Sometimes You can get “TNS-12552: TNS:operation was interrupted ” error.
Details of error are as follows.
TNS-12552: TNS:operation was interrupted
This error is related with the Issue is fixed from version 12.1 onwards.
One off patches are available for Patch:9455447
Workaround : Set database parameter _skgxp_udp_timed_wait_seconds=0
_ skgxp_udp_timed_wait_seconds=0 disables the timeout of the LMS processes, so they continue reading messages.
LMS handles messages between the nodes e.g. cache fusion
Typically it waits for acknowledgment of received and sent packets
Disabling the timeout will mean it does not timeout on the acknowledgment , but keeps processing requests, waiting for acknowledgment to arrive.
Only set the parameter to 0 after guidance from Oracle support
Do you want to learn more details about RMAN, then read the following articles.