Encoding when run a query

[LeandroArruda]

I have a query with some especial characters.
When i run the query, the especial characters is replaced with "?".

Where i can change to stop this?

Thank You

 

[Marco Kalter]

You will need to ensure that the character sets of the Oracle Client and Oracle Server are compatible with these special characters.

If in doubt, can you go to Help > Support Info and paste the text from the "Info" tab page into a reply?