root mountpoint size getting bigger
 

Hi,

OS Version : Redhat 5.6 64 bit

My Linux machine's root mount point size is getting bigger. I don't know what is the root cause? Where I can I check which files are occupying more space?

[root@ebsdb ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/sda2 20G 19G 130M 100% /
/dev/sdc1 97G 38G 55G 42% /u01
/dev/sda1 99M 15M 80M 16% /boot
tmpfs 7.9G 194M 7.7G 3% /dev/shm
/dev/sde1 158G 148G 2.3G 99% /u02
/dev/sdi1 247G 155G 79G 67% /u03
[root@ebsdb ~]#

See I allocated root mount point for /dev/sda2 20GB but here only 130MB space reamining there. Why root mount point need 20GB , please advise me what should i do? This is Oracle database server

You've got an oracle db server with a partition layout as simple as that?? That's really not good. /usr and /home and /var really should have been separate partitions to prevent you getting in a situation as dangerous as this.

Anyway, to find where the space has gone, *MY* preference is usually to do something like "du -xh --max-depth=1 /" to get the size of only the first level of directories, and gradually dig deeper and deeper. easier to put the size of all the same level of directory into context I find.

See the output
[root@ebsdb ~]# du -xh --max-depth=1 /
83M /root
96K /tmp
12K /mnt
4.0K /u03
2.0K /boot
0 /sys
672K /home
46M /sbin
16K /lost+found
8.0K /selinux
0 /misc
4.0K /u02
111M /etc
8.0K /media
0 /dev
27M /lib64
4.0K /u01
159M /lib
0 /proc
0 /net
100M /var
18M /opt
8.0K /srv
100K /tftpboot
2.8G /usr
4.0K /install
7.8M /bin
3.4G /

Total 3.4 GB , but my root mount point / total size 20GB but now it's showing 130m free space, So Where is the remaining space for this hard disk ? How did linux occupied this space ?

Sounds like you've deleted a file that's still in use. If so, you can restart the service or whatever has that file open and the space should come back. badly configured logfile rotation is often a culprit for this.

run "lsof | grep deleted" and look for large entries there.

Thanks for your idea, I think I am now in right path, let me check and come back to you

I restarted the server also, Still I am getting very less size only

if you restarted the entire machine, the space should either have been freed, or clearly used up in the du output.

Thank you.