[Oracle] ORA-00845: MEMORY_TARGET not supported on this system
2013-10-21 10:04
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Oracle 11g在启动时报错:
这是因为你设置了MEMORY_TARGET这个参数,这个特性需要用到/dev/shm共享文件系统,而且要求/dev/shm必须大于MEMORY_TARGET,如果/dev/shm比MEMORY_TARGET小就会报错。
从什么可以知道当前系统的/dev/shm的大小为3.9G,而我的MEMORY_TARGET为4G,因此增加/dev/shm的大小即可:
这样再重新启动Oracle就可以了。
为了确保操作系统重启之后能生效,需要修改/etc/fstab文件:
SYS@TEST16> startup ORA-00845: MEMORY_TARGET not supported on this system
这是因为你设置了MEMORY_TARGET这个参数,这个特性需要用到/dev/shm共享文件系统,而且要求/dev/shm必须大于MEMORY_TARGET,如果/dev/shm比MEMORY_TARGET小就会报错。
[root@lx16 ~]# df -h|grep /dev/shm Filesystem Size Used Avail Use% Mounted on tmpfs 3.9G 0 3.9G 0% /dev/shm
从什么可以知道当前系统的/dev/shm的大小为3.9G,而我的MEMORY_TARGET为4G,因此增加/dev/shm的大小即可:
[root@lx16 ~]# mount -t tmpfs shmfs -o size=8g /dev/shm [root@lx16 ~]# df -h |grep /dev/shm shmfs 8.0G 0 7.0G 0% /dev/shm
这样再重新启动Oracle就可以了。
为了确保操作系统重启之后能生效,需要修改/etc/fstab文件:
tmpfs /dev/shm tmpfs defaults size=8g 0 0
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