|
Problem IC66624
|
Status: Closed |
CONCURRENT CREATE EVENT MONITOR STATEMENTS DEADLOCK |
| product: |
DB2 FOR LUW / DB2FORLUW / 970 - DB2 |
| Problem description: |
Concurrently executing CREATE EVENT MONITOR statements may
deadlock. Deadlock event monitor output shows that both
statements are holding row locks in SYSIBM.SYSTABLES that the
other application is requesting. |
| Problem Summary: |
****************************************************************
* USERS AFFECTED: *
* All DB2 Version 9.7 GA through to Fix Pack 1 servers on *
* Linux, Unix and Windows platforms executing concurrent *
* create event monitor statements. *
****************************************************************
* PROBLEM DESCRIPTION: *
* Create event monitor statements which are defined to make *
* use of tables (either explicitly specified in the create *
* statement, or implicitly defined based on the event monitor *
* name), need to create these tables as part of the statement. *
* Incorrect isolation levels while scanning SYSIBM.SYSTABLES *
* to carry out the necessary logic lead to the possibility of *
* deadlocks. *
****************************************************************
* RECOMMENDATION: *
* Avoid creating event monitors concurrently, or apply DB2 *
* Version 9.7 Fix Pack 2. *
**************************************************************** |
| Local Fix: |
Ensure that applications are not creating event monitors
concurrently. |
| available fix packs: |
DB2 Version 9.7 Fix Pack 2 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 3 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 3a for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 4 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 5 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 6 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 7 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 9a for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 8 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 9 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 10 for Linux, UNIX, and Windows
|
| Solution |
Problem first fixed in DB2 Version 9.5 Fix Pack 6 and all
subsequent Fix Packs. |
| Workaround |
not known / see Local fix |
| BUG-Tracking |
forerunner : APAR is sysrouted TO one or more of the following: IC66789
follow-up : |
| Timestamps |
Date - problem reported :
Date - problem closed :
Date - last modified :
| 23.02.2010
25.05.2010
25.05.2010 |
| Problem solved at the following versions (IBM BugInfos) |
9.5.FP6,
9.7.FP2
|
| Problem solved according to the fixlist(s) of the following version(s) |
| 9.7.0.2
|
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