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on IMPORT SQL0437W Performance of this complex query may be sub-optimal

10 New Member
Hello everyone,

i have a big problem with imports. I have only see this problem on 9.5, i have never goten it on 9.1.

99% of time db2 works great ( version 9.5 fixpack 5 ) on windows 2008 ( microsoft cluster solution ).

When we do imports we get the following error ( once in a while ... but it is frequent enough to worry us ).

Error from log:
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  1. 16.09.2010 15:17:32.679 -> MBSCPTU : Running command = CALL ADMIN_CMD('IMPORT FROM \\10.1.18.147\d$\MBS\HIPERM\VERSION\SERVER\REPLIKACIJA\MBSCPTU\IDPODATKINABLAGAJNI.IXF OF IXF LOBS FROM \\10.1.18.147\d$\MBS\HIPERM\VERSION\SERVER\REPLIKACIJA\MBSCPTU MODIFIED BY LOBSINFILE METHOD N (IDPOBL_ID,IDTBLA_ID,IDSKLA_ID,IDPOBL_TABELA,IDPOBL_DATUM,IDPOBL_STEVILOVRSTIC,IDPOBL_STEVILOSYSDANES,IDPOBL_SUMPK,IDPOBL_PRENESENO,SYS_UPORABNIK,SYS_HANDLER,SYS_SPREMEMBA,SYS_VERZIJA) MESSAGES ON SERVER INSERT_UPDATE INTO EMGSYS.IDPODATKINABLAGAJNI (IDPOBL_ID,IDTBLA_ID,IDSKLA_ID,IDPOBL_TABELA,IDPOBL_DATUM,IDPOBL_STEVILOVRSTIC,IDPOBL_STEVILOSYSDANES,IDPOBL_SUMPK,IDPOBL_PRENESENO,SYS_UPORABNIK,SYS_HANDLER,SYS_SPREMEMBA,SYS_VERZIJA)')
  2. 16.09.2010 15:17:32.710 -> MBSCPTU : WARNING = COM.ibm.db2.jdbc.app.DB2Warning: [IBM][CLI Driver][DB2/NT64] SQL20397W  Routine "SYSPROC.ADMIN_CMD" execution has completed, but at least one error, "SQL3037", was encountered during the execution. More information is available.
  3.  
  4. 16.09.2010 15:17:32.710 -> MBSCPTU : #################### WARNING ############################
  5. 16.09.2010 15:17:32.710 -> MBSCPTU : Number of rows read         = 0
  6. 16.09.2010 15:17:32.710 -> MBSCPTU : Number of rows skipped      = 0
  7. 16.09.2010 15:17:32.710 -> MBSCPTU : Number of rows inserted     = 0
  8. 16.09.2010 15:17:32.710 -> MBSCPTU : Number of rows updated      = 0
  9. 16.09.2010 15:17:32.710 -> MBSCPTU : Number of rows rejected     = 0
  10. 16.09.2010 15:17:32.710 -> MBSCPTU : Number of rows committed    = 0
  11. 16.09.2010 15:17:32.726 -> MBSCPTU : SQL0437W = Performance of this complex query may be sub-optimal.  Reason code: "1".  SQLSTATE=01602
  12.  

Please advise. Nothing in db2diaglog.

I have changed instance memory to maximum, also set it to automatic... I have changed appl_memory to maximum and to automatic, same with database memory parameter.

Current parameters ( DBM ):
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  1.  
  2.  
  3.           Database Manager Configuration
  4.  
  5.  
  6.  
  7.      Node type = Enterprise Server Edition with local and remote clients
  8.  
  9.  
  10.  
  11.  Database manager configuration release level            = 0x0c00
  12.  
  13.  
  14.  
  15.  Maximum total of files open               (MAXTOTFILOP) = 16000
  16.  
  17.  CPU speed (millisec/instruction)             (CPUSPEED) = 4,093650e-007
  18.  
  19.  Communications bandwidth (MB/sec)      (COMM_BANDWIDTH) = 1,000000e+002
  20.  
  21.  
  22.  
  23.  Max number of concurrently active databases     (NUMDB) = 64
  24.  
  25.  Federated Database System Support           (FEDERATED) = YES
  26.  
  27.  Transaction processor monitor name        (TP_MON_NAME) = 
  28.  
  29.  
  30.  
  31.  Default charge-back account           (DFT_ACCOUNT_STR) = 
  32.  
  33.  
  34.  
  35.  Java Development Kit installation path       (JDK_PATH) = C:\PROGRA~1\IBM\SQLLIB\java\jdk
  36.  
  37.  
  38.  
  39.  Diagnostic error capture level              (DIAGLEVEL) = 3
  40.  
  41.  Notify Level                              (NOTIFYLEVEL) = 3
  42.  
  43.  Diagnostic data directory path               (DIAGPATH) = 
  44.  
  45.  
  46.  
  47.  Default database monitor switches
  48.  
  49.    Buffer pool                         (DFT_MON_BUFPOOL) = OFF
  50.  
  51.    Lock                                   (DFT_MON_LOCK) = ON
  52.  
  53.    Sort                                   (DFT_MON_SORT) = OFF
  54.  
  55.    Statement                              (DFT_MON_STMT) = OFF
  56.  
  57.    Table                                 (DFT_MON_TABLE) = OFF
  58.  
  59.    Timestamp                         (DFT_MON_TIMESTAMP) = OFF
  60.  
  61.    Unit of work                            (DFT_MON_UOW) = OFF
  62.  
  63.  Monitor health of instance and databases   (HEALTH_MON) = OFF
  64.  
  65.  
  66.  
  67.  SYSADM group name                        (SYSADM_GROUP) = 
  68.  
  69.  SYSCTRL group name                      (SYSCTRL_GROUP) = 
  70.  
  71.  SYSMAINT group name                    (SYSMAINT_GROUP) = 
  72.  
  73.  SYSMON group name                        (SYSMON_GROUP) = 
  74.  
  75.  
  76.  
  77.  Client Userid-Password Plugin          (CLNT_PW_PLUGIN) = 
  78.  
  79.  Client Kerberos Plugin                (CLNT_KRB_PLUGIN) = IBMkrb5
  80.  
  81.  Group Plugin                             (GROUP_PLUGIN) = 
  82.  
  83.  GSS Plugin for Local Authorization    (LOCAL_GSSPLUGIN) = 
  84.  
  85.  Server Plugin Mode                    (SRV_PLUGIN_MODE) = UNFENCED
  86.  
  87.  Server List of GSS Plugins      (SRVCON_GSSPLUGIN_LIST) = 
  88.  
  89.  Server Userid-Password Plugin        (SRVCON_PW_PLUGIN) = 
  90.  
  91.  Server Connection Authentication          (SRVCON_AUTH) = NOT_SPECIFIED
  92.  
  93.  Cluster manager                           (CLUSTER_MGR) = 
  94.  
  95.  
  96.  
  97.  Database manager authentication        (AUTHENTICATION) = SERVER
  98.  
  99.  Cataloging allowed without authority   (CATALOG_NOAUTH) = NO
  100.  
  101.  Trust all clients                      (TRUST_ALLCLNTS) = YES
  102.  
  103.  Trusted client authentication          (TRUST_CLNTAUTH) = CLIENT
  104.  
  105.  Bypass federated authentication            (FED_NOAUTH) = NO
  106.  
  107.  
  108.  
  109.  Default database path                       (DFTDBPATH) = G:
  110.  
  111.  
  112.  
  113.  Database monitor heap size (4KB)          (MON_HEAP_SZ) = 16384
  114.  
  115.  Java Virtual Machine heap size (4KB)     (JAVA_HEAP_SZ) = 2048
  116.  
  117.  Audit buffer size (4KB)                  (AUDIT_BUF_SZ) = 0
  118.  
  119.  Size of instance shared memory (4KB)  (INSTANCE_MEMORY) = AUTOMATIC(62359672)
  120.  
  121.  Backup buffer default size (4KB)            (BACKBUFSZ) = 1024
  122.  
  123.  Restore buffer default size (4KB)           (RESTBUFSZ) = 1024
  124.  
  125.  
  126.  
  127.  Agent stack size                       (AGENT_STACK_SZ) = 31
  128.  
  129.  Minimum committed private memory (4KB)   (MIN_PRIV_MEM) = 32
  130.  
  131.  Private memory threshold (4KB)        (PRIV_MEM_THRESH) = 20000
  132.  
  133.  
  134.  
  135.  Sort heap threshold (4KB)                  (SHEAPTHRES) = 0
  136.  
  137.  
  138.  
  139.  Directory cache support                     (DIR_CACHE) = YES
  140.  
  141.  
  142.  
  143.  Application support layer heap size (4KB)   (ASLHEAPSZ) = 32
  144.  
  145.  Max requester I/O block size (bytes)         (RQRIOBLK) = 32767
  146.  
  147.  Query heap size (4KB)                   (QUERY_HEAP_SZ) = 1000
  148.  
  149.  
  150.  
  151.  Workload impact by throttled utilities(UTIL_IMPACT_LIM) = 50
  152.  
  153.  
  154.  
  155.  Priority of agents                           (AGENTPRI) = SYSTEM
  156.  
  157.  Agent pool size                        (NUM_POOLAGENTS) = 100
  158.  
  159.  Initial number of agents in pool       (NUM_INITAGENTS) = 0
  160.  
  161.  Max number of coordinating agents     (MAX_COORDAGENTS) = AUTOMATIC(1500)
  162.  
  163.  Max number of client connections      (MAX_CONNECTIONS) = AUTOMATIC(MAX_COORDAGENTS)
  164.  
  165.  
  166.  
  167.  Keep fenced process                        (KEEPFENCED) = YES
  168.  
  169.  Number of pooled fenced processes         (FENCED_POOL) = 1500
  170.  
  171.  Initial number of fenced processes     (NUM_INITFENCED) = 0
  172.  
  173.  
  174.  
  175.  Index re-creation time and redo index build  (INDEXREC) = RESTART
  176.  
  177.  
  178.  
  179.  Transaction manager database name         (TM_DATABASE) = 1ST_CONN
  180.  
  181.  Transaction resync interval (sec)     (RESYNC_INTERVAL) = 180
  182.  
  183.  
  184.  
  185.  SPM name                                     (SPM_NAME) = MBSHIP2
  186.  
  187.  SPM log size                          (SPM_LOG_FILE_SZ) = 256
  188.  
  189.  SPM resync agent limit                 (SPM_MAX_RESYNC) = 20
  190.  
  191.  SPM log path                             (SPM_LOG_PATH) = 
  192.  
  193.  
  194.  
  195.  NetBIOS Workstation name                        (NNAME) = 
  196.  
  197.  
  198.  
  199.  TCP/IP Service name                          (SVCENAME) = db2c_DB2
  200.  
  201.  Discovery mode                               (DISCOVER) = SEARCH
  202.  
  203.  Discover server instance                (DISCOVER_INST) = ENABLE
  204.  
  205.  
  206.  
  207.  Maximum query degree of parallelism   (MAX_QUERYDEGREE) = 1
  208.  
  209.  Enable intra-partition parallelism     (INTRA_PARALLEL) = NO
  210.  
  211.  
  212.  
  213.  Maximum Asynchronous TQs per query    (FEDERATED_ASYNC) = 0
  214.  
  215.  
  216.  
  217.  No. of int. communication buffers(4KB)(FCM_NUM_BUFFERS) = 4096
  218.  
  219.  No. of int. communication channels   (FCM_NUM_CHANNELS) = AUTOMATIC(2048)
  220.  
  221.  Node connection elapse time (sec)         (CONN_ELAPSE) = 10
  222.  
  223.  Max number of node connection retries (MAX_CONNRETRIES) = 5
  224.  
  225.  Max time difference between nodes (min) (MAX_TIME_DIFF) = 60
  226.  
  227.  
  228.  
  229.  db2start/db2stop timeout (min)        (START_STOP_TIME) = 10
  230.  
DB CFG:
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  1.  
  2.  
  3.        Database Configuration for Database 
  4.  
  5.  
  6.  
  7.  Database configuration release level                    = 0x0c00
  8.  
  9.  Database release level                                  = 0x0c00
  10.  
  11.  
  12.  
  13.  Database territory                                      = si
  14.  
  15.  Database code page                                      = 1208
  16.  
  17.  Database code set                                       = UTF-8
  18.  
  19.  Database country/region code                            = 386
  20.  
  21.  Database collating sequence                             = IDENTITY
  22.  
  23.  Alternate collating sequence              (ALT_COLLATE) = 
  24.  
  25.  Number compatibility                                    = OFF
  26.  
  27.  Varchar2 compatibility                                  = OFF
  28.  
  29.  Database page size                                      = 4096
  30.  
  31.  
  32.  
  33.  Dynamic SQL Query management           (DYN_QUERY_MGMT) = DISABLE
  34.  
  35.  
  36.  
  37.  Discovery support for this database       (DISCOVER_DB) = ENABLE
  38.  
  39.  
  40.  
  41.  Restrict access                                         = NO
  42.  
  43.  Default query optimization class         (DFT_QUERYOPT) = 5
  44.  
  45.  Degree of parallelism                      (DFT_DEGREE) = 1
  46.  
  47.  Continue upon arithmetic exceptions   (DFT_SQLMATHWARN) = NO
  48.  
  49.  Default refresh age                   (DFT_REFRESH_AGE) = 0
  50.  
  51.  Default maintained table types for opt (DFT_MTTB_TYPES) = SYSTEM
  52.  
  53.  Number of frequent values retained     (NUM_FREQVALUES) = 10
  54.  
  55.  Number of quantiles retained            (NUM_QUANTILES) = 20
  56.  
  57.  
  58.  
  59.  Decimal floating point rounding mode  (DECFLT_ROUNDING) = ROUND_HALF_EVEN
  60.  
  61.  
  62.  
  63.  Backup pending                                          = NO
  64.  
  65.  
  66.  
  67.  Database is consistent                                  = NO
  68.  
  69.  Rollforward pending                                     = NO
  70.  
  71.  Restore pending                                         = NO
  72.  
  73.  
  74.  
  75.  Multi-page file allocation enabled                      = NO
  76.  
  77.  
  78.  
  79.  Log retain for recovery status                          = RECOVERY
  80.  
  81.  User exit for logging status                            = YES
  82.  
  83.  
  84.  
  85.  Self tuning memory                    (SELF_TUNING_MEM) = OFF
  86.  
  87.  Size of database shared memory (4KB)  (DATABASE_MEMORY) = 30063408
  88.  
  89.  Database memory threshold               (DB_MEM_THRESH) = 10
  90.  
  91.  Max storage for lock list (4KB)              (LOCKLIST) = 250000
  92.  
  93.  Percent. of lock lists per application       (MAXLOCKS) = 97
  94.  
  95.  Package cache size (4KB)                   (PCKCACHESZ) = 327680
  96.  
  97.  Sort heap thres for shared sorts (4KB) (SHEAPTHRES_SHR) = 65536
  98.  
  99.  Sort list heap (4KB)                         (SORTHEAP) = 131072
  100.  
  101.  
  102.  
  103.  Database heap (4KB)                            (DBHEAP) = 524288
  104.  
  105.  Catalog cache size (4KB)              (CATALOGCACHE_SZ) = AUTOMATIC
  106.  
  107.  Log buffer size (4KB)                        (LOGBUFSZ) = 150
  108.  
  109.  Utilities heap size (4KB)                (UTIL_HEAP_SZ) = 262144
  110.  
  111.  Buffer pool size (pages)                     (BUFFPAGE) = 6000
  112.  
  113.  SQL statement heap (4KB)                     (STMTHEAP) = AUTOMATIC(128000)
  114.  
  115.  Default application heap (4KB)             (APPLHEAPSZ) = AUTOMATIC(16384)
  116.  
  117.  Application Memory Size (4KB)             (APPL_MEMORY) = AUTOMATIC(524288)
  118.  
  119.  Statistics heap size (4KB)               (STAT_HEAP_SZ) = AUTOMATIC(65536)
  120.  
  121.  
  122.  
  123.  Interval for checking deadlock (ms)         (DLCHKTIME) = 10000
  124.  
  125.  Lock timeout (sec)                        (LOCKTIMEOUT) = -1
  126.  
  127.  
  128.  
  129.  Changed pages threshold                (CHNGPGS_THRESH) = 80
  130.  
  131.  Number of asynchronous page cleaners   (NUM_IOCLEANERS) = AUTOMATIC(23)
  132.  
  133.  Number of I/O servers                   (NUM_IOSERVERS) = AUTOMATIC(3)
  134.  
  135.  Index sort flag                             (INDEXSORT) = YES
  136.  
  137.  Sequential detect flag                      (SEQDETECT) = YES
  138.  
  139.  Default prefetch size (pages)         (DFT_PREFETCH_SZ) = AUTOMATIC
  140.  
  141.  
  142.  
  143.  Track modified pages                         (TRACKMOD) = ON
  144.  
  145.  
  146.  
  147.  Default number of containers                            = 1
  148.  
  149.  Default tablespace extentsize (pages)   (DFT_EXTENT_SZ) = 32
  150.  
  151.  
  152.  
  153.  Max number of active applications            (MAXAPPLS) = 1500
  154.  
  155.  Average number of active applications       (AVG_APPLS) = 15
  156.  
  157.  Max DB files open per application            (MAXFILOP) = 65535
  158.  
  159.  
  160.  
  161.  Log file size (4KB)                         (LOGFILSIZ) = 16384
  162.  
  163.  Number of primary log files                (LOGPRIMARY) = 210
  164.  
  165.  Number of secondary log files               (LOGSECOND) = 25
  166.  
  167.  Changed path to log files                  (NEWLOGPATH) = 
  168.  
  169.  Path to log files                                       = W:\HIPERM\logs\NODE0000\NODE0000\
  170.  
  171.  Overflow log path                     (OVERFLOWLOGPATH) = 
  172.  
  173.  Mirror log path                         (MIRRORLOGPATH) = 
  174.  
  175.  First active log file                                   = S0417772.LOG
  176.  
  177.  Block log on disk full                (BLK_LOG_DSK_FUL) = NO
  178.  
  179.  Block non logged operations            (BLOCKNONLOGGED) = NO
  180.  
  181.  Percent max primary log space by transaction  (MAX_LOG) = 0
  182.  
  183.  Num. of active log files for 1 active UOW(NUM_LOG_SPAN) = 0
  184.  
  185.  
  186.  
  187.  Group commit count                          (MINCOMMIT) = 1
  188.  
  189.  Percent log file reclaimed before soft chckpt (SOFTMAX) = 440
  190.  
  191.  Log retain for recovery enabled             (LOGRETAIN) = RECOVERY
  192.  
  193.  User exit for logging enabled                (USEREXIT) = OFF
  194.  
  195.  
  196.  
  197.  HADR database role                                      = STANDARD
  198.  
  199.  HADR local host name                  (HADR_LOCAL_HOST) = 
  200.  
  201.  HADR local service name                (HADR_LOCAL_SVC) = 
  202.  
  203.  HADR remote host name                (HADR_REMOTE_HOST) = 
  204.  
  205.  HADR remote service name              (HADR_REMOTE_SVC) = 
  206.  
  207.  HADR instance name of remote server  (HADR_REMOTE_INST) = 
  208.  
  209.  HADR timeout value                       (HADR_TIMEOUT) = 120
  210.  
  211.  HADR log write synchronization mode     (HADR_SYNCMODE) = NEARSYNC
  212.  
  213.  HADR peer window duration (seconds)  (HADR_PEER_WINDOW) = 0
  214.  
  215.  
  216.  
  217.  First log archive method                 (LOGARCHMETH1) = TSM
  218.  
  219.  Options for logarchmeth1                  (LOGARCHOPT1) = 
  220.  
  221.  Second log archive method                (LOGARCHMETH2) = OFF
  222.  
  223.  Options for logarchmeth2                  (LOGARCHOPT2) = 
  224.  
  225.  Failover log archive path                (FAILARCHPATH) = 
  226.  
  227.  Number of log archive retries on error   (NUMARCHRETRY) = 5
  228.  
  229.  Log archive retry Delay (secs)         (ARCHRETRYDELAY) = 20
  230.  
  231.  Vendor options                              (VENDOROPT) = 
  232.  
  233.  
  234.  
  235.  Auto restart enabled                      (AUTORESTART) = ON
  236.  
  237.  Index re-creation time and redo index build  (INDEXREC) = SYSTEM (RESTART)
  238.  
  239.  Log pages during index build            (LOGINDEXBUILD) = OFF
  240.  
  241.  Default number of loadrec sessions    (DFT_LOADREC_SES) = 1
  242.  
  243.  Number of database backups to retain   (NUM_DB_BACKUPS) = 12
  244.  
  245.  Recovery history retention (days)     (REC_HIS_RETENTN) = 366
  246.  
  247.  Auto deletion of recovery objects    (AUTO_DEL_REC_OBJ) = OFF
  248.  
  249.  
  250.  
  251.  TSM management class                    (TSM_MGMTCLASS) = 
  252.  
  253.  TSM node name                            (TSM_NODENAME) = 
  254.  
  255.  TSM owner                                   (TSM_OWNER) = 
  256.  
  257.  TSM password                             (TSM_PASSWORD) = 
  258.  
  259.  
  260.  
  261.  Automatic maintenance                      (AUTO_MAINT) = OFF
  262.  
  263.    Automatic database backup            (AUTO_DB_BACKUP) = OFF
  264.  
  265.    Automatic table maintenance          (AUTO_TBL_MAINT) = OFF
  266.  
  267.      Automatic runstats                  (AUTO_RUNSTATS) = OFF
  268.  
  269.        Automatic statement statistics  (AUTO_STMT_STATS) = OFF
  270.  
  271.      Automatic statistics profiling    (AUTO_STATS_PROF) = OFF
  272.  
  273.        Automatic profile updates         (AUTO_PROF_UPD) = OFF
  274.  
  275.      Automatic reorganization               (AUTO_REORG) = OFF
  276.  
  277.  
  278.  
  279.  Enable XML Character operations        (ENABLE_XMLCHAR) = YES
  280.  
  281.  WLM Collection Interval (minutes)     (WLM_COLLECT_INT) = 0
  282.  
Thank you for your input.

With regards,

Marko
Sep 16 '10 #1
0 2396

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