oracle startup 故障:ORA-00845: MEMORY_TARGET


书接上文,oracle startup上文报错解决之后又出现此问题

Oracle 11g的Linux版本在修改了MEMORY_TARGET或者SGA_TARGET后启动可能会报错:

SQL> shutdown immediate
Database closed.
Database dismounted.
ORACLE instance shut down.
SQL> startup
ORA-00845: MEMORY_TARGET not supported on this system



[root@localhost db_1]# df -h /dev/shm //查看/dev/shm大小

Filesystem        Size         Used           Avail          Use%       Mounted  on
tmpfs                   1.0G       260M         1.8G            13%         /dev/shm


[root@localhost db_1]# vi /etc/fstab      //更换/dev/shm默认大小为2G
# /etc/fstab
# Created by anaconda on Tue Nov 13 00:29:16 2012
# Accessible filesystems, by reference, are maintained under '/dev/disk'
# See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info
UUID=607ef5d8-042d-486f-a9a1-e0c8fa434c62 /                       ext4    defaults        1 1
UUID=27992806-1d47-41d8-be71-4300b5756dde /boot                   ext4    defaults        1 2
UUID=b4d786a5-c4f4-4827-a16c-451e750d1e64 /data                   ext4    defaults        1 2
UUID=0a3be703-d30a-493a-b7cf-db998124b6bc /home                   ext4    defaults        1 2
UUID=2e71dc8c-237c-49e4-960d-050e3f93c00c /opt                    ext4    defaults        1 2
UUID=ffedd612-bdc0-4c4f-a811-2703c87ee817 /tmp                    ext4    defaults        1 2
UUID=40b8c5d5-7356-4fc2-bdb5-332790177c1d /usr                    ext4    defaults        1 2
UUID=b0bd2554-59dc-4359-8f30-2e8b1ade11e1 /usr/local              ext4    defaults        1 2
UUID=28335a28-7724-4708-87d6-f9ba1573bca1 /var                    ext4    defaults        1 2
UUID=9d0fa977-91c7-4ce2-926f-fefba2cf7f4f swap                    swap    defaults        0 0
tmpfs                   /dev/shm     tmpfs   defaults,size=2048M  0 0
devpts                  /dev/pts                devpts  gid=5,mode=620  0 0
sysfs                   /sys                    sysfs   defaults        0 0
proc                    /proc                   proc    defaults        0 0

//注:本行defaults,size=10240M 中间无空格

[root@localhost db_1]#umount /dev/shm

[root@localhost db_1]#mount /dev/shm

查看tmpfs 大小

[root@localhost db_1]# df -lh
Filesystem            Size  Used Avail Use% Mounted on
/dev/sda2             9.9G  418M  9.0G   5% /
tmpfs                 2.0G  260M  1.8G  13% /dev/shm
/dev/sda1             146M   28M  111M  20% /boot
/dev/sda11             36G  5.8G   28G  18% /data
/dev/sda8             5.0G  4.7G   37M 100% /home
/dev/sda3             9.9G  152M  9.2G   2% /opt
/dev/sda9             5.0G  531M  4.2G  12% /tmp
/dev/sda5             9.9G  2.2G  7.2G  24% /usr
/dev/sda6             9.9G  151M  9.2G   2% /usr/local
/dev/sda7             9.9G  328M  9.1G   4% /var
tmpfs                 2.0G  260M  1.8G  13% /dev/shm

修改/etc/fstab,重新mount /dev/shm,然后就可以启动数据库了。

[oracle@localhost db_1]$ su – oracle

[oracle@localhost db_1]$ sqlplus / as sysdba

SQL*Plus: Release Production on Wed Nov 14 06:11:15 2012

Copyright (c) 1982, 2009, Oracle.  All rights reserved.

Connected to:

Oracle Database 11g Enterprise Edition Release – 64bit Production

With the Partitioning, OLAP, Data Mining and Real Application Testing options


ORACLE instance started.

Total System Global Area 4743446528 bytes

Fixed Size 2143824 bytes

Variable Size 3892316592 bytes

Database Buffers 805306368 bytes

Redo Buffers 43679744 bytes

Database mounted.

Database opened




Build by Loppo 0.6.14