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IT11966: QUERY PROCESS MAY CAUSE SERVER CRASH

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You can track all active APARs for this component.

APAR status

  • Closed as program error.

Error description

  • There is a small timing window when a Tivoli Storage Manager
    Server may crash after execution of QUERY PROCESS command
    against a process that has just started and still has the
    Process ID number equal to zero.
    The following errors maybe logged into the Server Activity Log
    some moments before the crash:
    
    for example:
    
    ANR9999D_3000086854 icQueryBackup(icback.c:668) Thread<504982>:
    Query backup process 205; does not match  with the current
    backup DB process 0
    
    Where the Query backup process matches the process id in the
    message that came right before this, that is:
    
    ANR2280I Full database backup started as process 205
    
    while the current backup DB process is 0.
    
    The following core dump stack has been observed on AIX for this
    problem:
    
    PsAbortServer(??) at 0x100012b80
    pkAbort(??) at 0x10000ba24
    pkAcquireMutexTracked(??, ??, ??) at 0x100007208
    procReportContext(??, ??, ??) at 0x100324ea0
    OutDiagToCons(??, ??, ??, ??, ??) at 0x10001d8f4
    outDiagfExt(0x3e, 0x0, 0x119116880, 0x101c88380, 0xcb, 0x0,
    0x11933bd08,0x0) at 0x1000098c4
    icQueryBackup(??, ??, ??, ??, ??) at 0x1006cebcc
    procQueryProcess(??, ??, ??, ??) at 0x100324230
    AdmQueryProcess(??) at 0x100f35258
    AdmCommandLocal(??, ??, ??, ??, ??) at 0x100355fd0
    admCommand(??, ??, ??, ??, ??) at 0x100353f54
    RunScript(??, ??, ??, ??) at 0x10035c600
    DoRunScript(??) at 0x100351360
    AdmCommandLocal(??, ??, ??, ??, ??) at 0x100355fd0
    admCommand(??, ??, ??, ??, ??) at 0x100353f54
    SmExecScheduledCommand(??) at 0x10088ebbc
    smScheduledConsoleSession(??) at 0x10088e880
    CsRunCmdThread(??) at 0x10088ca2c
    StartThread(0x0) at 0x10000cadc
    
    
    Also the following error messages can be logged into the
    "dsmserv.err" file:
    
    ANR9999D Mutex acquire deadlock at process.c.1492: mutex for
    process.c.346 thread 504982 (tid 3c96) - mutex is owned by
    thread 504982 (tid 3c96) for process.c.1026, errno=45.
    ANR9999D Mutex acquisition failure, errno=45 from
    process.c.1492; thread 504982 (tid 3c96).
    ANR7838S Server operation terminated.
    
    This problem might happen for any Server process and will only
    occur in scenario when the Context Reporting is enabled (
    default to ON and controlled by SET CONTEXTMESSAGING command)
    
    
    
    Tivoli Storage Manager Versions Affected:
    All supported versions of Tivoli Storage Manager Server
    
    
    
    Initial Impact:
    Medium
    
    
    
    Additional Keywords:
    TSM Server SP Spectrum Protect ANR9999D Mutex acquire deadlock
    "errno=45" ANR7838S  ANR9999D_3000086854 "Q PROCESS" crash core
    dump
    

Local fix

  • Disable the Server Message Context Reporting by command
    "SET CONTEXTMESSAGING OFF"
    

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 level 7.1.5. Note that this is      *
    * subject to change at the discretion of IBM.                  *
    ****************************************************************
    

Problem conclusion

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

Temporary fix

Comments

APAR Information

  • APAR number

    IT11966

  • 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

    2015-10-26

  • Closed date

    2016-02-04

  • Last modified date

    2016-02-04

  • 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

  • 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 #: IT11966

Modified date: 04 February 2016