Guys
I got this error when I start oracle instance.
"ORA-00845: MEMORY_TARGET not supported on this system"
Some of the forum said about of tmpfs size which is mounted on /dev/shm.
Then I saw this post.
So I suspected it isn't enough space of share memory.
I checked with "df" command.
That space is currently amount mounted on /dev/shm. So I think that 5.9G isn't enough.
It's need to set a mount which over 5.9G manually.
Then I changed at /etc/fstab as below. (changed "default" to "size=6g" )
Then, have restarted the host and checked the size with "df" again.
Then , try to start the instance again.
#sqlplus / as sysdba
SQL>startup
This time nothing error occur. :)
UTEE
Ref: http://www.oracle-base.com/articles/11g/automatic-memory-management-11gr1.php
