Oracle 11g persisting arabic characters

Oracle 11g persisting arabic characters



I am trying to persist Arabic characters into Oracle 11g Database. When I
persist Arabic strings they persist successfully but, in the database they
appear as question marks ???????.

I searched and found that problem might be with database encoding, but I
think that might not be true as I am able to write Arabic strings from
SQLDeveloper and commit DB, it displays correctly within DB table. Also
when I retrieve that field and display it on screen, it displays
correctly.

So from this I concluded that DB recognizes Arabic and there is no problem
there. I tried setting Client/Server region language settings still did
not fix the problem. After reading this post and trying its suggestions, I
found that problem might be with persistence layer, that it does not
handle Arabic characters properly. What is the solution to this?

I am not sure if this is a redundant question but I am desperate. Any
help/advice is appreciated.
Systems I am using:
Server: Oracle Thin 11g
IDE: IBM WebSphere Integration Developer with JSF 1.2
Note: Still a beginner.