PQ61342, 4.0.3: Performance improvement for transaction logging
 Downloadable files
 
Abstract
Improvements to be made to transaction logging performance
 
Download Description
PQ61342 resolves the following problem:

USERS AFFECTED:
All WebSphere Application Server users

PROBLEM DESCRIPTION:
Excessive I/O when using JTA enabled datasources.
tranLogMirrored currently causes a keypoint of the tranlog file to happen after 50 transactions, regardless of the size of the tranlog files. This can result in excessive I/O when using JTA enabled datasources.

PROBLEM CONCLUSION:
tranLogMirrored will be changed to only perform a checkpoint when the transaction log is 85% full, and so the number of I/Os will be reduced.
 
Prerequisites
None
 
 
Installation instructions
Please review the readme for detailed installation instructions
 
URL LANGUAGE SIZE(Bytes)
Readme US English 2267
 
Download package
What is DD?
DOWNLOAD RELEASE DATE LANGUAGE SIZE(Bytes) Download Options
PQ61342 7/30/2002 US English 1052842 FTP DD
 
Technical support
1-800-IBM-SERV U.S. Only
 
Problems (APARs) fixed
PQ61342
 
 


Document Information


Product categories: Software > Application Servers > Distributed Application & Web Servers > WebSphere Application Server
Operating system(s): HP-UX
Software version: 4.0.4
Software edition:
Reference #: 4001553
IBM Group: Software Group
Modified date: Dec 3, 2004