I have serious problem,please help me.....

Question

Hi all;
i have a big problem.... i can't connect to my database orcl2. whenever i write
c:>sqlplus "/as sysdba"
it does not do anything. The following row is
c:>
if i write c:>sqlplus /nolog
it goes to another cmd screen
sql>..................
but i get errror while sql>conn sys@orcl2 as sysdba
tns could not resolve service name... i'm in trouble.. whenever i attempt to do;
i looked in TNSNAMES.ora file, and host name with sid names are true.It is no doubt that there is no problem there.... please i have to connect to my database as soon as possible.Thanks for your help now on..Best regards......

Answer 1

You can use tnsping to "ping" the listener, or something else that occupies the port (with various results), but it will not tell you if a service/sid is available or not on that listener.
C:\>tnsping (description=(address=(protocol=tcp)(host=localhost)(port=1521))
(connect_data=(sid=nothing_here))) 3
TNS Ping Utility for 32-bit Windows: Version 10.2.0.1.0 - Production on 13-NOV-2006 21:56:31
Copyright (c) 1997, 2005, Oracle.  All rights reserved.
Attempting to contact (description=(address=(protocol=tcp)(host=localhost)(port=1521))
(connect_data=(sid=nothing_here)))
OK (30 msek)
OK (0 msek)
OK (10 msek)Message was edited by:
orafad