SPDT/log/log01.dat     ?
parameters:
KERNELVERSION                         KERNEL    7.6.03   BUILD 007-123-157-515
INSTANCE_TYPE                         OLTP
MCOD                                  NO
_SERVERDB_FOR_SAP                     YES
_UNICODE                              NO
DEFAULT_CODE                          ASCII
DATE_TIME_FORMAT                      ISO
CONTROLUSERID                         DBM
CONTROLPASSWORD
MAXLOGVOLUMES                         2
MAXDATAVOLUMES                        11
LOG_VOLUME_NAME_001                   /db/SPDT/log/log01.dat
LOG_VOLUME_TYPE_001                   F
LOG_VOLUME_SIZE_001                   6400
DATA_VOLUME_NAME_0005                 /db/SPDT/data/data05.dat
DATA_VOLUME_NAME_0004                 /db/SPDT/data/data04.dat
DATA_VOLUME_NAME_0003                 /db/SPDT/data/data03.dat
DATA_VOLUME_NAME_0002                 /db/SPDT/data/data02.dat
DATA_VOLUME_NAME_0001                 /db/SPDT/data/data01.dat
DATA_VOLUME_TYPE_0005                 F
DATA_VOLUME_TYPE_0004                 F
DATA_VOLUME_TYPE_0003                 F
DATA_VOLUME_TYPE_0002                 F
DATA_VOLUME_TYPE_0001                 F
DATA_VOLUME_SIZE_0005                 524288
DATA_VOLUME_SIZE_0004                 524288
DATA_VOLUME_SIZE_0003                 524288
DATA_VOLUME_SIZE_0002                 524288
DATA_VOLUME_SIZE_0001                 524288
DATA_VOLUME_MODE_0005                 NORMAL
DATA_VOLUME_MODE_0004                 NORMAL
DATA_VOLUME_MODE_0003                 NORMAL
DATA_VOLUME_MODE_0002                 NORMAL
DATA_VOLUME_MODE_0001                 NORMAL
DATA_VOLUME_GROUPS                    1
LOG_BACKUP_TO_PIPE                    NO
MAXBACKUPDEVS                         2
LOG_MIRRORED                          NO
MAXVOLUMES                            14
LOG_IO_BLOCK_COUNT                    8
DATA_IO_BLOCK_COUNT                   64
BACKUP_BLOCK_CNT                      64
_DELAY_LOGWRITER                      0
LOG_IO_QUEUE                          50
_RESTART_TIME                         600
MAXCPU                                8
MAX_LOG_QUEUE_COUNT                   0
USED_MAX_LOG_QUEUE_COUNT              8
LOG_QUEUE_COUNT                       1
MAXUSERTASKS                          500
_TRANS_RGNS                           8
_TAB_RGNS                             8
_OMS_REGIONS                          0
_OMS_RGNS                             7
OMS_HEAP_LIMIT                        0
OMS_HEAP_COUNT                        8
OMS_HEAP_BLOCKSIZE                    10000
OMS_HEAP_THRESHOLD                    100
OMS_VERS_THRESHOLD                    2097152
HEAP_CHECK_LEVEL                      0
_ROW_RGNS                             8
RESERVEDSERVERTASKS                   16
MINSERVERTASKS                        28
MAXSERVERTASKS                        28
_MAXGARBAGE_COLL                      1
_MAXTRANS                             4008
MAXLOCKS                              120080
_LOCK_SUPPLY_BLOCK                    100
DEADLOCK_DETECTION                    4
SESSION_TIMEOUT                       180
OMS_STREAM_TIMEOUT                    30
REQUEST_TIMEOUT                       5000
_IOPROCS_PER_DEV                      2
_IOPROCS_FOR_PRIO                     0
_IOPROCS_FOR_READER                   0
_USE_IOPROCS_ONLY                     NO
_IOPROCS_SWITCH                       2
LRU_FOR_SCAN                          NO
_PAGE_SIZE                            8192
_PACKET_SIZE                          131072
_MINREPLY_SIZE                        4096
_MBLOCK_DATA_SIZE                     32768
_MBLOCK_QUAL_SIZE                     32768
_MBLOCK_STACK_SIZE                    32768
_MBLOCK_STRAT_SIZE                    16384
_WORKSTACK_SIZE                       8192
_WORKDATA_SIZE                        8192
_CAT_CACHE_MINSIZE                    262144
CAT_CACHE_SUPPLY                      131072
INIT_ALLOCATORSIZE                    262144
ALLOW_MULTIPLE_SERVERTASK_UKTS        NO
_TASKCLUSTER_01                       tw;al;ut;2000*sv,100*bup;10*ev,10*gc;
_TASKCLUSTER_02                       ti,100*dw;63*us;
_TASKCLUSTER_03                       equalize
_DYN_TASK_STACK                       NO
_MP_RGN_QUEUE                         YES
_MP_RGN_DIRTY_READ                    DEFAULT
_MP_RGN_BUSY_WAIT                     DEFAULT
_MP_DISP_LOOPS                        2
_MP_DISP_PRIO                         DEFAULT
MP_RGN_LOOP                           -1
_MP_RGN_PRIO                          DEFAULT
MAXRGN_REQUEST                        -1
_PRIO_BASE_U2U                        100
_PRIO_BASE_IOC                        80
_PRIO_BASE_RAV                        80
_PRIO_BASE_REX                        40
_PRIO_BASE_COM                        10
_PRIO_FACTOR                          80
_DELAY_COMMIT                         NO
_MAXTASK_STACK                        512
MAX_SERVERTASK_STACK                  500
MAX_SPECIALTASK_STACK                 500
_DW_IO_AREA_SIZE                      50
_DW_IO_AREA_FLUSH                     50
FBM_VOLUME_COMPRESSION                50
FBM_VOLUME_BALANCE                    10
_FBM_LOW_IO_RATE                      10
CACHE_SIZE                            262144
_DW_LRU_TAIL_FLUSH                    25
XP_DATA_CACHE_RGNS                    0
_DATA_CACHE_RGNS                      64
XP_CONVERTER_REGIONS                  0
CONVERTER_REGIONS                     8
XP_MAXPAGER                           0
MAXPAGER                              64
SEQUENCE_CACHE                        1
_IDXFILE_LIST_SIZE                    2048
VOLUMENO_BIT_COUNT                    8
OPTIM_MAX_MERGE                       500
OPTIM_INV_ONLY                        YES
OPTIM_CACHE                           NO
OPTIM_JOIN_FETCH                      0
JOIN_SEARCH_LEVEL                     0
JOIN_MAXTAB_LEVEL4                    16
JOIN_MAXTAB_LEVEL9                    5
_READAHEAD_BLOBS                      32
CLUSTER_WRITE_THRESHOLD               80
CLUSTERED_LOBS                        NO
RUNDIRECTORY                          /var/opt/sdb/data/wrk/SPDT
OPMSG1                                /dev/console
OPMSG2                                /dev/null
_KERNELDIAGFILE                       knldiag
KERNELDIAGSIZE                        800
_EVENTFILE                            knldiag.evt
_EVENTSIZE                            0
_MAXEVENTTASKS                        2
_MAXEVENTS                            100
_KERNELTRACEFILE                      knltrace
TRACE_PAGES_TI                        2
TRACE_PAGES_GC                        20
TRACE_PAGES_LW                        5
TRACE_PAGES_PG                        3
TRACE_PAGES_US                        10
TRACE_PAGES_UT                        5
TRACE_PAGES_SV                        5
TRACE_PAGES_EV                        2
TRACE_PAGES_BUP                       0
KERNELTRACESIZE                       5369
EXTERNAL_DUMP_REQUEST                 NO
_AK_DUMP_ALLOWED                      YES
_KERNELDUMPFILE                       knldump
_RTEDUMPFILE                          rtedump
_UTILITY_PROTFILE                     dbm.utl
UTILITY_PROTSIZE                      100
_BACKUP_HISTFILE                      dbm.knl
_BACKUP_MED_DEF                       dbm.mdf
_MAX_MESSAGE_FILES                    0
_SHMKERNEL                            44601
__PARAM_CHANGED___                    0
__PARAM_VERIFIED__                    2008-05-03 23:12:55
DIAG_HISTORY_NUM                      2
DIAG_HISTORY_PATH                     /var/opt/sdb/data/wrk/SPDT/DIAGHISTORY
_DIAG_SEM                             1
SHOW_MAX_STACK_USE                    NO
SHOW_MAX_KB_STACK_USE                 NO
LOG_SEGMENT_SIZE                      2133
_COMMENT
SUPPRESS_CORE                         YES
FORMATTING_MODE                       PARALLEL
FORMAT_DATAVOLUME                     YES
OFFICIAL_NODE
UKT_CPU_RELATIONSHIP                  NONE
HIRES_TIMER_TYPE                      CPU
LOAD_BALANCING_CHK                    30
LOAD_BALANCING_DIF                    10
LOAD_BALANCING_EQ                     5
HS_STORAGE_DLL                        libhsscopy
HS_SYNC_INTERVAL                      50
USE_OPEN_DIRECT                       YES
USE_OPEN_DIRECT_FOR_BACKUP            NO
SYMBOL_DEMANGLING                     NO
EXPAND_COM_TRACE                      NO
JOIN_TABLEBUFFER                      128
SET_VOLUME_LOCK                       YES
SHAREDSQL                             YES
SHAREDSQL_CLEANUPTHRESHOLD            25
SHAREDSQL_COMMANDCACHESIZE            262144
MEMORY_ALLOCATION_LIMIT               0
USE_SYSTEM_PAGE_CACHE                 YES
USE_COROUTINES                        YES
FORBID_LOAD_BALANCING                 YES
MIN_RETENTION_TIME                    60
MAX_RETENTION_TIME                    480
MAX_SINGLE_HASHTABLE_SIZE             512
MAX_HASHTABLE_MEMORY                  5120
ENABLE_CHECK_INSTANCE                 YES
RTE_TEST_REGIONS                      0
HASHED_RESULTSET                      YES
HASHED_RESULTSET_CACHESIZE            262144
CHECK_HASHED_RESULTSET                0
AUTO_RECREATE_BAD_INDEXES             NO
AUTHENTICATION_ALLOW
AUTHENTICATION_DENY
TRACE_AK                              NO
TRACE_DEFAULT                         NO
TRACE_DELETE                          NO
TRACE_INDEX                           NO
TRACE_INSERT                          NO
TRACE_LOCK                            NO
TRACE_LONG                            NO
TRACE_OBJECT                          NO
TRACE_OBJECT_ADD                      NO
TRACE_OBJECT_ALTER                    NO
TRACE_OBJECT_FREE                     NO
TRACE_OBJECT_GET                      NO
TRACE_OPTIMIZE                        NO
TRACE_ORDER                           NO
TRACE_ORDER_STANDARD                  NO
TRACE_PAGES                           NO
TRACE_PRIMARY_TREE                    NO
TRACE_SELECT                          NO
TRACE_TIME                            NO
TRACE_UPDATE                          NO
TRACE_STOP_ERRORCODE                  0
TRACE_ALLOCATOR                       0
TRACE_CATALOG                         0
TRACE_CLIENTKERNELCOM                 0
TRACE_COMMON                          0
TRACE_COMMUNICATION                   0
TRACE_CONVERTER                       0
TRACE_DATACHAIN                       0
TRACE_DATACACHE                       0
TRACE_DATAPAM                         0
TRACE_DATATREE                        0
TRACE_DATAINDEX                       0
TRACE_DBPROC                          0
TRACE_FBM                             0
TRACE_FILEDIR                         0
TRACE_FRAMECTRL                       0
TRACE_IOMAN                           0
TRACE_IPC                             0
TRACE_JOIN                            0
TRACE_KSQL                            0
TRACE_LOGACTION                       0
TRACE_LOGHISTORY                      0
TRACE_LOGPAGE                         0
TRACE_LOGTRANS                        0
TRACE_LOGVOLUME                       0
TRACE_MEMORY                          0
TRACE_MESSAGES                        0
TRACE_OBJECTCONTAINER                 0
TRACE_OMS_CONTAINERDIR                0
TRACE_OMS_CONTEXT                     0
TRACE_OMS_ERROR                       0
TRACE_OMS_FLUSHCACHE                  0
TRACE_OMS_INTERFACE                   0
TRACE_OMS_KEY                         0
TRACE_OMS_KEYRANGE                    0
TRACE_OMS_LOCK                        0
TRACE_OMS_MEMORY                      0
TRACE_OMS_NEWOBJ                      0
TRACE_OMS_SESSION                     0
TRACE_OMS_STREAM                      0
TRACE_OMS_VAROBJECT                   0
TRACE_OMS_VERSION                     0
TRACE_PAGER                           0
TRACE_RUNTIME                         0
TRACE_SHAREDSQL                       0
TRACE_SQLMANAGER                      0
TRACE_SRVTASKS                        0
TRACE_SYNCHRONISATION                 0
TRACE_SYSVIEW                         0
TRACE_TABLE                           0
TRACE_VOLUME                          0
CHECK_BACKUP                          NO
CHECK_DATACACHE                       NO
CHECK_KB_REGIONS                      NO
CHECK_LOCK                            NO
CHECK_LOCK_SUPPLY                     NO
CHECK_REGIONS                         NO
CHECK_TASK_SPECIFIC_CATALOGCACHE      NO
CHECK_TRANSLIST                       NO
CHECK_TREE                            NO
CHECK_TREE_LOCKS                      NO
CHECK_COMMON                          0
CHECK_CONVERTER                       0
CHECK_DATAPAGELOG                     0
CHECK_DATAINDEX                       0
CHECK_FBM                             0
CHECK_IOMAN                           0
CHECK_LOGHISTORY                      0
CHECK_LOGPAGE                         0
CHECK_LOGTRANS                        0
CHECK_LOGVOLUME                       0
CHECK_SRVTASKS                        0
OPTIMIZE_AGGREGATION                  YES
OPTIMIZE_FETCH_REVERSE                YES
OPTIMIZE_STAR_JOIN                    YES
OPTIMIZE_JOIN_ONEPHASE                YES
OPTIMIZE_JOIN_OUTER                   YES
OPTIMIZE_MIN_MAX                      YES
OPTIMIZE_FIRST_ROWS                   YES
OPTIMIZE_OPERATOR_JOIN                YES
OPTIMIZE_JOIN_HASHTABLE               YES
OPTIMIZE_JOIN_HASH_MINIMAL_RATIO      1
OPTIMIZE_OPERATOR_JOIN_COSTFUNC      YES
OPTIMIZE_JOIN_PARALLEL_MINSIZE        1000000
OPTIMIZE_JOIN_PARALLEL_SERVERS        0
OPTIMIZE_JOIN_OPERATOR_SORT           YES
OPTIMIZE_QUAL_ON_INDEX                YES
DDLTRIGGER                            YES
SUBTREE_LOCKS                         NO
MONITOR_READ                          2147483647
MONITOR_TIME                          2147483647
MONITOR_SELECTIVITY                   0
MONITOR_ROWNO                         0
CALLSTACKLEVEL                        0
OMS_RUN_IN_UDE_SERVER                 NO
OPTIMIZE_QUERYREWRITE                 OPERATOR
TRACE_QUERYREWRITE                    0
CHECK_QUERYREWRITE                    0
PROTECT_DATACACHE_MEMORY              NO
LOCAL_REDO_LOG_BUFFER_SIZE            0
FILEDIR_SPINLOCKPOOL_SIZE             10
TRANS_HISTORY_SIZE                    0
TRANS_THRESHOLD_VALUE                 60
ENABLE_SYSTEM_TRIGGERS                YES
DBFILLINGABOVELIMIT                   70L80M85M90H95H96H97H98H99H
DBFILLINGBELOWLIMIT                   70L80L85L90L95L
LOGABOVELIMIT                         50L75L90M95M96H97H98H99H
AUTOSAVE                              1
BACKUPRESULT                          1
CHECKDATA                             1
EVENT                                 1
ADMIN                                 1
ONLINE                                1
UPDSTATWANTED                         1
OUTOFSESSIONS                         3
ERROR                                 3
SYSTEMERROR                           3
DATABASEFULL                          1
LOGFULL                               1
LOGSEGMENTFULL                        1
STANDBY                               1
USESELECTFETCH                        YES
USEVARIABLEINPUT                      NO
UPDATESTAT_PARALLEL_SERVERS           0
UPDATESTAT_SAMPLE_ALGO                1
SIMULATE_VECTORIO                     IF_OPEN_DIRECT_OR_RAW_DEVICE
COLUMNCOMPRESSION                     YES
TIME_MEASUREMENT                      NO
CHECK_TABLE_WIDTH                     NO
MAX_MESSAGE_LIST_LENGTH               100
SYMBOL_RESOLUTION                     YES
PREALLOCATE_IOWORKER                  NO
CACHE_IN_SHARED_MEMORY                NO
INDEX_LEAF_CACHING                    2
NO_SYNC_TO_DISK_WANTED                NO
SPINLOCK_LOOP_COUNT                   30000
SPINLOCK_BACKOFF_BASE                 1
SPINLOCK_BACKOFF_FACTOR               2
SPINLOCK_BACKOFF_MAXIMUM              64
ROW_LOCKS_PER_TRANSACTION             50
USEUNICODECOLUMNCOMPRESSION           NO
about send you the data from tables, i dont have permission to do that, since all data is in a production system, the customer dont give me the rights to send any information. sorry about that.
best regards
Clóvis

Deleting and or moving multiple adhoc/SAP queries in one go.

Hi,
I am wondering whether anyone knows of a method to deleting multiple SAP queries in a single go. I would also like to be able to bulk move queries from one user group to another. We are having a wholesale clear-up of queries and the thought of having to do each one individually is scary!
Many thanks in advance

To delete queries belonged to a user group, you can use SQ02 - GoTo - Query Directory, then key in the desired user group and execute. From the output list of this, you can select all queries and click on 'Delete Select Queries' .

How to cancel the alter or delete purview for one's scheme table?

I want to put down the user of some scheme table that is altered or deleted the field of its. But the scheme has the RESOURCE and CONNECT role for the user. I want to control the user can't delete or alter the table field.
How can to do ? urgent!!
Please tell me?
regard.

I'm not sure I understand your question correctly. Are you looking to audit the DDL a particular user issues or are you looking to prevent that user from issuing certain types of DDL?
Justin

Deleting data from a table where there are no indexes on the table

Hi
We have one interface program for one time process.When I was testing the process it was taking too much time to load the data around 1000 records.
it happens in 2 steps
1 puts into stage table
2 puts into base table
in the process/package I have delete statement that deletes data from stage table before each process.
Stage table did not have any indexes but the base table has(obvisiosly)
any idea?
please help me on this.
Thanks,
Y

Hi,
Please post the application/database details along with the OS.
Is this interface program a seeded or custom one?
Please enable trace on this concurrent program as per (Note: 296559.1 - FAQ: Common Tracing Techniques within the Oracle Applications 11i/R12) and generate the TKPROF to find out why it takes that long to load/delete the data.
Thanks,
Hussein

Reg:How to delete the column in table control also from database table.

Hi Experts,
Once again thank u all for giving the responses.
one more doubt is how to delete the columns of table control and also the record shold delete from ztable.
With Regards,
Saroja.P.

Hi,
If you want to delete the rows in the table control and simultaneously delete it from the database table, then you can implement a 'DELETE' functionality specific to your table control. Have a MARK field (you will find that in the screen attributes of the table control -> give a name for the MARK field, you will find an additional MARK column at the beginning of your table control). You can check whatever rows you want to delete from the table control, call the delete module.
"This portion of code inside the LOOP...ENDLOOP.
IF sy-ucomm eq 'F_DELETE'.
gt_itab2-check = mark. " Store the MARK field status into your internal table's correspoding field 'check'
MODIFY gt_itab INDEX tabcontrol-current_line.
ENDIF.
iF sy-ucomm eq 'DELETE1'.
DELETE gt_itab WHERE check eq 'X'. "Your internal table does not have rows that you want to delete
ENDIF.
Now you can modify your database table using the MODIFY statement.
MODIFY ZDB FROM TABLE gt_itab.

Creating SQL-Loader script for more than one table at a time

Hi,
I am using OMWB 2.0.2.0.0 with Oracle 8.1.7 and Sybase 11.9.
It looks like I can create SQL-Loader scripts for all the tables
or for one table at a time. If I want to create SQL-Loader
scripts for 5-6 tables, I have to either create script for all
the tables and then delete the unwanted tables or create the
scripts for one table at a time and then merge them.
Is there a simple way to create migration scripts for more than
one but not all tables at a time?
Thanks,
Prashant Rane

No there is no multi-select for creating SQL-Loader scripts.
You can either create them separately or create them all and
then discard the one you do not need.

Moving time-dependant data from one table to another (archiving)

Hello all
I would like to know if there's an easier solution or a "best practice" to move data from one table to another. The context of this issue can be found within "archiving".
More concretely: we have an application that uses several tables to log information to.
These tables are growing like crazy, and we would like to keep only "relevant" data in those tables, so I was thinking about moving data from these tables that have been in there for, say 2 months, to "archiving" tables.
I figured there must be some kind of "best practice" to get this done.
I have already written a procedure that loops the table that has the time indicator and inserts the records from the normal tables into the archive tables (and afterwards delete this data), but it seems to be taking ages to get it done.
Thanks in advance!
Message was edited by:
timschraepen

There is nothing to do with PL/SQL.
You can refer below links:
http://www.lc.leidenuniv.nl/awcourse/oracle/server.920/a96524/c12parti.htm
http://www.stanford.edu/dept/itss/docs/oracle/10g/server.101/b10739/partiti.htm#i1006727

Moving data from one table to another

Hi,
I havent done CF in a log time and i have a question,
My client has an admin site for his inventory in a db (MS SQL) one of the table (inventory) has 180 fields (which are options for the items) with around 100 records that are being added/deleted per week, he now whants to keep the deleted data has reference to what happened to them.
What i want to do is move all the data berofe deleting the record of Inventory to inventory_deleted without having to specify all the 180 fields name to be moved :-)   yep lazy
I already copied the table without the data all i need is some sort of query to move invetory_deleted before I delete it from inventory
I'v tryed adding a active/deleted field to the table, but this is a huge site and it causes to many problems everywhere else when showing data, stats ...etc
here is the delete code :-)
<cfquery datasource="#clientds#">
      DELETE FROM inventory
      WHERE inv_number=#form.inv_num#
    </cfquery>
and this is what i tested so far
<cfquery datasource="#clientds">
insert into inventory_deleted (*)
select *
from inventory
WHERE inv_number=#form.inv_num#
</cfquery>
Help would be really apreciated

Not i get what you mean by nothing but this is what i did
<cfquery datasource="autoavantage" name="insertdata">
insert into inventory_deleted (*) select * from inventory where inv_num = #inv_num#
</cfquery>
and this is the error i got
Error Executing Database Query.
[Macromedia][SequeLink JDBC Driver][ODBC Socket][Microsoft][ODBC Microsoft Access Driver] Syntax error in INSERT INTO statement.

Concurrent delete queries on one table

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