How to fix the Oracle error ORA-12804: parallel query server appears to have died?

In this post, you’ll learn more about the Oracle ErrorORA-12804: parallel query server appears to have died with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-12804: parallel query server appears to have died

Reason for the Error ORA-12804: parallel query server appears to have died

Cannot find process information for a parallel query server thread.

How to fix the Error ORA-12804: parallel query server appears to have died ?

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

Check your system for anomalies and reissue the statement. If this error persists, contact Oracle Support Services.