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Problem IC89631
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Status: Closed |
MEMORY LEAK IN APPL HEAP with intra-partition parallelism and plans choose to rebalancing rows between SMP subagents (REBAL). |
| product: |
DB2 FOR LUW / DB2FORLUW / A10 - DB2 |
| Problem description: |
Application Heap consuming memory and causing out of memory
errors when instance is running with intra-partition parallelism
and plan chosen is rebalancing rows between SMP subagents (REBAL
will be seen in explain).
The problem is triggered by a memory leak in the rebalancer,
which can be identified with the following relevant lines of a
"db2pd -memb" output:
...
Memory blocks sorted by size for apph pool:
PoolID PoolName TotalSize(Bytes) TotalCount LOC File
1 apph 1142997347 1145749 ****
1984253944
Memory blocks sorted by size for apph pool:
PoolID PoolName TotalSize(Bytes) TotalCount LOC File
1 apph 2189465388 2177435 ****
1984253944
Memory blocks sorted by size for apph pool:
PoolID PoolName TotalSize(Bytes) TotalCount LOC File
1 apph 2049430557 2043158 ****
1984253944
All memory consumers in Appl memory set:
PoolID PoolName TotalSize(Bytes) %Bytes TotalCount %Count LOC
File
1 apph 2189465388 38.33 2177435
0.66 **** 1984253944
1 apph 2049430557 35.88 2043158
0.62 **** 1984253944
1 apph 1142997347 20.01 1145749
0.35 **** 1984253944 |
| Problem Summary: |
****************************************************************
* USERS AFFECTED: *
* All *
****************************************************************
* PROBLEM DESCRIPTION: *
* See Error Description *
****************************************************************
* RECOMMENDATION: *
* Upgrade to DB2 Version 10.1 Fix Pack 3. *
**************************************************************** |
| Local Fix: |
Disable intra-partition parallelism |
| available fix packs: |
DB2 Version 10.1 Fix Pack 3 for Linux, UNIX, and Windows
DB2 Version 10.1 Fix Pack 4 for Linux, UNIX, and Windows
DB2 Version 10.1 Fix Pack 3a for Linux, UNIX, and Windows
DB2 Version 10.1 Fix Pack 6 for Linux, UNIX, and Windows
|
| Solution |
First fixed in DB2 Version 10.1 Fix Pack 3. |
| Workaround |
not known / see Local fix |
| Timestamps |
Date - problem reported :
Date - problem closed :
Date - last modified :
| 18.01.2013
02.10.2013
02.10.2013 |
| Problem solved at the following versions (IBM BugInfos) |
|
| Problem solved according to the fixlist(s) of the following version(s) |
| 10.1.0.3
|
 |
| 10.1.0.3
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