kivanc
1. FIRST, AVOID USAGE OF LONG. it is desupported.
2. you cannot have two longs in same table. 
   try lobs.
3. if u still insist, there is a clumsy workaround.
   create two tables. of same structure ( with single
   long column.
   store first long column L1 in table T1
   store second long column L2 in table T2.
   have a primary - foreign realtionships between 
  the two.