ORA-16442: ALTER SYSTEM FLUSH REDO TO STANDBY succeeded, but some redo has not been applied. ORACLE

文档解释

ORA-16442: ALTER SYSTEM FLUSH REDO TO STANDBY succeeded, but some redo has not been applied.

Cause: The target standby database did not apply all received redo.

Action: Allow the target standby database to apply all redo and then reissue the ALTER SYSTEM FLUSH REDO TO STANDBY statement.

该错误消息表明，Oracle数据库可能处于不一致的状态，主站和备站之间的redo可能不同步，即某些redo无法在备份上过防操作执行。

官方解释

常见案例

一般处理方法及步骤