CODEWITHSUNDEEP
javajpaejbwebsphere
Billy8988
Billy8988

Reputation: 29

Long running scheduler throws exception accessing jpa/ejb object

I have a scheduler object to do some errands. It looks like this

@Singleton
public class BackgroundScheduler
{
    @EJB(beanName = "myPersistenceService")
    private PersistenceService dbService;   //persistence object to do some db inserts


    //runs every 30 minutes 
    @Schedule(hour="*", minute="*/30", second="0", persistent=false)
    public void BackgroundJob()
    {
        logger.debug("Waking up to do to chores");
        DoChores();
    }

    private void DoChores()
    {
        entityObj entity;
        //do some stuff here
        doStuff();

        //write to db
        dbService.writeStuff(entity);
    }
}

This works fine as long as doStuff() is done in 5 minutes. When doStuff() takes more than that, I get an exception at dbService.writeStuff(entity)

[9/24/19 20:35:09:993 EDT] 000000b6 BusinessExcep E   CNTR0020E: EJB threw an unexpected (non-declared) exception during invocation of method "writeStuff" on bean "BeanId(MYAPPEJB.jar#myPersistenceService, null)". Exception data: javax.persistence.TransactionRequiredException: No active transaction for PuId=MYAPPEJB.jar#APPCMN
    at com.ibm.ws.jpa.management.JPATxEntityManager.getEMInvocationInfo(JPATxEntityManager.java:233)
    at com.ibm.ws.jpa.management.JPATxEntityManager.getEMInvocationInfo(JPATxEntityManager.java:191)
    at com.ibm.ws.jpa.management.JPAEntityManager.persist(JPAEntityManager.java:143)

I tried @TransactionAttribute(TransactionAttributeType.NOT_SUPPORTED) on both (BackgroundScheduler and myPersistenceService). I have set "Total Transaction lifetime timeout" (Application servers<>transaction service) to 0. I also tried setting connection pool timeout to 0.

I am out of ideas as to which timeout settings is causing this.

Any help would be appreciated. Thanks.

Upvotes: 1

Views: 192

Answers (1)

njr
njr

Reputation: 3484

When you set "total transaction lifetime timeout" to 0, it then defers to the "maximum transaction timeout" which has default of 300 seconds, or 5 minutes. Refer to this documentation. Try increasing this value.

Upvotes: 1

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