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PI13895: ABEND04E RC00E2000C IN BUFFER MANAGER STORAGE POOL FOLLOWED BY DB2 DOWN BY 00E50702

A fix is available

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APAR status

  • Closed as program error.

Error description

  • Dump Title: DB2E,ABND=04E-00E2000C,U=VJCR    ,M=N  ,C=101.BMC
    -DSNB1OPS,M=DSNTFRCV,LOC=DSNB1OPP.DSNSVSVB+0AC2
    Buffer manager issued ABEND04E RC00E2000C because buffer manager
    storage pool reached the max.
    01361B80   00000000   00000000   00000000   | ...............
    00000000   00000000   00000000   00000000   | ...............
    14400000   00000000   00000000   7FFFF000   | . ..........".0
    00000000   7FFFF000   00000000   5F49C0B0   | ....".0.....ᆰ.{
    00000000   00000000   00000048   5009B110   | ............&..
    00000000   00000000   00000070   0A00008D   | ................
    D7D6D6D3   40C6D6D9   40D9D4C9   C47EC2C2   | POOL FOR RMID=BB
    F1D9D4C9   C4404040   00000000   00000000   | 1RMID   ........
    .
    x'200' bytes block pool occupied the buffer manager storage pool
    D7E7E2D3   00000000   00000000   00000000   | PXSL............
    00000000   00924B06   00000000   00000000   | .....k..........
    00000000   00000000   00000000   00000000   | ................
    00000000   1821D040   00001000   00000200   | ......} ........
    00000008   00000000   00000000   7C632000   | ............@...
    00000048   1639B2F0   00000000   00000000   | .......0........
    .
    The x'200' bytes block pool was occupied by PB0X.
    Many PB0Xs were orphan. No PB0 pointed most of them.
    It looks like PB0X was missed to free when PB0 was freed.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED: DB2 users.                                   *
    ****************************************************************
    * PROBLEM DESCRIPTION: Storage leak in the ABPSP3 ("POOL FOR   *
    *                      BB1RMID") pool, which may result in     *
    *                      ABEND04E RC00E2000C and possible DB2    *
    *                      subsystem termination.                  *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    DB2 may not free a PB0 extension block (PB0X) when it frees the
    PB0 for a closed non-partitioned table space or index.  Over
    time, these orphan PB0X blocks may consume enough space so that
    storage requests fail, resulting in an ABEND04E RC00E2000C.  In
    some cases, this abend may cause DB2 to crash.
    

Problem conclusion

  • The code which frees PB0 blocks at DB2 checkpoints and buffer
    pool deletions has been modified to ensure that the PB0X block
    is also correctly freed.
    

Temporary fix

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

Comments

APAR Information

  • APAR number

    PI13895

  • 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

    2014-03-18

  • Closed date

    2014-04-29

  • Last modified date

    2014-06-03

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

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

    UI17539 UI17540

Modules/Macros

  • DSNB1CHK DSNB1DVP
    

Fix information

  • Fixed component name

    DB2 OS/390 & Z/

  • Fixed component ID

    5740XYR00

Applicable component levels

  • RA10 PSY UI17539

       UP14/05/14 P F405 ½

  • RB10 PSY UI17540

       UP14/05/14 P F405 ½

Fix is available

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Document Information

Modified date:
03 June 2014