How to fix the Oracle error ORA-26518: push queue synchronization error detected?

In this post, you’ll learn more about the Oracle ErrorORA-26518: push queue synchronization error detected with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-26518: push queue synchronization error detected

Reason for the Error ORA-26518: push queue synchronization error detected

Client tried to repush a transaction has already been committed at the master site. A common cause of this problem is an error at the local site in initializing or updating the local site transaction sequence mechanism.

How to fix the Error ORA-26518: push queue synchronization error detected ?

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

Verify that transaction data that RepAPI was attempting to repushed to the master site exists at the master table and is valid and consistent with the local site. If this error occurs, redundantly identified transactions are ignored and then purged from the local updatable materialized view logs. Check that the local site is correctly assigning new transactionIDs and is not accidently generating non-unique values.