Starting DB Manualy

Question

hi..
i am trying to start the DB Manually because its not working but when i am trying to log on as sysdba i face the following error :*********************************************************************************************
C:\>sqlplus
SQL*Plus: Release 10.1.0.2.0 - Production on Sat Feb 24 12:30:52 2007
Copyright (c) 1982, 2004, Oracle. All rights reserved.
Enter user-name: sys@itdev as sysdba
Enter password:
ERROR:
ORA-12514: TNS:listener does not currently know of service requested in connect
descriptor
so i understand from the previous error that i should change the oracle_sid
when i did that the problem still available.
i will give you some ifo about the tnsname and listener
C:\>tnsping itdev
Used TNSNAMES adapter to resolve the alias
Attempting to contact (DESCRIPTION = (ADDRESS_LIST = (ADDRESS = (PROTOCOL = TCP)
(HOST = amgccdc1)(PORT = 1521))) (CONNECT_DATA = (SERVICE_NAME = itdev)))
OK (10 msec)
C:\>lsnrctl services
LSNRCTL for 32-bit Windows: Version 10.1.0.2.0 - Production on 24-FEB-2007 12:35
:04
Copyright (c) 1991, 2004, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=amgccdc1.almuhairy.co.ae
)(PORT=1521)))
Services Summary...
Service "PLSExtProc" has 1 instance(s).
Instance "PLSExtProc", status UNKNOWN, has 1 handler(s) for this service...
Handler(s):
"DEDICATED" established:0 refused:0
LOCAL SERVER
The command completed successfully
i need your help please.
thank you

Answer 1

thank you for your reply
i want to inform you that the user sys already connected but as [b]ideal instance and i applied the following command:
C:\>sqlplus
SQL*Plus: Release 10.1.0.2.0 - Production on Sat Feb 24 13:36:36 2007
Copyright (c) 1982, 2004, Oracle. All rights reserved.
Enter user-name: sys as sysdba
Enter password:
ERROR:
ORA-12560: TNS:protocol adapter error
Enter user-name:
ERROR:
ORA-12560: TNS:protocol adapter error
Enter user-name:
ERROR:
ORA-12560: TNS:protocol adapter error
SP2-0157: unable to CONNECT to ORACLE after 3 attempts, exiting SQL*Plus
C:\>set oracle_sid
Environment variable oracle_sid not defined
C:\>set oracle_home
Environment variable oracle_home not defined
C:\>set oracle_sid=itdev
C:\>set oracle_sid
oracle_sid=itdev
C:\>sqlplus
SQL*Plus: Release 10.1.0.2.0 - Production on Sat Feb 24 13:37:44 2007
Copyright (c) 1982, 2004, Oracle. All rights reserved.
Enter user-name: sys as sysdba
Enter password:
Connected to an idle instance.
SQL> shutdown abort
ORACLE instance shut down.
SQL> startup nomount
ORA-01261: Parameter db_recovery_file_dest destination string cannot be transla
ed
ORA-01263: Name given for file destination directory is invalid
OSD-04018: Unable to access the specified directory or device.
O/S-Error: (OS 2) The system cannot find the file specified.
SQL>
i need your help again
thank you