|
Problem IC91562
|
Status: Closed |
UNDER RARE CONDITIONS, AUTOMATIC STATISTICS COLLECTION CAN LEAD TO AN ACTIVE LOG FULL CONDITION. |
| product: |
DB2 FOR LUW / DB2FORLUW / 970 - DB2 |
| Problem description: |
When auto_runstats and auto_stmst_stats are both enabled, at any
given time, two automatic runstats might be running against
different tables. The runstats operation requires very few
locks. But, when it requests a lock, if LOCKLIST has been been
exhausted at that point in time, it will experience lock
escalation. Under the rare conditions where auto_stmt_stats is
performing an automatic runstats, and auto_runstats experiences
lock escalation while performing another automatic runstats, the
latter might have to wait for the former to complete. If the
auto_stmt_stats runstats is against a large table with multiple
indexes, it might take some time to complete, and the waiting
auto_runstats runstats might have to wait for a significant
amount of time. In this situation, active log full can be
reached. |
| Problem Summary: |
****************************************************************
* USERS AFFECTED: *
* All DB2 V9.7 on LUW users. *
****************************************************************
* PROBLEM DESCRIPTION: *
* See Error Description *
****************************************************************
* RECOMMENDATION: *
* Upgrade to DB2 V9.7 Fix Pack9 or higher. *
**************************************************************** |
| Local Fix: |
To eliminate a long or indefinite wait, configure the
LOCKTIMEOUT database parameter to the maximum time that an
application should wait for a lock. |
| available fix packs: |
DB2 Version 9.7 Fix Pack 9 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 9a for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 10 for Linux, UNIX, and Windows
|
| Solution |
Fixed in DB2 V9.7 Fix Pack 9. |
| Workaround |
not known / see Local fix |
| BUG-Tracking |
forerunner : APAR is sysrouted TO one or more of the following: IC91954 IC95280
follow-up : |
| Timestamps |
Date - problem reported :
Date - problem closed :
Date - last modified :
| 15.04.2013
25.08.2014
25.08.2014 |
| Problem solved at the following versions (IBM BugInfos) |
9.7.,
9.7.FP9
|
| Problem solved according to the fixlist(s) of the following version(s) |
| 9.7.0.9
|
 |
| 9.7.0.9
|
|
