当试图开启备库的flashback功能时报如下错误：

SQL> alter database flashback on;

alter database flashback on

*

ERROR at line 1:

ORA-01153: an incompatible media recovery is active

原因：备库还在应用日志

ORA-1153, 00000, "an incompatible media recovery is active"

// *Cause: Attempted to start an incompatible media recovery or open resetlogs

// during media recovery or RMAN backup . Media recovery sessions

// are incompatible if they attempt to recover the same data file.

// Incomplete media recovery or open resetlogs is incompatible with

// any media recovery. Backup or restore by RMAN is incompatible

// with open resetlogs

// *Action: Complete or cancel the other media recovery session or RMAN backup

解决方法：先停止应用，然后开启闪回，再次开始应用！

SQL> alter database recover managed standby database cancel;

Database altered.

SQL> alter database flashback on;

Database altered.

SQL> alter database recover managed standby database disconnect from session;

Database altered.

ITPub博客

【DataGuarad】ORA-1153 trying to turn on Flashback for Physical Standby Database