|
Problem IC73240
|
Status: Closed |
MEMORY LEAK IN THE PRIVATE MEMORY SET ON HADR STANDBY |
| product: |
DB2 FOR LUW / DB2FORLUW / 970 - DB2 |
| Problem description: |
Memory can be leaked when moving an extent during the redo/undo
operation. This causes the private memory set to grow. This
leak is most likely to be noticed on an HADR standby database
and will manifest as a hang situation when primary is blocked
from committing due to poor performance of standby. |
| Problem Summary: |
****************************************************************
* USERS AFFECTED: *
* Users with a large amount of undo/redo processing *
****************************************************************
* PROBLEM DESCRIPTION: *
* Memory can be leaked when moving an extent during the *
* redo/undo operation. This causes the private memory set to *
* grow. This leak is most likely to be noticed on an HADR *
* standby database and will manifest as a hang situation when *
* primary is blocked from committing due to poor performance *
* on the standby. *
* *
* Symptoms of this issue: *
* * All memory on the machine is consumed *
* * The PRIVATE memory set (db2pd -dbptnmem) is unexpectedly *
* large *
* * Redo processing on the standby will be very slow due to *
* the shortage of memory *
****************************************************************
* RECOMMENDATION: *
* Upgrade to DB2 v9.7 FP4 or newer. *
**************************************************************** |
| Local Fix: |
Stopping and starting HADR on the primary has been seen to
release this memory. |
| available fix packs: |
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 8 for Linux, UNIX, and Windows
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 |
Upgrade to DB2 v9.7 FP4 or newer. |
| Workaround |
Stopping and starting HADR on the primary has been seen to
release this memory. |
| Timestamps |
Date - problem reported :
Date - problem closed :
Date - last modified :
| 13.12.2010
09.05.2011
09.05.2011 |
| Problem solved at the following versions (IBM BugInfos) |
9.7.FP4
|
| Problem solved according to the fixlist(s) of the following version(s) |
| 9.7.0.4
|
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