PM75608: ABENDS0C4 PIC38 IN DSNB1ABP OFFSET0510

A fix is available

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APAR status

  • Closed as program error.

Error description

  • When Alter Bufferpool was called by WLM asynchronously, an
    internal control block was freed by a WLM termination request
    before Alter Bufferpool completes its operation. This caused the
    Alter Bufferpool command to run into an 0C4 abend.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED: All DB2 users using buffer pool attribute    *
    *                 AUTOSIZE=YES.                                *
    ****************************************************************
    * PROBLEM DESCRIPTION: ABEND0C4 RC00000038 in DSNB1ABP         *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    When Work Load Manager (WLM) adjustment exit is invoked, it
    makes an alter buffer pool request with a parameter list
    asynchronously. In rare cases, WLM adjustment exit is invoked
    to terminate and free the parameter list before the previous
    alter buffer pool request is complete. The alter request abends
    while the parameter list is unexpectedly deallocated.
    

Problem conclusion

  • DB2 has been fixed for WLM to allocate a parameter list for
    altering VPSIZE and the storage for the parameter list is
    deallocated when the alter request is complete.
    

Temporary fix

Comments

APAR Information

  • APAR number

    PM75608

  • Reported component name

    DB2 OS/390 & Z/

  • Reported component ID

    5740XYR00

  • Reported release

    A10

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2012-10-22

  • Closed date

    2012-12-14

  • Last modified date

    2013-01-02

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

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

    UK90366 UK90367

Modules/Macros

  •    DSNB1ABP DSNB1WRA
    

Fix information

  • Fixed component name

    DB2 OS/390 & Z/

  • Fixed component ID

    5740XYR00

Applicable component levels

  • RA10 PSY UK90366

       UP13/01/01 P F212

  • R910 PSY UK90367

       UP13/01/01 P F212

Fix is available

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Document information


More support for:

DB2 for z/OS

Software version:

A10

Reference #:

PM75608

Modified date:

2013-01-02

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