Oracle 11g ODAC 11.1.0.6.21 on Windows 2008 Standard server gives TNS error

Question

Hi,
I have Oracle 11g ODAC 11.1.0.6.21 installed on my Application server that has 32 bit Windows 2008 Standard. The Oracle database 10g is installed on another 2008 server. On database server I can connect using SQLPlus. But on application server I cannot connect using ODAC SQLPlus. I have given correct service name in tnsnames.ora file.
Error is ORA-12154 TNS: Listener cannot resolve service name
What's wrong? Is 11.1.0.6.21 not meant for Windows 2008? I did not get any errors while installing.
This 11.1.0.6.21 works perfectly for me on XP machine.
I have browsed this forum but not getting clear steps to peform.
Can someone guide me what is needed?
Thanks
Shrini

Answer 1

Hi,
The request to connect from the client is reaching the server but it seems the parsing of the service name is either wrong or the information is correct. Here are a couple of suggestions.
If you have a good known set of sqlnet.ora and tnsnames.ora files on another client where the same connection descriptor works, then backup the curreny client network config files and copy the good known files to the Windows 2008 web server where you see the error. Make sure you recycle the worker processes once the files have been copied.
Try to connect via Ezconnect and by pass the config files to see if you get the same error.
//hostname:port/servicenameofdb
where hostname is the machine where the target database is running
port is the port on the DB machine where the tns listener is running and listening
service name is the service name of the target DB
Use this syntax in the connect string box when attempting to connect from SQL PLUS out of the ODAC home.
You can also run lsnrctl utility on the server and vertify there is a handler for the service name or instance that is the target,
HTH
Jenny B.