After increasing the SGA during production environement,and then accidently the database from cleint end sys/sys as sysdba at sqlprompt
SQL>Shutdown
After that
SQL>Startup
ORA-27100: shared memory realm already exists
Then i connected from server as sys/sys as sysdba
SQL*Plus: Release 10.1.0.2.0 - Production on Thu Jan 11 20:38:01 2007
Copyright (c) 1982, 2004, Oracle. All rights reserved.
Connected to an idle instance.
SQL> startup force
ORA-27100: shared memory realm already exists
SQL> startup mount
ORA-27100: shared memory realm already exists
SQL> startup nomount
ORA-27100: shared memory realm already exists
SQL> startup pfile=c:\init.ora.729200584925
ORA-27100: shared memory realm already exists
SQL> startup open
ORA-27100: shared memory realm already exists
SQL>
What should be done immediate steps cause tommorow is working day.
Khurram