How to fix the Oracle error ORA-25336: Cannot contact instance string during Streams AQ operation?

In this post, you’ll learn more about the Oracle ErrorORA-25336: Cannot contact instance string during Streams AQ operation with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-25336: Cannot contact instance string during Streams AQ operation

Reason for the Error ORA-25336: Cannot contact instance string during Streams AQ operation

The specified instance was not responding to AQ requests.

How to fix the Error ORA-25336: Cannot contact instance string during Streams AQ operation ?

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

Set parameter aq_tm_processes to a non-zero value. If the problem persists, contact Oracle Support Services.