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