Not Showing Data in report while using Global Temporary Table .

Hi ,

I am using Oracle Database and  Global Temporary Table in my report ,  After placing some fields in report , Checking Data in Preview Window,

No data is Retrieving  , I am using Following Command in my report

Select * from GTT_TB .   Is there any session Problem with  .NET and Oracle DB ,

Note : Normal Tables and View working Fine , While using  Global Temporary Table no data is Retrieving