I try to schedule a recurring connection to a database using JBoss's Quartz. The project is a Seam exploded WAR. The persistence.xml file is located in deploy/<project>/WEB-INF/classes/META-INF (when in <project>/META-INF the behaviour is the same). Normal connection to the DB works fine. However, when the Quarts job is executed, I get:

14:12:15,919 INFO [Ejb3Configuration] Could not find any META-INF/persistence.xml file in the classpath
14:12:15,921 ERROR [JobRunShell] Job DEFAULT.myJob threw an unhandled Exception:
javax.persistence.PersistenceException: No Persistence provider for EntityManager named myProject
at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:56)
at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:34)
at pl.ds.session.PacketManager.updatePackets(PacketManager.java:47)
at pl.ds.session.UpdatePacketsJob.execute(UpdatePacketsJob.java:10)
at org.quartz.core.JobRunShell.run(JobRunShell.java:203)
at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:520)

The line that causes the error is:
EntityManagerFactory emf = Persistence.createEntityManagerFactory("myProject");

Clearly the persistence.xml file seen in the project's classpath is not seen in quartz's. The workaround is to update Quartz in JBoss:
In deploy directory:

• remove quartz-ra.rar
• add quartz-services.xml

<?xml version="1.0" encoding="UTF-8"?> <server>
<mbean code="org.quartz.ee.jmx.jboss.QuartzService"
name="user:service=QuartzService,name=QuartzService">
<attribute name="JndiName">java:/Quartz</attribute>
<attribute name="Properties">
org.quartz.scheduler.instanceName = DefaultQuartzScheduler
org.quartz.scheduler.rmi.export = false
org.quartz.scheduler.rmi.proxy = false
org.quartz.scheduler.xaTransacted = false
org.quartz.threadPool.class = org.quartz.simpl.SimpleThreadPool
org.quartz.threadPool.threadCount = 5
org.quartz.threadPool.threadPriority = 4
org.quartz.jobStore.class = org.quartz.simpl.RAMJobStore
</attribute>
</mbean>
</server>

In lib directory:

• add quartz-all-1.6.5.jar (download from quartz's site)

This issue is related to JBAS-6133.