In this post, you’ll learn more about the Oracle ErrorORA-12802: parallel query server lost contact with coordinator with the details on why you receive this error and the possible solution to fix it.
Oracle Error Description
ORA-12802: parallel query server lost contact with coordinator
Reason for the Error ORA-12802: parallel query server lost contact with coordinator
A parallel query server lost contact with the foreground (coordinator) process/thread.
How to fix the Error ORA-12802: parallel query server lost contact with coordinator ?
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.