C:\Users\computer>set ORACLE_SID=TEST C:\Users\computer>sqlplus / as sysdba SQL*Plus: Release 11.1.0.7.0 - Production on Thu May 10 23:05:45 2013 Copyright (c) 1982, 2008, Oracle. All rights reserved. Connected to: Oracle Database 11g Enterprise Edition Release 11.1.0.7.0 - Production With the Partitioning, OLAP, Data Mining and Real Application Testing options SQL> select name from v$database; NAME --------- TEST TAKEN BACKUP OF THE CONTROL FILE; SQL> ALTER DATABASE BACKUP CONTROLFILE TO TRACE AS 'D:\TEST1\CONTROL.BKP'; Database altered. SQL> shut immediate Database closed. Database dismounted. ORACLE instance shut down. NOTE: EDITED PFILE AND REMOVED THE EXISTS CONTROLFILE PARAMETER FROM IT & TRY STARTED THE DATABASE IN MOUNT. SQL> startup mount; ORACLE instance started. Total System Global Area 535662592 bytes Fixed Size 1348508 bytes Variable Size ...