ALTER DATABASE COMMIT TO SWITCHOVER TO PRIMARY fails with ORA-16139 when trying to switchback
Last updated on NOVEMBER 21, 2017
Applies to:Oracle Database - Enterprise Edition - Version 10.2.0.1 to 188.8.131.52 [Release 10.2 to 11.1]
Information in this document applies to any platform.
- Data Guard Physical Standby Database Setup
- A Switchover was executed making the original Primary Database the new Standby
- For some Reason the new Primary is rendered unusable before there was any Activity, i.e. before any new Redo was generated and shipped to the new Standby
- Trying to reinstate the original Primary Database (now in Standby Mode) using the Command 'ALTER DATABASE COMMIT TO SWITCHOVER TO PRIMARY;' fails with Error:
ORA-16139 media recovery required
Switchover to Standby.
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