How to fix the Oracle error PGA-21451: SNA Server is shutting down?

In this post, you’ll learn more about the Oracle ErrorPGA-21451: SNA Server is shutting down with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

PGA-21451: SNA Server is shutting down

Reason for the Error PGA-21451: SNA Server is shutting down

Cause: SNA Server is being shut down and sent a SIGUSR1 to the RRM.

How to fix the Error PGA-21451: SNA Server is shutting down ?

You can fix this error in Oracle by following the below steps

Action: The RRM must terminate when this occurs. Contact the system administrator to determine the cause of the SNA Server shutdown. Restart the RRM after SNA Server has been restarted.