Issue while polling in clustered environment.

Hi All,
I am using a polling adapter which polls records from two database tables. I have set Database rows per transaction as 10 and polling interval as 30 secs. Our servers are running in clustered mode.
The issue is that, when the rows are picked by node 1 , without waiting for the polling interval node 2 picks up the next set of rows from database.
As per our requirement, rows should be polled according to the value of Database rows per transaction size. Then adapter should wait for the polling interval and then pick up the next set of rows (in the clustered environment only). Can it be achieved using custom SQL or some java code. If anyone has tried it please help me.
Thanks in advance.

See this is misconception that both nodes picks the data in turn one by one.
It totally depends on the availability of the nodes. This is how a typical active active cluster should behave.
Both nodes will show similar set of instances as they are pointing to same soa_infra schema.
We can not differentiate by checking EM that which node actually processed a particular instances.
I would like to know how are you sure that both nodes are picking file one by one without waiting other one to complete its job.
I have experience with Active active cluster with uses of DB Adapter in many scenarios. But I never observed this behavior.
Probably by understanding your applications architecture, answer to your problem can be found.
Thanks,
Ashu

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