H r u?
Just I'll write how you can connect ORACLE database with ORACLE Developer?
When u use SQL Plus and don't have any problem, and u wanna install developer(Forms & Reports), u cannot connect to the same Database.
You must have the same NLS_LANGUAGE in two home (DB, Dev).
Go to Registry Editor: Start -> Run -> regedit ->
Search about "NLS_LANG" and change its value to "AMERICAN_AMERICA.AR8MSWIN1256" to you can write and retrieve Arabic, and search another time else "not found".
Search about file "tnsnames.ora", we will found more than one file.
You'll find it in
In this file will find statement like this:
1-Connect string SID: use it to connect to database scott/tiger@ORA10 , you can write anything.
3-somehost : IP Address or computer name where have database.
6-Service_Name: name of database.
Add a copy of previous text and change some data and save it and try to connect to the database.
In another version you will see another schema but the same concept, please try it and return me what the result.