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PK59770: ABEND04E RC00E70005 LOC=DSNNXML.DSNNOGET:M720

A fix is available

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APAR status

  • Closed as program error.

Error description

  • While running XML queries with isolation level UR or CS_CDN,
    abend 04E DSNNOGET:M720 may be encountered.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED: All DB2 Customers using XML columns.         *
    ****************************************************************
    * PROBLEM DESCRIPTION: ABEND04E RC00E70005 DSNNOGET:M720 while *
    *                      running XML queries with isolation      *
    *                      level UR or CS_CDND                     *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    During index access path with XML select and lock avoidance,
    one agent can read the base row, but if it gets suspended
    before it has a chance to acquire the XML locks, another agent
    can get in and delete the row and the XML columns and commit
    and leave. In this case the selecting agent will abend because
    it will not find the delete XML column.
    DB2 code needs to check for data page changes to handle the
    window with lock avoidance.
    

Problem conclusion

  • DB2 code was changed to check the page after getting XML locks
    and take corrective action if the page changed in the duration.
    

Temporary fix

Comments

APAR Information

  • APAR number

    PK59770

  • Reported component name

    DB2 OS/390 & Z/

  • Reported component ID

    5740XYR00

  • Reported release

    910

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2008-01-23

  • Closed date

    2008-07-21

  • Last modified date

    2008-09-02

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

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

    UK38382

Modules/Macros

  • DSNIONX2 DSNIOST2
    

Fix information

  • Fixed component name

    DB2 OS/390 & Z/

  • Fixed component ID

    5740XYR00

Applicable component levels

  • R910 PSY UK38382

       UP08/08/11 P F808

Fix is available

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Document Information

Modified date:
02 September 2008