Hi!
We are using Torque 3.0, running in a WebLogic Container. Our application is using
Struts for the GUI, and a combination of Torque and entity beans for persistence. We
use Torque for semi-static data.
It all behaved beautifully until we started load testing. We find that once the number
of concurrent threads approach the size of the db connection pool, the threads die, or
receive null pointer connection objects. It happens when client thread performs a
save() on a generated Object.
I've been trying these types of pools, with various resulting behaviours
org.apache.torque.dsfactory.Jdbc2PoolDataSourceFactory:
The threads die, to never wake up again
org.apache.torque.dsfactory.JndiDataSourceFactory:
Received null pointer connections
org.apache.torque.dsfactory.TorqueDataSourceFactory:
Received null pointer connections, see below
java.lang.NullPointerException: Connection object was null. This could be due to a
misconfiguration of the DataSourceFactory. Check the logs and Torque.properties to
better determine the cause.
at org.apache.torque.util.Transaction.rollback(Transaction.java:179)
at org.apache.torque.util.Transaction.safeRollback(Transaction.java:221)
at
com.telenor.mobil.content.ekspress.business.om.BaseNotification.save(BaseNotification.java:495)
at
com.telenor.mobil.content.ekspress.business.om.BaseNotification.save(BaseNotification.java:470)
at
com.telenor.mobil.content.ekspress.test.loadtest.TestNotification.run(TestNotification.java:33)
Has anyone else experienced this kind of problem?
Regards, Simen Sommerfeldt
<-----------------------snip----------------------------->
(Below is the code for the threads in the test program that we wrote to provoke the
error outside of Weblogic):
public void run() {
for (int i = 0; i < (count); i++) {
Notification no = new Notification();
try {
// Set some random data
// Keys are generated automatically through the broker thread
no.setMerchantId(1000);
no.setNotificationType((byte)0);
no.setNotificationInterval((byte)0);
no.setNotificationAddress(Integer.toString(threadIndex) + " " +
Integer.toString(count));
System.out.println("Before saving " + threadIndex);
no.save();
System.out.println("After saving " + threadIndex);
no=null;
sleep(delay);
} catch (TorqueException e) {
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
}
}
}
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