ORA-27101: shared memory realm does not exist
I tried to fix this error like I just added 3gb switch on boot.ini file and then I just shutdown the server and up again. the database working properly. where you can find this boot.ini file on windows server 2003.
Note : windows 2000 not applicable.
After added 3gb switch, I can increase SGA max size manually and other components of SGA size also.
What is 3gb switch and How to set up?