IC84266: CHANCES OF MEMORY LEAK INTRODUCED IN VERSION 9.7 FIX PACK 5

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You can track all active APARs for this component.

APAR status

  • Closed as program error.

Error description

  • In Version 9.7 Fix Pack 5, chances of having a memory leak have
    been introduced. To check if a memory leak has happened, issue
    the db2pd -memb command and check if the output of the command
    looks similar to the following output:
    
    Memory blocks sorted by size for private pool:
    PoolID     PoolName   TotalSize(Bytes)     TotalCount LOC   File
    88         private    264376936                      164622
    1541  2904145706
    88         private    131072                               1
    1287  789176096
    88         private    49152                                  5
    385   1234005865
    88         private    7072                                    2
    1253  2506170342
    88         private    4296                                    1
    246   2926445243
    
    Total size for PRIVATE memory set: 283633406 bytes
    
    Memory blocks sorted by size for private pool:
    PoolID     PoolName   TotalSize(Bytes)     TotalCount LOC   File
    88         private    283437968                     175389
    1541  2904145706
    88         private    131072                             1
    1287  789176096
    88         private    49152                                5
    385   1234005865
    88         private    7072                                2
    1253  2506170342
    
    The private memory usage in file 2904145706 at line 1541 keeps
    leaking and consumes physical memory.
    
    This memory leak can happen if a query uses a LOB locator for
    the output column.
    
    Example:
    ODBC  application does:
    select substr( clob_column, 1, 30 ) from t1
    SQLBindCol is done with with SQL_C_CLOB_LOCATOR
    
    The query is returning a LOB column, but the client wants a LOB
    locator.
    

Local fix

  • n/a
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * N/A                                                          *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * See Error Description                                        *
    ****************************************************************
    * RECOMMENDATION:                                              *
    * Install fix                                                  *
    ****************************************************************
    

Problem conclusion

  • Install fix
    

Temporary fix

Comments

APAR Information

  • APAR number

    IC84266

  • Reported component name

    DB2 FOR LUW

  • Reported component ID

    DB2FORLUW

  • Reported release

    A10

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2012-06-13

  • Closed date

    2012-11-28

  • Last modified date

    2012-11-28

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

    IC80394

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

Fix information

  • Fixed component name

    DB2 FOR LUW

  • Fixed component ID

    DB2FORLUW

Applicable component levels

  • R970 PSY

       UP



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Document information


More support for:

DB2 for Linux, UNIX and Windows

Software version:

10.1

Reference #:

IC84266

Modified date:

2012-11-28

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