IBM Support

IT10302: REPLICATION PROCESSES CAN HANG ON THE TARGET SERVER WHEN WINDOWS SYSTEM STATE OBJECTS HAVE BEEN REPLICATED.

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You can track all active APARs for this component.

APAR status

  • Closed as program error.

Error description

  • When Windows System objects have been replicated, the target
    server sessions and processes may hang due to an infinite loop.
    Once the hang occurs, it will occur for all replications, even
    ones which do not include Windows System State objects.
    
    
    Diagnosing the problem: Collect the Tivoli Storage Manager
    server SHOW THREADS command output and find a session thread
    with imReplResolveInFlightGroups calling ImGetBackupRowExt in
    the call stack. For example:
    
    
    
    Thread 2444, Parent 532: psSessionThread, Storage 6397943,
    AllocCnt 4282 HighWaterAmt 7442703
     tid=1be8c, ptid=3e14, det=1, zomb=0, join=0, result=0, sess=816
      Holding mutex IMV->replGroupMutex (0x111c98828), acquired at
    imrepl.c(7565)
      Holding mutex txnP->mutex (0x1606c5028), acquired at
    tbcli.c(941)
      Stack trace:
        0x09000000001f1090 semop
        0x09000000017f9820 sqloSSemP
        0x09000000017f93d8
    sqlccipcrecv__FP17SQLCC_COMHANDLE_TP12SQLCC_COND_T
        0x09000000017f8cc8 sqlccrecv
        0x09000000017f8e74 sqljcReceive__FP10sqljCmnMgr
        0x09000000017c3afc
    sqljrDrdaArOpen__FP14db2UCinterfaceP15db2UCCursorInfo
        0x090000000171f080
    csmOpen__FP14db2UCinterfaceP15db2UCCursorInfo
        0x090000000171f5c8
    CLI_sqlOpen__FP17CLI_STATEMENTINFOP19CLI_ERRORHEADERINFO
        0x09000000017d7114
    SQLExecute2__FP17CLI_STATEMENTINFOP19CLI_ERRORHEADERINFO
        0x09000000017d3cd8 SQLExecute
        0x00000001001140c8 RdbPrepareAndExecuteStmt
        0x000000010010e060 RdbCliFetch
        0x000000010010ce3c tbCliSRFetch
        0x00000001007edec4 ImGetBackupRowExt
        0x00000001007bbc7c imReplResolveInFlightGroups
        0x0000000100d4b960 DoEndReplication
        0x0000000100d3fe78 SmReplServerSession
        0x0000000100747d68 DoReplServer
        0x000000010073d9f4 smExecuteSession
        0x0000000100167c98 psSessionThread
        0x000000010000cae0 StartThread
    
    
    Server performance instrumentation will also show the above
    thread running an excessive number of executions of this SQL:
    
    
    
    SELECT NODEID,FSID,GROUPTYPE,GROUPID,HL_NAME FROM
    "TSMDB1"."BACKUP_OBJECTS"  WHERE (NODEID=? AND
    OBJID=?) FETCH FIRST 1 ROW ONLY FOR READ ONLY WITH UR --2444
    
    
    The server monitoring script will provide both SHOW THREADS and
    server performance instrumentation, and can be downloaded from
    the following URL:
    
    
    https://www-304.ibm.com/support/docview.wss?mynp=OCSSGSG7&mync=R
    &uid=swg21432937
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * All Tivoli Storage Manager server users.                     *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * See Error Description.                                       *
    ****************************************************************
    * RECOMMENDATION:                                              *
    * Apply fixing level when available.  This problem is          *
    * currently projected to be fixed in levels 6.3.6 and 7.1.3.   *
    * Note that this is subject to change at the discretion of     *
    * IBM.                                                         *
    ****************************************************************
    

Problem conclusion

  • The problem was fixed.
    Affected Platforms: AIX, HP-UX, Solaris, Linux, and Windows.
    

Temporary fix

Comments

APAR Information

  • APAR number

    IT10302

  • Reported component name

    TSM SERVER

  • Reported component ID

    5698ISMSV

  • Reported release

    71A

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2015-07-23

  • Closed date

    2015-07-28

  • Last modified date

    2015-07-28

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

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

Fix information

  • Fixed component name

    TSM SERVER

  • Fixed component ID

    5698ISMSV

Applicable component levels

  • R63A PSY

       UP

  • R63H PSY

       UP

  • R63L PSY

       UP

  • R63S PSY

       UP

  • R63W PSY

       UP

  • R71A PSY

       UP

  • R71H PSY

       UP

  • R71L PSY

       UP

  • R71S PSY

       UP

  • R71W PSY

       UP



Document information

More support for: Tivoli Storage Manager

Software version: 7.1.3

Reference #: IT10302

Modified date: 28 July 2015