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DB2 - Problembeschreibung

Problem IC77015 Status: Geschlossen

DB2HMON AGENT AND DB2THROT DEADLOCK BETWEEN LATCH AND SEMAPHORE,LEADING TO
DB2HMON HOLDING THE OLDEST TRANSACTION

Produkt:
DB2 FOR LUW / DB2FORLUW / 950 - DB2
Problembeschreibung:
When DB2HMON agent has deadlocked with db2throt process, the 
database very likely will run out of logfiles at some point in 
time, by DB2HMON holding the oldest transaction. Reaching 
NUM_LOG_SPAN nor FORCE APPLICATION will get the agent out of the 
hang. The instance needs to be stopped with db2_kill to clean 
the situation. The needed crash recovery afterwards might need 
longer to complete, as more logfiles need to be processed. 
 
Stack for the DB2HMON agent: 
 0: _semtimedop_sys() 
 1: semtimedop() 
 2: sqloWaitEDUWaitPost() 
 3: SqlthStartStopControlEDU::stopEDU() 
 4: SqlthControllerManager::cancelAControlSubscription() 
 5: SqlthJobControl::~SqlthJobControl() 
 6: SqlthJobControl::~SqlthJobControl() 
 7: SqlthJob::~SqlthJob() 
 8: SqlthJob::~SqlthJob() 
 9: SqlthJobManager::removeJob() 
10: sqlrRunstatsTerminateJobServices() 
11: sqlrLocalRunstats() 
... 
 
db2throt shows the following stack: 
 0: _nanosleep_sys() 
 1: _nanosleep() 
 2: sqloSpinLockConflict() 
 3: SqlthControllerManager::HAS_NEW_JOB_STARTED_OR_COMPLETED() 
 4: SqlthControllerManager::asyncControllerMain() 
 5: SqlthStartStopControlEDU::_asyncControllerMain() 
 6: sqloCreateEDU() 
 7: sqloSpawnEDU() 
 8: SqlthStartStopControlEDU::startEDU() 
 9: SqlthControllerManager::newControlSubscription() 
10: SqlthJobControl::setPriority() 
...
Problem-Zusammenfassung:
**************************************************************** 
* USERS AFFECTED:                                              * 
* ALL                                                          * 
**************************************************************** 
* PROBLEM DESCRIPTION:                                         * 
* See Problem Description above.                               * 
**************************************************************** 
* RECOMMENDATION:                                              * 
* Upgrade to DB2 Version 9.5 Fix Pack 9.                       * 
****************************************************************
Local-Fix:
verfügbare FixPacks:
DB2 Version 9.5 Fix Pack 9 for Linux, UNIX, and Windows
DB2 Version 9.5 Fix Pack 10 for Linux, UNIX, and Windows

Lösung
First fixed in DB2 Version 9.5 Fix Pack 9.
Workaround
keiner bekannt / siehe Local-Fix
Weitere Daten
Datum - Problem gemeldet    :
Datum - Problem geschlossen :
Datum - der letzten Änderung:
17.06.2011
14.03.2012
14.03.2012
Problem behoben ab folgender Versionen (IBM BugInfos)
9.5.FP9
Problem behoben lt. FixList in der Version
9.5.0.9 FixList