Cannot access Oracle instances

Question

Hi,
I'm hoping I can get some help. I am currently trying to access an Oracle instance, however whenever I try to access the instance via Oracle appliactions (enterprise manager, SQLPLUS) or a third party application, the application just hangs. I get no error message returned whatsoever. I have also tried connecting to a 'non-existant' schema and I get back the message 'TNS could not resolve service name' which i would expect. Any help would be much appreciated.

Answer 1

Hi
sqlnet.ora and tnsnames.ora look ok.
Used tnsping on the service and it has returned:
Used TNSNAMES adapter to resolve the alias
Attempting to contact (DESCRIPTION = (ADDRESS_LIST = (ADDRESS = (PROTOCOL = TCP)
(HOST = cvge561a)(PORT = 1521))) (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_N
AME = GEOSTORE)))
and from there it just hangs
I have tried the NET configuration wizard and go through the steps of editing the current listener. I have selected NO to configure another listener and then the application just hangs again.
This is all that is returned from trying to run sqlplus in the command prompt
SQL*Plus: Release 9.2.0.6.0 - Production on Thu Jan 10 14:16:52 2008
Copyright (c) 1982, 2002, Oracle Corporation. All rights reserved.
From here, it does not connect to the DB, neither does it give an error message. However, if you put in the incorrect values, it will return:
SQL*Plus: Release 9.2.0.6.0 - Production on Thu Jan 10 14:19:20 2008
Copyright (c) 1982, 2002, Oracle Corporation. All rights reserved.
ERROR:
ORA-12154: TNS:could not resolve service name
as expected.