i m using rational application developer and DB2 V9 . i m finding problem to make the DB2 connection with rational application. when i try rational record list to make connection with DB2 it give an error " IWAS0126E problem encounter while trying to establish connection" . I have provided the class location as "D:\Program Files\IBM\SQLLIB\java\db2java.zip" and the class file is "db2java.zip". I tried to make connection with the cloudscape it is working . I m using Was6.0 . can u please tell me where i m making mistake . How to solve this problem ?