ORA-27101: Shared memory realm does not exist

10 pts.
Tags:
ORA-27101
Oracle error messages
Shared memory realm does not exist
ora-27101:shared memory realm does not exist

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More information is needed here.

what is your database version ?
is this error being thrown along with ora-01034 ?
When does this error occur ?
during installation, when trying to startup the database ?
after installation, when invoking SQL*Plus ?
when clients attempt a remote connection to the database ?

operating system would also be useful.

Things to check:
- If the error started after modifying some database parameters, restore original parameters, and try again.
- Check environment variables to see if ORACLE_HOME and ORACLE_SID are defined and are correct.
- Check that the oracle_home is defined correctly in listener.ora (without an extra “/” at the end of the path)

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There are several possible solutions that are discussed <a href=”http://forums.oracle.com/forums/thread.jspa?threadID=239281&tstart=0″>here</a>.
Good Luck!
-Flame
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