День добрый...
Может, это вам поможет?
https://www-01.ibm.com/support/knowledgecenter/SSEPGG_9.7.0/com.ibm.db2.luw.sql.rtn.doc/com.ibm.db2.luw.sql.rtn.doc-gentopic1.html?cp=SSEPGG_9.7.0/3-6-1-3-2&lang=en
Посмотрите вот это также:
https://www-01.ibm.com/support/knowledgecenter/SSEPGG_9.7.0/com.ibm.db2.luw.sql.rtn.doc/doc/r0054373.html?cp=SSEPGG_9.7.0/3-6-1-3-2-4&lang=en

IKCmax_invocations
An input argument of type INTEGER that specifies the maximum number of executions allowed for the task. If the argument is NULL, there is no limit to the number of times the task can execute. If the argument is 0, the task will not execute.

This value applies to the schedule if schedule is not NULL.

If both end_timestamp and max_invocations are specified, end_timestamp takes precedence. That is, if the end_timestamp timestamp is reached, even though the number of task executions so far has not reached the value of max_invocations, the task will not be executed again.