How to fix the Oracle error ORA-24012: cannot drop QUEUE_TABLE, some queues in string have not been dropped?

In this post, you’ll learn more about the Oracle ErrorORA-24012: cannot drop QUEUE_TABLE, some queues in string have not been dropped with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-24012: cannot drop QUEUE_TABLE, some queues in string have not been dropped

Reason for the Error ORA-24012: cannot drop QUEUE_TABLE, some queues in string have not been dropped

A queue exists in the queue table which has not been dropped. All queues need to be dropped first.

How to fix the Error ORA-24012: cannot drop QUEUE_TABLE, some queues in string have not been dropped ?

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

Drop all queues belonging to this queue table using the drop_queue() command. Be sure to stop the queues appropriately before dropping them. Alternately, use the force option in drop_queuetable.