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Receiving ORA-313 and ORA-312 errors when trying to open database
I have a cold backup of my Oracle 9i database. Recently, I tried to start it up but the database could not be opened. I decided to use the cold backup to restore the database, but the problem remained.
I already have a cold backup of my Oracle 9i database. Recently, I tried to start it up but the database was not able to reach open state (it can only be in mount state). So I decided to use the cold backup to restore the database. I shut down the database, then I removed all dbf, ctl and redo files from their location, then I copied them back from the cold backup. Unfortunately, when I tried to start up the database, the problem remained and the database could not be opened.
This is the output I've got:
SQL> startup ORACLE instance started.
Total System Global Area 135352820 bytes
Fixed Size 455156 bytes
Variable Size 109051904 bytes
Database Buffers 25165824 bytes
Redo Buffers 679936 bytes
Database mounted.
ORA-00313: open failed for members of log group 1 of thread 1
ORA-00312: online log 1 thread 1: '/oracle/oradata/SIEMENS/redo01.log'
Thank you for your help.
The following is the cause of your problem. The ORA-313 error is simply telling you that a redo log file cannot be accessed. The ORA-312 message is telling you which file cannot be opened. There could be a couple of reasons why you are getting this error.
- The file simply does not exist.
- There is a hardware error stopping Oracle from accessing this file.
- Oracle does not have appropriate permissions to read the file or its directory.
- There is corruption in the log file.
You'll have to determine which one of these causes is the real problem and solve it appropriately.
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