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IC72170: DB2DIAG.LOG INFO MESSAGES FROM DELIVERBUFFERTOTARGETCHANNEL ARE NOT NECESSARY WHEN THERE IS NO DISCARD REASON

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APAR status

  • Closed as program error.

Error description

  • The db2diag.log will show messages as follow:
    
    2010-10-07-10.09.43.386713-180 I2220E530           LEVEL: Info
    
    PID     : 3789                 TID  : 47446369495360PROC :
    db2sysc 1
    INSTANCE: xxxx               NODE : 001          DB   : xxxxx
    
    APPHDL  : 0-3318               APPID: AC11D215.GD55
    
    AUTHID  : xxxxxx
    
    EDUID   : 297                  EDUNAME: db2agntp 1
    
    FUNCTION: DB2 UDB, fast comm manager,
    sqkfFastCommManager::DeliverBufferToTarg, probe:51
    MESSAGE : Discard reason:
    
    DATA #1 : Hexdump, 4 bytes
    
    0x00002B26F7FFB9D4 : 0000 0000
    ....
    
    This messages are dumped when diaglevel is set to 4. The number
    of entries in the db2diag.log might be significant under some
    circumstances. Leading to performance problems at the instance
    level.
    

Local fix

  • Change DIAGLEVEL to 3
    
    UPDATE DBM CFG USING DIAGLEVEL 3
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * All users in V9.7                                            *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * The db2diag.log will show messages as follow:                *
    *                                                              *
    * 2010-10-07-10.09.43.386713-180 I2220E530          LEVEL:Info *
    * PID    : 3789                TID  : 47446369495360PROC       *
    * :db2sysc 1                                                   *
    * INSTANCE: xxxx              NODE : 001          DB  : xxxxx  *
    * APPHDL  : 0-3318              APPID:  <application-id>       *
    * AUTHID  : xxxxxx                                             *
    * EDUID  : 297                  EDUNAME: db2agntp 1            *
    * FUNCTION: DB2 UDB, fast comm manager,                        *
    * sqkfFastCommManager::DeliverBufferToTarg, probe:51           *
    * MESSAGE : Discard reason:                                    *
    * DATA #1 : Hexdump, 4 bytes                                   *
    * 0x00002B26F7FFB9D4 : 0000 0000                               *
    * ....                                                         *
    *                                                              *
    * This messages are dumped when diaglevel is set to 4. The     *
    * number of entries in the db2diag.log might be significant    *
    * under some                                                   *
    * circumstances. Leading to performance problems at the        *
    * instance level.                                              *
    *                                                              *
    * The size of the db2dig.log will increase rapidely.           *
    ****************************************************************
    * RECOMMENDATION:                                              *
    * Apply V9.7 fix pak 4                                         *
    * or,                                                          *
    * Lower DIAGLEVEL to 3                                         *
    ****************************************************************
    

Problem conclusion

  • Problem first fixed in V9.7 fix pak 4
    

Temporary fix

Comments

APAR Information

  • APAR number

    IC72170

  • 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

    2010-10-25

  • Closed date

    2011-05-24

  • Last modified date

    2011-05-24

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

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

    IC72894

Fix information

  • Fixed component name

    DB2 FOR LUW

  • Fixed component ID

    DB2FORLUW

Applicable component levels

  • R970 PSN

       UP

  • R970 PSY

       UP



Document information

More support for: DB2 for Linux, UNIX and Windows

Software version: 9.7

Reference #: IC72170

Modified date: 24 May 2011