Error in starting the database

Question

when i shut down my database,there is no error but as i startup my database it is giving the following errors
ORA-24324: service handle not initialized
ORA-01041: internal error. hostdef extension doesn't exist
ORA-12514: TNS:listener could not resolve SERVICE_NAME given in connect descriptor
plzzzz help me out.....i have checked the TNSNAMES.ORA file and there is no problem in it...plzz help me
thanx in advance

Answer 1

C:\>sqlplus/nolog
SQL*Plus: Release 9.2.0.1.0 - Production on Wed May 23 12:54:35 2007
Copyright (c) 1982, 2002, Oracle Corporation. All rights reserved.
SQL> $lsnrctl status ;
LSNRCTL for 32-bit Windows: Version 9.2.0.1.0 - Production on 23-MAY-2007 12:54:
54
Copyright (c) 1991, 2002, Oracle Corporation. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=maha-gis-kkj)(PORT=1521)
STATUS of the LISTENER
Alias LISTENER
Version TNSLSNR for 32-bit Windows: Version 9.2.0.1.0 - Produc
tion
Start Date 23-MAY-2007 10:27:03
Uptime 0 days 2 hr. 27 min. 50 sec
Trace Level off
Security OFF
SNMP OFF
Listener Parameter File F:\oracle\ora92\network\admin\listener.ora
Listener Log File F:\oracle\ora92\network\log\listener.log
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=maha-gis-kkj.in.niit.com)(PORT=1521)
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC0ipc)))
Services Summary...
Service "PLSExtProc" has 1 instance(s).
Instance "PLSExtProc", status UNKNOWN, has 1 handler(s) for this service...
The command completed successfully