How to fix the Oracle error PGA-21200: connect to Oracle Server as string failed?

In this post, you’ll learn more about the Oracle ErrorPGA-21200: connect to Oracle Server as string failed with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

PGA-21200: connect to Oracle Server as string failed

Reason for the Error PGA-21200: connect to Oracle Server as string failed

Cause: The RRM was unable to connect as user to the Oracle server where its LU6.2 log information is stored. An Oracle server message will follow this message.

How to fix the Error PGA-21200: connect to Oracle Server as string failed ?

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

Action: Ensure that the Oracle server and its TNS listener are both operational. Also check the LOG_DB, LOG_USER, and LOG_PASS parameters in the RRM init file and ensure that they specify the correct database string, userid, and password, respectively.