ORA-24069

Error: ORA-24069: cannot downgrade queue table string while it is being upgraded

Causa: An attempt was made to downgrade a queue table, but a previous command to upgrade the queue table has not yet completed successfully.

Acción: Complete the upgrade of the queue table by re-executing the DBMS_AQADM.MIGRATE_QUEUE_TABLE procedure. Then, downgrade the queue table.