PM80037: NO DSNB327I GBP ADEQUATE FREE SPACE MESSAGE AFTER AUTO ALTER TO INCREASE SPACE COMPLETED SUCCESSFULLY

A fix is available

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You can track all active APARs for this component.

APAR status

  • Closed as program error.

Error description

  • A message dsnb319a indicated there was a shortage of space.
    Then there was an automatic Group Buffer Pool alter initiated.
    IXC530I START ALTER REQUEST FOR STRUCTURE DSNxxxx_GBPx ACCEPTED.
    Plus message:
    DSNB325A  -B01A DSNB5STS THERE IS A CRITICAL SHORTAGE
                             OF SPACE IN GROUP BUFFER POOL GBPx
    This dsnb325i occurred as the number of changed pages went over
    90% of the total data elements.
    Then message IXC590i to indicate the auto alter had succesfully
    completed.
    IXC590I AUTOMATIC ALTER PROCESSING FOR STRUCTURE DSNxxxx_GBPx
    A display XCF shoed the changed data elements in this case went
    down to 11% of total data elements, however there was no
    subsequent dsnb327i to indicate that the GBP now had adequate
    free space.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED: All DB2 users in data sharing environment.   *
    ****************************************************************
    * PROBLEM DESCRIPTION: After MSGDSNB319A or MSGDSNB325A is     *
    *                      issued for a group buffer pool (GBP)    *
    *                      space shortage, the expected message    *
    *                      MSGDSNB327I may be missing when the     *
    *                      GBP free space becomes adequate.        *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    When GBP is 90% full or 75% full with changed data,
    MSGDSNB319A or MSGDSNB325A is issued for space shortage.
    When the changed data falls below 90% or 75% but it is still
    above 60% of the GBP capacity, the space shortage message is
    automatically deleted. DB2 incorrectly loses the space shortage
    tracking information causing the problem of missing MSGDSNB327I
    once the changed data drops to 60% or less.
    

Problem conclusion

  • DB2 has been fixed to track the space shortage information
    correctly and issue MSGDSNB327I when there is plenty of space
    in the GBP.
    

Temporary fix

Comments

APAR Information

  • APAR number

    PM80037

  • 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

    2013-01-07

  • Closed date

    2013-02-18

  • Last modified date

    2013-04-02

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

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

    UK91780 UK91781

Modules/Macros

  •    DSNB1CNE DSNB1GD1 DSNB5STS
    

Fix information

  • Fixed component name

    DB2 OS/390 & Z/

  • Fixed component ID

    5740XYR00

Applicable component levels

  • RA10 PSY UK91780

       UP13/03/05 P F303

  • R910 PSY UK91781

       UP13/03/05 P F303

Fix is available

  • Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.



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Document information


More support for:

DB2 for z/OS

Software version:

A10

Reference #:

PM80037

Modified date:

2013-04-02

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