[Oracle]ORA-00845: MEMORY_TARGET not supported on this system解决

os： redhat6  oracle11.2 

描述：

ORA-00845: MEMORY_TARGET not supported on this system

[oracle@oracle dbs]$ sqlplus "/as sysdba"

SQL> startup

ORA-00845: MEMORY_TARGET not supported on this system

解决：

[oracle@oracle dbs]$ df  -h  /dev/shm

Filesystem            Size  Used Avail Use% Mounted on

tmpfs                 2.4G  1.2G  1.3G  48% /dev/shm

[oracle@oracle dbs]$ su root 

Password: 

[root@oracle dbs]# mount -o remount,size=4G /dev/shm

[root@oracle dbs]# exit

exit

[oracle@oracle dbs]$ df -h |grep shm

tmpfs                 4.0G  1.2G  2.9G  29% /dev/shm

[oracle@oracle dbs]$ sqlplus "/as sysdba"

SQL> startup

ORACLE instance started.

总结：一个参数配置的不正确，实际值超过了实际的阀值