IBM Support

IC96448: AFTER THE TERMINATION OF A MULTI-THREADED CLIENT RESTORE, THE RESTARTED RESTORE OPERATION MAY BE SINGLE-THREADED

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APAR status

  • Closed as program error.

Error description

  • In the event that a multi-threaded no-query restore operation
    should fail due to a communication failure, restarting the
    restore operation may result in a single-threaded restore.  This
    can significantly affect the performance of the restore
    operation.
    
    Tivoli Storage Manager Versions Affected:
    All platforms/versions affected
    
    Customer/L2 Diagnostics:
    The activity log excerpt will initially show multiple restore
    sessions started for the client, with each individual session
    independently restoring data:
    
     ANR0406I Session 89804 started for node TSMCLIENT (WinNT).
     ANR1183I Initial determination of removable volumes required
     for a restore request from session 89804 is complete.
     Additional volumes may still be required.
     ANR0406I Session 93173 started for node TSMCLIENT (WinNT).
     ANR0406I Session 93176 started for node TSMCLIENT (WinNT).
     ANR0406I Session 93177 started for node TSMCLIENT (WinNT).
     ANR0406I Session 93179 started for node TSMCLIENT (WinNT).
    
     ANR0510I Session 93176 opened input volume 200187L5.
     ANR0510I Session 93177 opened input volume 200137L5.
     ANR0510I Session 93179 opened input volume 200404L5.
     ANR0510I Session 93173 opened input volume 200173L5.
     ANR0510I Session 89804 opened input volume 200290L5.
    
    A communication failure than causes the initial multi-threaded
    restore operation to fail:
    
     ANR0480W Session 93176 for node TSMCLIENT (WinNT) terminated -
     connection with client severed.
     ANR0403I Session 93179 ended for node TSMCLIENT (WinNT).
     ANR0403I Session 93173 ended for node TSMCLIENT (WinNT).
     ANR0403I Session 93177 ended for node TSMCLIENT (WinNT).
     ANR0403I Session 89804 ended for node TSMCLIENT (WinNT).
    
    Upon restarting the restore operation, the activity log will
    show the client attempting to start multiple restore sessions on
    the server, however, all but one of these sessions will end
    immediately:
    
     ANR0406I Session 108021 started for node TSMCLIENT (WinNT).
     ANR1183I Initial determination of removable volumes required
     for a restore request from session 108021 is complete.
     Additional volumes may still be required.
     ANR0406I Session 108028 started for node TSMCLIENT (WinNT).
     ANR0406I Session 108029 started for node TSMCLIENT (WinNT).
     ANR0406I Session 108030 started for node TSMCLIENT (WinNT).
     ANR0403I Session 108030 ended for node TSMCLIENT (WinNT).
     ANR0403I Session 108028 ended for node TSMCLIENT (WinNT).
     ANR0403I Session 108029 ended for node TSMCLIENT (WinNT).
    
    The restarted restore operation run to completion, but will be
    single-threaded.
    
    Initial Impact:
    Medium
    
    Additional Keywords:
    nqr restore restart restarted restartable
    

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 level 6.3.5 and 7.1.1.        *
    *                 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

    IC96448

  • Reported component name

    TSM SERVER

  • Reported component ID

    5698ISMSV

  • Reported release

    63A

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2013-09-27

  • Closed date

    2013-12-04

  • Last modified date

    2013-12-04

  • 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

  • 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: 63A

Reference #: IC96448

Modified date: 04 December 2013