ORA-00205: error in identifying controlfile, check alert log for more info

Hi,

I am having 3 control files at location as per the init.ora file. Today moring I found database was down, when trying to startup, got an error "ORA-00205: error in identifying controlfile, check alert log for more info".


Alert.log
=========================

Thu Apr 24 07:53:35 2009
Errors in file /oracle/abcdb/9.2.0/admin/bdump/abc_ckpt_3147.trc:
ORA-00206: error in writing (block 3, # blocks 1) of controlfile
ORA-00202: controlfile: '/oracle/data/cntrl03.dbf'
ORA-27072: skgfdisp: I/O error
Linux Error: 30: Read-only file system
Additional information: 2
ORA-00206: error in writing (block 3, # blocks 1) of controlfile
ORA-00202: controlfile: '/oracle/data/cntrl02.dbf'
ORA-27072: skgfdisp: I/O error
Linux Error: 30: Read-only file system
Additional information: 2
ORA-00206: error in writing (block 3, # blocks 1) of controlfile
ORA-00202: controlfile: '/oracle/data/cntrl01.dbf'
ORA-27072: skgfdisp: I/O error
Linux Error: 30: Read-only file system
Additional information: 2


I was trying to create a controlfile from the script present at alert.log as CREATE CONTROLFILE REUSE SET DATABASE "ABC", but got the same error ORA-00205.

Pls suggest me.

Thanks,
gohappy

ORA-00206: error in writing (block 3, # blocks 1) of controlfile
ORA-00202: controlfile: '/oracle/data/cntrl03.dbf'
ORA-27072: skgfdisp: I/O error
Linux Error: 30: Read-only file system

Isn't the reason obvious?

Thanks Ales,

The file permision for control file is " -rw-r----- ". Could you pls tell me what should be the file permission for control file...



Cheers,
gohappy

The file permissions don't change by oneself.
Check if the filesystem is mounted read-write (mount command).

Quote:

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Originally Posted by gohappy

Thanks Ales,

The file permision for control file is " -rw-r----- ". Could you pls tell me what should be the file permission for control file...



Cheers,
gohappy

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IT SHOULD READ-WRITE, NOT READ-ONLY. :p