We are planning to move to Windows 7 Machine. We have oracle Client 11g as well as Client 10g client installed on the Windos 7 machine.
We were able to connect using Sql Developer -3.1.07.42 perfectly.Only SQL Plus window gets closed when we click on OK after entering the userid,Password and Host String.Same thing works fine with SQL Developer 3.1.
Any suggesstion why it failed from SQL Plus?
Check whether the java version is installed properly... Try 32-bit version of java instead of 64 bit..