[oracle@db ~]$ sqlplus / as sysdba

SQL*Plus: Release 10.2.0.4. - Production on Thu Dec  ::

Copyright (c) , , Oracle.  All Rights Reserved.

ERROR:

ORA-09925: Unable to create audit trail file

Linux-x86_64 Error: 30: Read-only file system

Additional information: 9925

ORA-: Unable to create audit trail file

Linux-x86_64 Error: : Read-only file system

Additional information: 

Enter user-name:

ERROR:

ORA-: invalid username/password; logon denied

Enter user-name:

ERROR:

ORA-: invalid username/password; logon denied

SP2-: unable to CONNECT to ORACLE after  attempts, exiting SQL*Plus

-rwx------  oracle oinstall       Jan    onsctl

-rwxr-xr-x  oracle oinstall         Nov     oracg

-rwsr-s--x 1 oracle oinstall 112468376 Jan 15  2013 oracle

-rwxr-x---  oracle oinstall          Mar    oracleO

-r-sr-s--- 1 root   oinstall     14931 Mar 11  2008 oradism

-rwxr-x---  oracle oinstall          Mar    oradismO

[oracle@db bin]$ chmod  /u01/app/oracle/product/10.2./bin/oracle

chmod: changing permissions of `/u01/app/oracle/product/10.2./bin/oracle': Read-only file system

[oracle@db bin]$ 

[root@db ~]# mount

/dev/mapper/LVMgroup-root on / type ext3 (rw)

proc on /proc type proc (rw)

sysfs on /sys type sysfs (rw)

devpts on /dev/pts type devpts (rw,gid=,mode=)

/dev/sda1 on /boot type ext3 (rw)

tmpfs on /dev/shm type tmpfs (rw)

none on /proc/sys/fs/binfmt_misc type binfmt_misc (rw)

sunrpc on /var/lib/nfs/rpc_pipefs type rpc_pipefs (rw)

mount: warning /etc/mtab is not writable (e.g. read-only filesystem).

       It's possible that information reported by mount(8) is not

       up to date. For actual information about system mount points

       check the /proc/mounts file.

[root@db ~]# cat /proc/mounts

rootfs / rootfs rw

/dev/root / ext3 ro,data=ordered

/dev /dev tmpfs rw

/proc /proc proc rw

/sys /sys sysfs rw

/proc/bus/usb /proc/bus/usb usbfs rw

devpts /dev/pts devpts rw

/dev/sda1 /boot ext3 rw,data=ordered

tmpfs /dev/shm tmpfs rw

tmpfs /dev/shm tmpfs rw

none /proc/sys/fs/binfmt_misc binfmt_misc rw

sunrpc /var/lib/nfs/rpc_pipefs rpc_pipefs rw

/etc/auto.misc /misc autofs rw,fd=,pgrp=,timeout=,minproto=,maxproto=,indirect

-hosts /net autofs rw,fd=,pgrp=,timeout=,minproto=,maxproto=,indirect  

[root@db ~]# dmesg

EXT3-fs error (device dm-) in ext3_reserve_inode_write: Journal has aborted

EXT3-fs error (device dm-) in ext3_reserve_inode_write: Journal has aborted

sd :::: timing out command, waited 1080s

sd :::: SCSI error: return code = 0x06000008

end_request: I/O error, dev sda, sector

EXT3-fs error (device dm-) in ext3_reserve_inode_write: Journal has aborted

************

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[root@db ~]# fsck

fsck 1.39 (-May-)

e2fsck 1.39 (-May-)

/dev/LVMgroup/root: recovering journal

fsck.ext3: Bad magic number in super-block while trying to re-open /dev/LVMgroup/root

e2fsck: io manager magic bad!
[root@db ~]# 

[root@db ~]# df -h

-bash: df: command not found

[root@db ~]# reboot

-bash: reboot: command not found