How to fix the Oracle error PGA-21212: incorrect data received from partner LU string?

In this post, you’ll learn more about the Oracle ErrorPGA-21212: incorrect data received from partner LU string with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

PGA-21212: incorrect data received from partner LU string

Reason for the Error PGA-21212: incorrect data received from partner LU string

Cause: A partner LU has sent incorrect data in its initial communication with the local RRM. The first data received should be an Exchange Log Names (XLN) GDS variable, but was not.

How to fix the Error PGA-21212: incorrect data received from partner LU string ?

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

Action: This error indicates that there is a problem on the partner LU side of the connection. Corrective action must be taken by the system administrator for that LU.