IC89252: SORT SHARED MEMORY COUNTER UNDERFLOW MAY CAUSE SEVERE MESSAGE IN THE DB2DIAG.LOG

DB2 Version 9.7 Fix Pack 8 for Linux, UNIX, and Windows

APAR status

• Closed as program error.

Error description

• You may see following severe message in the db2diag.log :
  
  2012-08-22-14.11.47.121000+120 I6229343F540       LEVEL: Severe
  PID     : 10364                TID  : 11768       PROC :
  db2syscs.exe
  INSTANCE: DB2                  NODE : 000         DB   : DBNAME
  APPHDL  : 0-31650              APPID:
  10.11.110.210.4934.120822120652
  AUTHID  : DB2INST1
  EDUID   : 11768                EDUNAME: db2agntp 0
  FUNCTION: DB2 UDB, Self tuning memory manager,
  stmmReleaseUnthrottledSharedSortSpace, probe:2615
  MESSAGE : Trying to release more pages than were held -  2 -
  786556 -
           4294705272 -
  
  Message is related to some other warnings of type:
  
  2012-08-22-15.25.17.207000+120 I6242572F1073      LEVEL: Warning
  PID     : 10364                TID  : 2224        PROC :
  db2syscs.exe
  INSTANCE: DB2                  NODE : 000         DB   : DBNAME
  APPHDL  : 0-32116              APPID:
  10.11.110.210.1724.120822131417
  AUTHID  : DB2INST1
  EDUID   : 2224                 EDUNAME: db2agent (DBNAME) 0
  FUNCTION: DB2 UDB, sort/list services,
  sqlsReleaseSharedSortSpace, probe:10
  DATA #1 : String, 46 bytes
  Sort shared memory counter underflow detected
  DATA #2 : unsigned integer, 4 bytes
  260642
  DATA #3 : unsigned integer, 4 bytes
  260640
  CALLSTCK:
    [0] 0x000000018010B885 pdLog + 0x353
    [1] 0x0000000003A349D6 sqlsfshp + 0x9FE
    [2] 0x0000000003A2C753 sqlsopen + 0xC57
    [3] 0x00000000034FDF35 sqlrsopen + 0xCD
    [4] 0x000000000361AFDE sqlrisrt + 0x2D0
    [5] 0x00000000034D6BFF sqlriSectInvoke + 0x139
    [6] 0x0000000003219314 sqlrr_process_fetch_request + 0x1A8
    [7] 0x0000000003214D47 sqlrr_open + 0x531
    [8] 0x00000000023D92EB sqljs_ddm_opnqry + 0x447
    [9] 0x00000000023B8021 sqljsParse + 0x2B85
  
  
  and:
  
  2012-08-23-23.44.03.058000+120 I6566317F1115      LEVEL: Warning
  PID     : 10364                TID  : 6988        PROC :
  db2syscs.exe
  INSTANCE: DB2                  NODE : 000         DB   : DBNAME
  APPHDL  : 0-6810               APPID: *LOCAL.DB2.120823213457
  AUTHID  : DB2INST1
  EDUID   : 6988                 EDUNAME: db2agntp (DBNAME) 0
  FUNCTION: DB2 UDB, sort/list services,
  sqlsReleaseSharedSortSpace, probe:10
  DATA #1 : String, 46 bytes
  Sort shared memory counter underflow detected
  DATA #2 : unsigned integer, 4 bytes
  94440
  DATA #3 : unsigned integer, 4 bytes
  91830
  CALLSTCK:
    [0] 0x000000018010B885 pdLog + 0x353
    [1] 0x0000000003A2F8A2 sqlsReleaseSharedSortSpace + 0x1E4
    [2] 0x0000000003516F09 sqlriReleaseSortSpace + 0x1D
    [3] 0x000000000350935A sqlri_hsjnClose + 0xCA0
    [4] 0x000000000362DB31 sqlrihsjn + 0x329
    [5] 0x00000000034D6BFF sqlriSectInvoke + 0x139
    [6] 0x00000000032DFFF4 sqlrr_smp_router + 0x184
    [7] 0x00000000032E2C8B sqlrr_subagent_router + 0xE6F
    [8] 0x000000000220A77E sqleSubRequestRouter + 0xA32
    [9] 0x000000000220962A sqleProcessSubRequest + 0x200
  
  
  Warnings are recorded with different stacks (and stack might be
  different than the ones above).
  Severe message is informational (no other symptoms of problem
  except mentioned severe message).
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * ALL                                                          *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * See Error Description                                        *
  ****************************************************************
  * RECOMMENDATION:                                              *
  * Upgrade to DB2 version 9.7 fixpack 8                         *
  ****************************************************************
  

Problem conclusion

• Problem was first fixed in DB2 version 9.7 fixpack 8
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

  IC91744

Fix information

• Fixed component name

  DB2 FOR LUW

• Fixed component ID

  DB2FORLUW

Applicable component levels

• R970 PSN

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