looks like an issue with the database. If this is an oracle instance I recommend the following steps In the command prompt set oracle_sid="your db Name" sqlplus / as sysdba or sqlplus system@"your db name" it will prmpt for the password Given the instance password that you have given at the time of creating the oracle db execute the following commands select name from v$database; to check the db select status from v$instance; -- > Checks if your oracle instance is open
If the oracle instance is open check your env variables and try launching the 2T client... If you are able to connect from the command prompt....then ensure that your env variables are correctly set...that should be the problem that you should work on with.. Check the tc environment variables to see if this is connecting to the correct db.