ORA-12961
cannot open database in read/write mode on a read-only instance
Cause
An attempt was made to open the database on a read-only instance under the following two cases:
- User explicitly specified read/write option in the SQL command.
- User forgot to explicitly specify read-only in which case, read/write mode was assumed by default.
Action
Specify the open mode as read-only.
ORA-12961
cannot open database in read/write mode on a read-only instance
Cause
An attempt was made to open the database on a read-only instance under the following two cases:
- User explicitly specified read/write option in the SQL command.
- User forgot to explicitly specify read-only in which case, read/write mode was assumed by default.
Action
Specify the open mode as read-only.
ORA-12961
cannot open database in read/write mode on a read-only instance
Cause
An attempt was made to open the database on a read-only instance under the following 2 cases:
- User explicitly specified read write option in the SQL command.
- User forgot to explicitly specify read-only in which case, read write mode was assumed by default.
Action
User should specify the open mode as read-only.
