How to fix the Oracle error ORA-24057: cannot define subscriber with rule for queue string?

In this post, you’ll learn more about the Oracle ErrorORA-24057: cannot define subscriber with rule for queue string with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-24057: cannot define subscriber with rule for queue string

Reason for the Error ORA-24057: cannot define subscriber with rule for queue string

An ADD_SUBSCRIBER or ALTER_SUBSCRIBER procedure with a rule was issued on a queue for which rule based subscribers are not supported. Rule based subscribers currently are supported only for NORMAL (persistent) multi-consumer queues created using an Oracle release 8.1.0 or higher compatible queue table.

How to fix the Error ORA-24057: cannot define subscriber with rule for queue string ?

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

Create a NORMAL multi-consumer queue in an Oracle release 8.1.0 or higher compatible queue table, and retry the call. Or, if the queue is a normal (persistent) multi-consumer queue, convert the queue table to Oracle 8.1.0 or higher compatibility and retry.