[oracle@XMDB6100 admin]$ ps -ef|grep ^oracle
oracle 9244 9243 0 09:28 pts/0 00:00:00 -bash
oracle 10084 10083 0 11:27 pts/2 00:00:00 -bash
oracle 10177 9244 0 11:54 pts/0 00:00:00 ps -ef
oracle 10178 9244 0 11:54 pts/0 00:00:00 grep ^oracle
[oracle@XMDB6100 admin]$ sqlplus / as sysdba
SQL*Plus: Release 10.2.0.5.0 - Production on Sat Sep 29 11:55:11 2012
Copyright (c) 1982, 2010, Oracle. All Rights Reserved.
Connected to an idle instance.
SQL> startup
ORACLE instance started.
Total System Global Area 1610612736 bytes
Fixed Size 2096632 bytes
Variable Size 385876488 bytes
Database Buffers 1207959552 bytes
Redo Buffers 14680064 bytes
ORA-00205: error in identifying control file, check alert log for more info
SQL> exit
[oracle@XMDB6100 admin]$ oerr ora 00205
00205, 00000, "error in identifying control file, check alert log for more info"
// *Cause: The system could not find a control file of the specified name and
// size.
// *Action: Check that ALL control files are online and that they are the same
// files that the system created at cold start time.
[oracle@XMDB6100 admin]$
更多信息看check alert log for more info
