Hello experts ,

Actually i'am on linux redhat 6.4 enterprise and i would like to resize /dev/sdb2 partition ,this partion is not LVM .however i added space into the disk /dev/sdb but i found too complicate to resize my sdb2 partition ./dev/sdb2 contain an FS for oracle database and i'm affraid to lose data .pleaaaaase help

How did you add space to /dev/sdb? Is it a virtual disk or a SAN disk that you grew? Is there a /dev/sdc already?

its a virtual disk , so i dded space directly from vcenter console , there is no sdc disk !

First you should backup before try anything. (And should be doing regular backups anyway.)

It seems you should be able to use fdisk or parted to increase the space of partition 2 to the new size. Just make sure fdisk -l /dev/sdb is showing the new space you added. Partitioning does not do a low level format so shouldn't cause a problem but I use LVM so haven't needed to do this.

You'd then just resize the filesystem that is using partition /dev/sdb2 (e.g. using resize2fs or resize4fs for ext2/ext3 or ext4 filesystems).

The post here seems to describe what you need to do:
http://geekpeek.net/resize-filesystem-fdisk-resize2fs/

Then make backups. Filesystem operations like resizing can fail at any time, so you have to have a backup before doing anything (you should have them in any case also when not doing system critical stuff, if your harddisk dies tomorrow you also will loose your data).

Anyways, to help you we need more information from you:
- which type of disk
- actual disk layout, provide the output of - filesystem in use on that partition

-its a scsi disk
-# fdisk -l

Disque /dev/sda: 37.6 Go, 37580963840 octets
64 têtes, 32 secteurs/piste, 35840 cylindres
Unités = cylindres de 2048 * 512 = 1048576 octets
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Identifiant de disque : 0x0004b19c

Périphérique Amorce Début Fin Blocs Id Système
/dev/sda1 * 2 501 512000 83 Linux
La partition 1 ne se termine pas sur une frontière de cylindre.
/dev/sda2 502 35840 36187136 8e Linux LVM
La partition 2 ne se termine pas sur une frontière de cylindre.

Disque /dev/sdb: 391.9 Go, 391915765760 octets
255 têtes, 63 secteurs/piste, 47647 cylindres
Unités = cylindres de 16065 * 512 = 8225280 octets
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Identifiant de disque : 0x0007d932

Périphérique Amorce Début Fin Blocs Id Système
/dev/sdb1 1 522 4192933+ 82 Linux swap / Solaris
/dev/sdb2 523 26762 210765115 83 Linux

Disque /dev/dm-0: 34.9 Go, 34938552320 octets
255 têtes, 63 secteurs/piste, 4247 cylindres
Unités = cylindres de 16065 * 512 = 8225280 octets
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Identifiant de disque : 0x00000000

Le disque /dev/dm-0 ne contient pas une table de partition valide

Disque /dev/dm-1: 2113 Mo, 2113929216 octets
255 têtes, 63 secteurs/piste, 257 cylindres
Unités = cylindres de 16065 * 512 = 8225280 octets
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Identifiant de disque : 0x00000000

Le disque /dev/dm-1 ne contient pas une table de partition valide

any feedback !! i followed the link bellow without result

Did you do a rescan on the dis and do you see the new size?