JBOSS EJB Timers, delete multiple copies.

[dsteel100]

I have moved from GlassFish in the past couple of days and I am using JBoss 6 and JBoss Developer Studio (30 day trail) to see if this is the way to go. 

I have created a Session Bean that is as follows:

@Stateless
@LocalBean
public class FileMonitorTimer {

    @Schedule(second = "*/15", minute = "*", hour = "*", dayOfMonth = "*", month = "*", year = "*")
    public void ProcessFiles() {

        //do bits here
    }

Every time I run the project from the IDE I get another timer instance created, so my questions are:

How do I remove multiple timer copies?

How do I ensure only one timer exists?

I didn't have this issue with GlassFish, but the code is the same.

Dave

[jaikiran]

It's a bug we have in AS 6.x. We have that fixed in AS7.

A workaround is to mark the @Schedule with persistent=false attribute. For already created timers, clean the JBOSS_HOME/server/<servername>/data folder (one time) before setting that persistent=false flag.

[saranganajwala]

Does this suggest that persistent timers are not stable in JBoss6.1GA?

We are occassionally facing following errors while trying to trigger a timer (persistent and non-persistent both types):

Any workarounds/solutions will be highly appreciated.

javax.ejb.EJBException: javax.transaction.RollbackException: ARJUNA-16083 Can't register synchronization because the transaction is in aborted state

..................

2012-01-05 03:03:36,876 WARN  [org.hibernate.util.JDBCExceptionReporter] (pool-11-thread-10) SQL Error: 0, SQLState: null

2012-01-05 03:03:36,876 ERROR [org.hibernate.util.JDBCExceptionReporter] (pool-11-thread-10) Transaction is not active: tx=TransactionImple < ac, BasicAction: 0:ffff870a3d12:126a:4f0450a2:43 status: ActionStatus.ABORTED >; - nested throwable: (javax.resource.ResourceException: Transaction is not active: tx=TransactionImple < ac, BasicAction: 0:ffff870a3d12:126a:4f0450a2:43 status: ActionStatus.ABORTED >)

2012-01-05 03:03:36,878 ERROR [org.jboss.ejb3.tx2.impl.CMTTxInterceptor] (pool-11-thread-10) javax.ejb.EJBTransactionRolledbackException: org.hibernate.exception.GenericJDBCException: Cannot open connection