Schedule service in oc4j?

Question

Hi,
is there a scheduling service in oc4j?
Where can I find documentation about that?
Thanks
Guenther

Answer 1

Found this in the 10.1.3.1 release notes:
14.1.13 Warning Regarding Maximum Concurrent Timers
This release note provides background information and workarounds for warnings, such as the following examples, that occur when the number of concurrent timers exceeds the maximum.
WARNING J2EE OJR-10002
The number of concurrent Timers has reached the maximum limit
By default in 10.1.3.1 and 10.1.3.2, OC4J allows only eight concurrent timers. (A timer can be triggered through an EJB timer, the timer service, or the scheduler.) This limit is low by default because we expect each timer to be of short duration. When the number of timers is at the limit, such as if timers are running longer for any reason, timers are no longer executed; when a new timer occurs, you will see the warning messages. There are two OC4J flags you can use in this circumstance:
* timer.service.debug: Determines whether to output additional diagnostic information for the timer service, including information about the current number of running timers. For example: -Dtimer.service.debug=true
* executor.concurrent.tasks: Specifies the number of concurrent tasks for the Executor Service. Through this flag you can increase the maximum number of concurrent timers allowed by OC4J. For example: -Dexecutor.concurrent.tasks=12
Note: each timer executes in a separate thread. If the maximum is set too high, resulting in numerous timers executing, then many threads will be used. It is advisable to recycle threads once they finish executing.