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Database Server 11G ORA-01034: Oracle not available ORA-27101:share memory

Yasir IqbalDec 29 2011 — edited Jan 4 2012

Dear All,
I am a new DBA. I have installed the Oracle 11G database on Redhat 5.0. The database is running fine. But today suddenly the database stop working. When I logon on sqlplus start the database. It gives me the following error.

ORA-03113:end-of-file on communication channel
Process ID: 3045
Session ID: 125 Serial number" 5

More when i try to connect to the database through application server. It gives me the following error. Help is required.

ORA-01034: Oracle not available ORA-27101:share memory realm does not exit Linux Error:2 No such file of Directory.

Please help me

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Locked on Feb 1 2012

Added on Dec 29 2011

#11g, #general-database-discussions

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