Setup the DB2 Environment Variable

Navigate to Environment-WebSphere variables.
Select the DB2UNIVERSAL_JDBC_DRIVER_PATH link from the list of environment variables. This will open the configuration screen for this variable.
Set the Value field to point to the directory containing the Type 4/Type 2 drivers. This is normally the drivers directory under the SDEJ installation, e.g. D:\Curam\CuramSDEJ\drivers.
Click OK to confirm the changes.