|
Problem IC90228
|
Status: Closed |
USING XML IN QUERIES WITH REOPT BIND OPTION OR EXTENDED INDICATORS LEAKS MEMORY IN DATABASE HEAP IN DPF ENVIRONMENTS |
| product: |
DB2 FOR LUW / DB2FORLUW / 970 - DB2 |
| Problem description: |
A problem was introduced in DPF (multiple data partition)
configurations in DB2 Version 9.7 Fix Pack 7 and Version 10.1
Fix Pack 2 where memory is leaked on every recompile of a query
referencing XML data. Approximately 40K is leaked on each
occurrence - the memory is allocated from the Database Heap
memory pool inside the Database Memory set.
Monitoring tools such as MON_GET_MEMORY_POOL, database snapshot,
db2pd -alldbs -mempools will show the database heap continually
growing in size.
db2pd -alldbs -memblocks db 2
will show a growing number of blocks similar to :
Address DataAddress PoolID PoolName
BlkAge Size(Bytes) I LOC File
0x07000004B1C3ED68 0x07000004B1C3ED80 2 dbh
58235 2504 0 2228 1235116617
0x07000004B1B30A48 0x07000004B1B30A60 2 dbh
58233 2504 0 2228 1235116617
0x07000004B1B31428 0x07000004B1B31440 2 dbh
58229 2504 0 2228 1235116617
...
Note the Size, LOC values may differ slightly, but the File
value will be consistent. It is also normal to have a buildup
of allocations similar to this after database activation as
tables are first accessed. |
| Problem Summary: |
****************************************************************
* USERS AFFECTED: *
* Systems using XML data in DPF environements together with *
* reopt bind option OR extended indicators *
****************************************************************
* PROBLEM DESCRIPTION: *
* See Error Description *
****************************************************************
* RECOMMENDATION: *
* Upgrade to DB2 Version 9.7 Fix pack 8 *
**************************************************************** |
| Local Fix: |
|
| available fix packs: |
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 |
Problem first fixed in DB2 Version 9.7 Fix Pack 8 |
| Workaround |
not known / see Local fix |
| BUG-Tracking |
forerunner : APAR is sysrouted TO one or more of the following: IC90241
follow-up : |
| Timestamps |
Date - problem reported :
Date - problem closed :
Date - last modified :
| 14.02.2013
10.07.2013
10.07.2013 |
| Problem solved at the following versions (IBM BugInfos) |
9.7.FP8
|
| Problem solved according to the fixlist(s) of the following version(s) |
| 9.7.0.8
|
 |
