How to fix the Oracle error CLSGN-00177: Invalid packet type received.?

In this post, you’ll learn more about the Oracle ErrorCLSGN-00177: Invalid packet type received. with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

CLSGN-00177: Invalid packet type received.

Reason for the Error CLSGN-00177: Invalid packet type received.

GNS received a packet whose type is unknown.

How to fix the Error CLSGN-00177: Invalid packet type received. ?

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

Check the trace file for details about the failure. It is possible that a malicious user is attempting to send an invalid packet to GNS.