问题出现情况：在数据库启动的时候：如果出现如下图的错误：

查看官方文档：

处理操作步骤：

 [oracle@localhost orcl]$ su - root

 Password:

 [root@localhost ~]# cd /etc/fstab

 -bash: cd: /etc/fstab: Not a directory

 [root@localhost ~]# cat /etc/fstab

 /dev/VolGroup00/LogVol01 /                       ext3    defaults        1 1

 LABEL=/boot             /boot                   ext3    defaults        1 2

 tmpfs                   /dev/shm                tmpfs   defaults        0 0

 devpts                  /dev/pts                devpts  gid=5,mode=620  0 0

 sysfs                   /sys                    sysfs   defaults        0 0

 proc                    /proc                   proc    defaults        0 0

 /dev/VolGroup00/LogVol00 swap                    swap    defaults        0 0

 [root@localhost ~]# vi /etc/fstab 

 /dev/VolGroup00/LogVol01 /                       ext3    defaults        1 1

 LABEL=/boot             /boot                   ext3    defaults        1 2

 tmpfs                   /dev/shm                tmpfs   defaults        0 0

 devpts                  /dev/pts                devpts  gid=5,mode=620  0 0

 sysfs                   /sys                    sysfs   defaults        0 0

 proc                    /proc                   proc    defaults        0 0

 /dev/VolGroup00/LogVol00 swap                    swap    defaults        0 0

 shmfs /dev/shm tmpfs size=7g 0

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 "/etc/fstab" 8L, 566C written

 [root@localhost ~]# cat /etc/fstab

 /dev/VolGroup00/LogVol01 /                       ext3    defaults        1 1

 LABEL=/boot             /boot                   ext3    defaults        1 2

 tmpfs                   /dev/shm                tmpfs   defaults        0 0

 devpts                  /dev/pts                devpts  gid=5,mode=620  0 0

 sysfs                   /sys                    sysfs   defaults        0 0

 proc                    /proc                   proc    defaults        0 0

 /dev/VolGroup00/LogVol00 swap                    swap    defaults        0 0

 shmfs /dev/shm tmpfs size=7g 0

 [root@localhost ~]# mount -a

 [root@localhost ~]#