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IC98522: MEMORY LEAK WHEN USING THE TEXT SEARCH MODULE

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You can track all active APARs for this component.

 

APAR status

  • Closed as program error.

Error description

  • Multiple leaks in the private memory area. Queries running
    concurrently on the database using text search feature will show
    noticeable growth in private memory usage.
    
    
    Sample query would be:-
    db2 connect to tst
    
    db2 "SELECT author, year, SUBSTR(title,1,30) FROM tab1  WHERE
    CONTAINS(bookinfo,
    '@xpath:''/bookinfo/story[contains(\"range\")]''') = 1  or
    CONTAINS(bookinfo,
    '@xpath:''/bookinfo/title[contains(\"the\")]'' ') = 1" fetch
    first 1 rows only
    
    db2 connect reset
    
    
    TIME      USER          PID   %CPU  %MEM   SZ  RSS    COMMAND
    MEM_Name    MemUsed(KB)  AVM      FRE     TSSHM  Agents
    15:25:07  db2inst6  38797330  0.2  7.0  1015772  1015688
    db2sysc    PRIVATE    29824         1556227  595594  8592  4262
    15:25:20  db2inst6  38797330  0.2  8.0  1050012  1049928
    db2sysc    PRIVATE    30848         1565828  585991  8592  4403
    15:25:33  db2inst6  38797330  0.2  8.0  1083804  1083720
    db2sysc    PRIVATE    30848         1574954  576480  8592  4540
    15:25:46  db2inst6  38797330  0.2  8.0  1117916  1117832
    db2sysc    PRIVATE    31872         1583094  568340  8592  4675
    15:26:00  db2inst6  38797330  0.2  8.0  1151580  1151496
    db2sysc    PRIVATE    31872         1591681  559752  8592  4808
    15:26:13  db2inst6  38797330  0.2  8.0  1185284  1185200
    db2sysc    PRIVATE    32896         1600168  551265  8592  4943
    15:26:26  db2inst6  38797330  0.2  9.0  1219484  1219400
    db2sysc    PRIVATE    32896         1608798  542635  8592  5078
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * All                                                          *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * See Problem Description above                                *
    ****************************************************************
    * RECOMMENDATION:                                              *
    * Upgrade to DB2 Version 9.7 Fix Pack 10                       *
    ****************************************************************
    

Problem conclusion

  • First fixed in 9.7 Fix Pack 10
    

Temporary fix

Comments

APAR Information

  • APAR number

    IC98522

  • Reported component name

    DB2 FOR LUW

  • Reported component ID

    DB2FORLUW

  • Reported release

    970

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2013-12-30

  • Closed date

    2015-04-09

  • Last modified date

    2015-04-09

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

  • 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 PSN

       UP

[{"Business Unit":{"code":"BU048","label":"IBM Software"},"Product":{"code":"SSEPGG","label":"DB2 for Linux, UNIX and Windows"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"9.7","Edition":"","Line of Business":{"code":"LOB10","label":"Data and AI"}}]

Document Information

Modified date:
09 April 2015