ERROR ORA-12203: TNS: unable to connect to destination

Hello All,
I have installed Oracle 8i and forms 6i on my computer running on Windows NT 4.0 with service pack 4.0. The order of my installation was Oracle 8i and then Forms 6i. I have also used Net8 Easy Config to configure the tnsnames.ora file. I tested the connection on the Net8 Easy Config wizzard and I got the connection successful message. However I still get the ERROR ORA-12203: TNS: unable to connect to destination message when I tried to connect from forms 6i.
I have below my tnsnames.ora file:
# C:\FORMS6I\NET80\ADMIN\TNSNAMES.ORA Configuration File:C:\forms6i\net80\admin\tnsnames.ora
# Generated by Oracle Net8 Assistant
LISTENER1 =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = austin)(PORT = 1521))
(CONNECT_DATA = (SID = SUN))
Rep60_AUSTIN-Forms6i,Rep60_AUSTIN-Forms6i.world=(ADDRESS=(PROTOCOL=tcp)(HOST=AUSTIN)(PORT=1949))
I have created database objects, but forms will not connect. What else should do?
Thanks for your anticipated response.

Hi
Your oracle database and forms are installed on different oracle home so when you configurate your sql net that time you are configurating only your oracle database. So for form you must be having different oracle home. you cand change thid from start/oracle inatallation products/home selecter. so change our home and run the form. and if still having problem than check for tnsnames.ora file you must be having two files and both must be having right configuration.
thanks

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I am trying to install Oracle 8i and oracle Forms and reports on my personal system for prectise purpose,
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then I installed Oracle 8i(sql, pl/sql) in D: drive on my system, both installed successfully
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ORA-12203 TNS : Unable to connect to destination.
Please suggest how can I solve that problem.
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Moved to   Forum Home » Database » Database - General as it itsn't an SQL and PL/SQL question.
>
ORA-12203:
     TNS:unable to connect to destination
Cause:      Invalid address specified or destination is not listening. This error can also occur because of underlying network or network transport problems.
Action:      Verify that the net service name you entered was correct. Verify that the ADDRESS portion of the connect descriptor which corresponds to the net service name is correct. Ensure that the destination process (for example the listener) is running at the remote node.

ORA-12203 :TNS :Unable to connect to the destination.

Hi, All
I installed Oracle 8i and oracle form 6i.
The installation was successful.
It is installed in separate drive.
I can't connect to the forms
the error is
ORA-12203 :TNS :Unable to connect to the destination
please help me..

1) Verify that you have entered the net service name you wish to reach correctly.
2) Verify that the net service name ADDRESS parameters in the connect
descriptor of your TNSNAMES.ORA file are correct.
3) Verify that your TNSNAMES.ORA file is stored in the correct directory.
4) Verify that the listener on the remote node has started and is running. If not,
start the listener by using the Listener Control Utility.
5) If you are connecting from a login box, verify that you are not placing an "@"
symbol before your connect net service name.
NOTE:21337.1

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Fatal NI connect error 12203, connecting to:
(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=BEQ)(PROGRAM=oracle80)(ARGV0=oracle80ORCL)(ARGS='(DESCRIPTION=(LOCAL=YES)(ADDRESS=(PROTOCOL=beq)))')))(CONNECT_DATA=(SID=ORCL)(CID=(PROGRAM=C:\Oracle\6IR2\bin\ifbld60.exe)(HOST=USPC755)(USER=dangj))))
VERSION INFORMATION:
TNS for 32-bit Windows: Version 8.0.6.0.0 - Production
Oracle Bequeath NT Protocol Adapter for 32-bit Windows: Version 8.0.6.0.0 - Production
Time: 10-OCT-07 10:04:15
Tracing not turned on.
Tns error struct:
nr err code: 12203
TNS-12203: TNS:unable to connect to destination
ns main err code: 12560
TNS-12560: TNS:protocol adapter error
ns secondary err code: 0
nt main err code: 530
TNS-00530: Protocol adapter error
nt secondary err code: 0
nt OS err code: 0

IIRC this version will, if it can't find your database, automatically try to connect to a database called ORCL.
This database doesn't exist in your case.
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Senior Oracle DBA

[12203] TNS-12203 TNS:unable to connect to destination

[12203] TNS-12203 TNS:unable to connect to destination
What does this mean?
Is it mostly a network issue?

1) Verify that you have entered the net service name you wish to reach correctly.
2) Verify that the net service name ADDRESS parameters in the connect
descriptor of your TNSNAMES.ORA file are correct.
3) Verify that your TNSNAMES.ORA file is stored in the correct directory.
4) Verify that the listener on the remote node has started and is running. If not,
start the listener by using the Listener Control Utility.
5) If you are connecting from a login box, verify that you are not placing an "@"
symbol before your connect net service name.
NOTE:21337.1

ERROR ORA-12203: TNS: unable to connect to destination

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