根分区满了，不知怎么删除

wstar

把core删掉。
然后看一下oradata下面是不是有一些历史数据备份
如果有可能，把系统重启一下。

lwys620

User home directories can always be moved to other partition (ie, ligang).  

The other ways is if there is free partition:
- failover server group to second node which does not have disk space issue, and freeze service group.
- Copy everything under /usr to another partition (cp -pr, or tar), and rename /usr to something else (in case anything does not work out, you can boot from cdrom to rename it back to /usr.
- modify /etc/vfstab to include /usr entry using this partition.
- reboot system.  If works, remove old_usr which is on root partition.  If not, rename old_usr back to /usr, meanwhile have /usr deleted from vfstab.