IS 7.1.2 - Tasks disappearing from Scheduler

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Hello everybody,

we are observing strange phenomena on our customer’s production environment with tasks disappearing from the scheduler.

There is a service that creates tasks to resubmit documents to users after a selectable interval of time (1 to 7 days), when the user clicks the respective button in the frontend.

For some reason sometimes a task disappears from the scheduler and therefore the document to which it belongs does not get resubmitted. There is no recognizable pattern as to why and when a task vanishes.

Does somebody have any ideas what can cause Integration Server (or any other component) to delete a task from the scheduler.

I have no idea where to start my search to solve that problem. :confused:

Thank you very much in advance

Sascha

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are these tasks scheduled to run in Cluster?

3

Uhm, I guess so. They were originally designed in a 1-server-environment but the customer runs IS in a cluster, yes.

So, could this be a hint?

Thanks
Sascha

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I believe there’s fix for scheduler issue in 7.1.2. Check out IS fixes, i don’t remember the exact fix name…

5

Thanks for the reply. I will check on that.

6

I could find documentation to several issues in 7.1.2 concerning the scheduler in the context of a cluster environment, but nothing that matches my problem with tasks disappearing.

Any more ideas?

7

These scheduled jobs are stored in database. You might want to check your JDBC Pools and investigate it from that end too.

8

Are these tasks created by the front end are of type:Run Once? If so then these will be cleared off by the IS after the time specified in the properties of the task.

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The tasks are created by a flow service, which is called through a web service from the frontend.

Yes, these are one-off tasks that might be cleared once they are “Expired” but they disappear at random while still being active.

10

For some reason this phenomenon has stopped occurring.

I don’t know if the customer’s admin is telling me everything they do there. But today he said that this problem hasn’t come back for more than a week now.

As it is not reproducible anymore, I’d say we can close this case.

Thanks to all who tried to help!

Sascha

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