I get the 'TNS-12541: TNS:no listener' error when issuing 'tnsping localhost 1521' command. Is there something wrong with tnsnames.ora file that you mentioned? How do I fix it?
Also, there were multiple files with the same name; is the one I want to modify in 'C:\Oracle\product\11.1.0\db_1\owb\network\admin'?
If you're getting the TNS No listener then your problem is with the database. Make sure the database is up and running, and that a listener is configued, once you fix the tns no listener and you actually get a time meausure in miliseconds to indicate that your database is reachable, then proceed to test the content manager connection with cognos configuration.
Regards,
Kleber
