I am running 3.0.7 and have 30 Entity Beans and 8 or so MDBs. What I have done
is put a Thread.sleep(5000) in my MDB's before they call a generic ping on the
session beans. The ping forces the session beans to start which also starts a
bunch of my logic that calls entity beans. If the beans are not ready then I
get the same error. Note that you make need a longer sleep time if you have
more entity, session and mdbs. Below is the meat of making the MDB wait:
public void startService() throws Exception {
new UpdateThread().start();
setUpReceiver();
}
private class UpdateThread extends Thread {
private final static int sleepTime = 5000;
public UpdateThread() {
this.setPriority(Thread.MIN_PRIORITY);
}
public void run() {
try {
this.sleep(sleepTime);
} catch (java.lang.InterruptedException e) {
//e.printStackTrace();
}
try {
touchStateDBSession();
} catch(Exception e) {
System.out.println("StateDBCleanService.UpdateThread.run() -
Error="+e.getMessage());
}
}
}
private void touchStateDBSession() {
InitialContext lContext = null;
StateDBSessionHome stateDBSessionHome = null;
StateDBSession stateDBSession = null;
try {
lContext = new InitialContext();
stateDBSessionHome = (StateDBSessionHome)
lContext.lookup("ejb/StateDBSession");
stateDBSession = (StateDBSession)stateDBSessionHome.create();
stateDBSession.ping();
} catch(Exception fe) {
fe.printStackTrace();
} finally {
if(stateDBSession!=null) {
try {
stateDBSession.remove();
} catch(Exception e) { }
stateDBSession = null;
}
stateDBSessionHome = null;
if(lContext!=null) {
try {
lContext.close();
} catch(Exception e) { }
lContext = null;
}
}
}
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