How to fix the Oracle error ORA-09763: osnmpx: send/receive error exchanging Mach ports.?

In this post, you’ll learn more about the Oracle ErrorORA-09763: osnmpx: send/receive error exchanging Mach ports. with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-09763: osnmpx: send/receive error exchanging Mach ports.

Reason for the Error ORA-09763: osnmpx: send/receive error exchanging Mach ports.

The Mach driver failed to exchange port information with the other side of the connection. Either msg_send (sercose[0] == 1) or msg_receive (sercose[0] == 2) failed.

How to fix the Error ORA-09763: osnmpx: send/receive error exchanging Mach ports. ?

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

Check return code in sercerrno. Make sure both sides of the connection are still running.