|
Problem IC66639
|
Status: Closed |
UNNECESSARY PACKED DESCRIPTOR UPDATES DURING ALTER TABLESPACE STATEMENT |
| product: |
DB2 FOR LUW / DB2FORLUW / 910 - DB2 |
| Problem description: |
Alter tablespace statements can lead to unnecessary packed
descriptor updates for tables that reside in the affected
tablespace. This can lead to unnecessary delays, or unexpected
locking problems.
The fix for this apar will ensure that the table packed
descriptor is only updated if really needed
e.g. when there is a change in transferrate, overhead, or
prefetchsize. |
| Problem Summary: |
****************************************************************
* USERS AFFECTED: *
* All users with many tables in a single tablespace using *
* automatic prefetch size and running frequent alter *
* tablespace statements *
****************************************************************
* PROBLEM DESCRIPTION: *
* The problem will cause unnecessary exclusive locks to be *
* acquired which can lead to delays in processing or even *
* perceived hang situations due to lock wait settings. *
****************************************************************
* RECOMMENDATION: *
* Upgrade to V9.1 Fix Pack 10 *
**************************************************************** |
| Local Fix: |
|
| available fix packs: |
DB2 Version 9.1 Fix Pack 10 for Linux, UNIX and Windows
DB2 Version 9.1 Fix Pack 11 for Linux, UNIX and Windows
DB2 Version 9.1 Fix Pack 12 for Linux, UNIX and Windows
|
| Solution |
The problem has first been fixed in V9.1 Fix Pack 10 |
| Workaround |
not known / see Local fix |
| BUG-Tracking |
forerunner : APAR is sysrouted TO one or more of the following: IC66644
follow-up : |
| Timestamps |
Date - problem reported :
Date - problem closed :
Date - last modified :
| 24.02.2010
10.06.2011
10.06.2011 |
| Problem solved at the following versions (IBM BugInfos) |
9.1.FP10
|
| Problem solved according to the fixlist(s) of the following version(s) |
| 9.1.0.10
|
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