Help on recovering my standby

Hi I have my standby (streaming replication) down due to missing wal files. You would see the same error in the logs stating "cannot find the wal file ..."
What is the best way to get it going so that when we switch between standby and primary once in a while they are in sync?

Currently I am working on a CERT server and hence there is no outage concerns. I need to repeat the same process on prod once I get it going successfully. Any help is appreciated.

Thanks
Kumar Ramalingam
Global Database Administration
Elavon, Atlanta , GA

678 731 5288

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