How to fix the Oracle error PGA-20911: update transaction is already active with TP string at LU string?

In this post, you’ll learn more about the Oracle ErrorPGA-20911: update transaction is already active with TP string at LU string with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

PGA-20911: update transaction is already active with TP string at LU string

Reason for the Error PGA-20911: update transaction is already active with TP string at LU string

Cause: Transaction has already been started at LU by a PGAINIT call with synclevel set to 1 or 2. Only one transaction at synclevel 1 or 2 is allowed at any given time.

How to fix the Error PGA-20911: update transaction is already active with TP string at LU string ?

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

Action: The new transaction is not started. Change your application to start the second update transaction after the first one has completed, or to use a different gateway database link for the second update transaction.