I need help with this problem. I installed database on windows server 2003 32bit. It server has 8 GB of RAM. I configured
pfile to use AWE or VLM using document (ID 225349.1), so that I can increase SGA. Now I have error to start database.
ORA-27100: shared memory realm already exists
a simple solution would be to use usual Windoze three finger salute & reboot the system
bcm@bcm-laptop:~$ oerr ora 27100 27100, 00000, "shared memory realm already exists" // *Cause: Tried to start duplicate instances, or tried to restart an // instance that had not been properly shutdown // *Action: Use a different instance name, or cleanup the failed instance's // SGA