hi,
i have redhat 5.8 on 32bits
Why my Linux server ext3 filesystem go read-only?

probably the filesystem was corrupted. check /var/log and dmesg about related messages

Some more information would be useful.

Which filesystem?
How do you know it's readonly?
Is the server in multi-user mode or does it stop in single-user?
And generally the context.

Probably because you told it to - check fstab.

when i reboot the server my file system are not in read-only!!!!!!!!

Well - if they are not read-only, everything is fine, right?
Or perhaps they are read-only, but then please tell us more.

• All filesystems?
• The root filesystem?
• A different filesystem?
• How do you know your filesystem(s) is/are read-only?
• How far does the boot process go - single user? multi-user?
• Any error message?
• What's the output of the mount command (no parameters - just type mount).

And whatever context you can provide.

hi berndbausch and thanks for your reply,

-All filesystems? ===> NO
-The root filesystem? ===>NO
-A different filesystem?===> YES
-How do you know your filesystem(s) is/are read-only?===> when i attempt to open Oracle database i get error that the file system where the alert log is read-only and the database is not open
-How far does the boot process go - single user? multi-user? ===> multi user
- What's the output of the mount command (no parameters - just type mount).===> mount show that all partitions are rw (but don't forget that i rebooted the server and i haven't' yet the read-only disk).

regards

have you checked your logfiles already? Do you know the information you gave is not enough to find the reason.

You haven't yet the read-only disk? Perhaps this is the problem - it might not be mounted at all, which causes Oracle's error message.

A few suggestions what you can do, easy actions first:

• Give us the complete and precise error message. Perhaps you are interpreting it wrongly.
• Is the filesystem mounted? If not, mount it.
• Check if it's mounted rw and if the error still occurs
• As root, try to create a file on that filesystem. If this works, the filesystem is not read-only.
• Are you running Red Hat or a Red Hat clone? Perhaps the problem is related to SELinux. To check, set SELinux from enforcing to permissive and try again. The command to do that is setenforce.
• Check permissions of the Oracle alert log
• Can you configure Oracle to produce more verbose error messages? If yes, do it and tell us what Oracle says.