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DB2 - Problem description

Problem IC82358 Status: Closed

After a crash during shutdown while truncating a log file, crash recovery
may fail due to truncated log.

product:
DB2 FOR LUW / DB2FORLUW / 910 - DB2
Problem description:
Due to a timing hole where the log file is truncated during a 
crash the LFH with the SQLPG_HFLAG2_GHCK_TRUNC_LOGFILE flag is 
not written. 
 
Errors produced in the db2diag.log should be similar to the 
following 
 
2012-03-16-04.52.29.626688-240 I2164616A373 LEVEL: Error 
PID : 373150 TID : 1 PROC : db2loggr (DB2INST1) 0 
INSTANCE: db2inst1 NODE : 000 
FUNCTION: DB2 UDB, data protection services, 
sqlpgInitRecoverable, probe:5520 
DATA #1 : <preformatted> 
Unexpected size for S0012345.LOG, PageCount 4074 ExtSize 7000 
actualFileSize 16687104
Problem Summary:
**************************************************************** 
* USERS AFFECTED:                                              * 
* Users are only affected if the system crashes.               * 
**************************************************************** 
* PROBLEM DESCRIPTION:                                         * 
* Due to a timing hole where the log file is truncated during  * 
* a                                                            * 
* crash the LFH with the SQLPG_HFLAG2_GHCK_TRUNC_LOGFILE flag  * 
* is                                                           * 
* not written.                                                 * 
*                                                              * 
* Errors produced in the db2diag.log should be similar to the  * 
* following                                                    * 
*                                                              * 
* 2012-03-16-04.52.29.626688-240 I2164616A373 LEVEL: Error     * 
* PID : 373150 TID : 1 PROC : db2loggr (DB2INST1) 0            * 
* INSTANCE: db2inst1 NODE : 000                                * 
* FUNCTION: DB2 UDB, data protection services,                 * 
* sqlpgInitRecoverable, probe:5520                             * 
* DATA #1 : <preformatted>                                     * 
* Unexpected size for S0012345.LOG, PageCount 4074 ExtSize     * 
* 7000                                                         * 
* actualFileSize 16687104                                      * 
**************************************************************** 
* RECOMMENDATION:                                              * 
* Upgrade to DB2 LUW' version 9.1 fp12                         * 
****************************************************************
Local Fix:
Solution
Workaround
not known / see Local fix
BUG-Tracking
forerunner  : APAR is sysrouted TO one or more of the following: IC83245 IC83247 IC87852 
follow-up : 
Timestamps
Date  - problem reported    :
Date  - problem closed      :
Date  - last modified       :
29.03.2012
24.07.2012
24.07.2012
Problem solved at the following versions (IBM BugInfos)
9.1.FP12
Problem solved according to the fixlist(s) of the following version(s)
9.1.0.12 FixList
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