ORA-24070: cannot upgrade queue table string while it is being downgraded

文档解释

ORA-24070: cannot upgrade queue table string while it is being downgraded

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

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

ORA-24070 : cannot upgrade queue table string while it is being downgraded

官方解释

Oracle 的系统错误 doo-24070 发生在当您试图在队列表中调整版本，并且调整期间有多个线程正在进行下调时。您必须停止下调活动，然后再尝试升级。

常见案例

一个常见的事件导致 ORA-24070错误是在当同时有多个管理员进程在升级用户定义队列，但另一个应用程序进程仍然在使用旧版本的组件期间发生时。

一般处理方法及步骤

1. 确定并停止正在使用旧版本的组件的应用程序或管理员进程；

2.重新尝试对队列表进行升级。