ORA-27101: shared memory realm does not exist problems

ORA-27101: shared memory realm does not exist problems occur when logging onto SQLPlus: ORA-01034: ORACLE not avaiableORA-27101: shared memory realm does not exist Process ID: 0 Session ID: 0 Serial Number: 0 solution: 1. cmd-sqlplus/nolog; 2. Log On with the SYS User: conn/as sysdba; 3. Start to open the Directory: D: \ app \ Administrator \ admin \ Users 11 \ pfile, you will find a file: init. ora.1052011103553, which is the Startup File backed up when Oracle was last started successfully. Create spfile from pfile = 'f: \ app \ yousr \ admin \ orcl \ pfile \ init. ora.6102012112028 '; 4. Open the database startup 5, cmd-sqlplus/nolog; conn/as sysdba; create spfile from pfile = 'f: \ app \ yousr \ admin \ orcl \ pfile \ init. ora.6102012112028 '; startup