Thanks for the response Steve...It was really helpful:
Below are some doubts I wanted to clarify..please read and suggest. Can we also check if replication was broken earlier...somehow due to power failure of some other reasons in past...The reason I am asking is I am getting some discrepancies in data between master and slave...? I want to know the reason of it...
What sort of discrepancies? I am unaware of situations in a properly configured and functioning system where the standby could be anything other than lagging the master but I didn't dig through release notes to see if there were any related bugs.