2010/1/23 Karthik Nanjangude karthik.nanjang...@xius-bcgi.com:
1) A Custom built web application uses Quartz process ( Kron job)
every 20 minutes to DB (JNDI based Connection pool ) to process some
data on when deployed on single system,
2) The same is deployed on a Apache 2x - tomcat CLUSTER mode as 2
instances on 2 different independent System.
Question: Does each instance of the application be connection to DB every
20 minute based on the Kron -Job Configuration.
Yes. The instances are independent.
If so Is there any way within the Cluster Configuration to prevent this issue?
Not that I am aware of. You will have to design your application
appropriately. For example, could these jobs run every 10 minutes if
both nodes are up rather than every 20? If so, you could code your
app so that one node ran the job at :00, :20 and :40 and the other
node ran it at :10, :30 and :50.
- Peter
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