My Oracle Support Banner

Unable to open the database in read only mode after restore/recovery (Doc ID 316154.1)

Last updated on JANUARY 30, 2020

Applies to:

Oracle Database - Enterprise Edition - Version 8.1.7.4 to 11.2.0.2 [Release 8.1.7 to 11.2]
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Information in this document applies to any platform.



Purpose

This article address the reasons behind failure of opening the database in read only mode. It discuss the ways to open the database in read only mode.

Scope

This is intended for DBA and Oracle Support personnel.

Details

To view full details, sign in with your My Oracle Support account.

Don't have a My Oracle Support account? Click to get started!


In this Document
Purpose
Scope
Details
 Case 1:  When database is mounted using current controlfile , datafiles are restored from  cold backup
 Case 2:  When controlfile is recreated and datafiles are restored from cold backup.
 Case 3:  When controlfile is from earlier cold backup than datafiles.
 Case 4:  READ ONLY tablespaces, which never have switched to READ WRITE after a RESETLOGS

My Oracle Support provides customers with access to over a million knowledge articles and a vibrant support community of peers and Oracle experts.