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PM60650: DB2 STORAGE ABEND04E 00E20003 IN DSNGEGFB DSNSVBK OFFSET070E

A fix is available

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APAR status

  • Closed as program error.

Error description

  • DB2 storage ABND 04E 00E20003 in DSNGEGFB DSNSVBK +070E as
    this problem was caused by scheduling write requests faster than
    write engines could become available. Message DSNV508I was also
    seen.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED: ALL V10 DB2 users.                           *
    ****************************************************************
    * PROBLEM DESCRIPTION: MSGDSNV508I DSNVMON - DB2 DBM1 BELOW    *
    *                                  THE BAR STORAGE             *
    *                                                              *
    *                      ABEND04E RC00E20003 in DSNSVBK          *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    The DBM1 address space is consuming a large amount of available
    31-bit below-the-bar storage. This problem is caused by DB2
    scheduling asynchronous DASD write requests faster than the
    write engines could process them. These requests are queued up
    in a below-the-bar storage pool.
    

Problem conclusion

  • DB2 has been modified to help alleviate below-the-bar storage
    shortages for a specific scenario: When a buffer pool's vertical
    deferred write threshold is reached, for the same page set or
    partition, DB2 will avoid scheduling multiple asynchronous DASD
    write requests if one is already in the queue waiting to be
    processed by the next available write engine.
    

Temporary fix

  • *********
    * HIPER *
    *********
    

Comments

APAR Information

  • APAR number

    PM60650

  • Reported component name

    DB2 OS/390 & Z/

  • Reported component ID

    5740XYR00

  • Reported release

    A10

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    YesHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2012-03-16

  • Closed date

    2012-05-01

  • Last modified date

    2012-06-03

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

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

    UK78404

Modules/Macros

  • DSNB5COM
    

Fix information

  • Fixed component name

    DB2 OS/390 & Z/

  • Fixed component ID

    5740XYR00

Applicable component levels

  • RA10 PSY UK78404

       UP12/05/16 P F205

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

Modified date:
03 June 2012