I want to authenticate that user can access a particular schema by a particular application which is running on JBOSS application server. how can i identify that which application is accessing schema?
Plz suggest as soon as possible........

Please see the following link. Check out module.

SYS_CONTEXT

1 SELECT PROGRAM FROM V$SESSION
2* WHERE AUDSID = SYS_CONTEXT('USERENV', 'SESSIONID')
3 /

PROGRAM
-------------------------------------------------------
sqlplus.exe

1 row selected.