启动Oracle 11gR2后报错:ORA-00845

          这个错误已经网上已经有很多事例了,我自己做个记录。

启动Oracle 11gR2后报错:ORA-00845

 

rac1:/home/oracle> sqlplus / as sysdba;

SQL*Plus: Release 11.2.0.3.0 Production onTue Feb 14 09:11:41 2012

 

Copyright (c) 1982, 2011, Oracle.  All rights reserved.

 

Connected to an idle instance.

 

SQL> startup

ORA-00845: MEMORY_TARGET not supported onthis system

 

这个错误之前已经处理过,因为tmpfs的大小MEMORY_TARGET的设置,就会报这种错误。

 

处理

[root@localhost ~]#umount tmpfs

(这里可能回报busy,重启一下再umount)

[root@localhost ~]# mount -t tmpfs shmfs -o size=1g /dev/shm (不用重启)

[root@localhost ~]# vi /etc/fstab(这里需要重启生效)

tmpfs                   /dev/shm                tmpfs   defaults,size=1g      0 0 

[root@localhost ~]# df -h
文件系统              容量  已用 可用 已用% 挂载点
/dev/mapper/VolGroup00-LogVol00
                       18G   15G  2.2G  87% /
/dev/sda1              99M   12M   82M  13% /boot
/dev/hdc              2.9G  2.9G     0 100% /media/RHEL_5.3 i386 DVD
shmfs                 1.0G     0  1.0G   0% /dev/shm

[root@localhost ~]# su - oracle

SQL*Plus: Release 11.2.0.1.0 Production on Mon Jun 25 15:00:48 2012

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

Connected to an idle instance.

SQL> startup
ORACLE instance started.

Total System Global Area  422670336 bytes
Fixed Size                  1336960 bytes
Variable Size             281020800 bytes
Database Buffers          134217728 bytes
Redo Buffers                6094848 bytes

 

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