Only required from time to time but can really improve the stability of the DB2 Task Center especially if you have scheduled numerous tasks which run every day.
A lot of entries in the journal of the DB2 Task Center utility can be make it very unstable and let it crash on a regular basis with a JVM Out Of Memory error message.
You have the option to remove them manually but you can also purge them in one batch
with the following db2javit command.
db202:/opt/ibm/db2/V9.7/bin # ./db2javit -j:com.ibm.db2.tools.taskcenter.TCClearHistory -a:”DB202.INTRA.ACME.COM db2admin password Y 90″
For an explanation of the parameters please see the following IBM Technote.