|
Problem IC73944
|
Status: Closed |
DATABASE MEMORY ALLOCATION EFFICIENCY IMPROVEMENTS |
| product: |
DB2 FOR LUW / DB2FORLUW / 970 - DB2 |
| Problem description: |
Memory allocation requirements of both LOAD and table
compression dictionaries are inefficient, causing memory wastage
and fragmentation. In the case of table compression
dictionaries, excessive memory pool level overhead (logical size
- physical size) may be seen in db2pd -alldbs -mempools output
for the database heap. In the case of LOAD, frequent load
operations may lead to an increase in database memory set level
requirements
Symptoms include excess memory usage and possibly SQL0973 with
the following db2diag.log message.
EDUID : 8786 EDUNAME: db2lload 0
FUNCTION: DB2 UDB, database utilities, DIAG_ERROR, probe:0
DATA #1 : String, 143 bytes
LOADID: XXXXX
Failed to enable fast memblocks , -1961951227, 0, Detected in
file:sqlulbuf2.C, Line:2014 |
| Problem Summary: |
****************************************************************
* USERS AFFECTED: *
* Systems with a high frequency of LOAD operations. *
****************************************************************
* PROBLEM DESCRIPTION: *
* See Error description *
****************************************************************
* RECOMMENDATION: *
* Upgrade to DB2 9.7 Fix pack 4 *
**************************************************************** |
| Local Fix: |
|
| 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 |
First fixed in DB2 9.7 Fix pack 4 |
| Workaround |
not known / see Local fix |
| BUG-Tracking |
forerunner : APAR is sysrouted TO one or more of the following: IC81770
follow-up : |
| Timestamps |
Date - problem reported :
Date - problem closed :
Date - last modified :
| 18.01.2011
29.04.2011
25.11.2013 |
| 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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