JDBC TO JDBC adapter

Hi ,

i am using JDBC to JDBC adapter.in my scenario sender comunication channel is in error.

Error during database connection to the database URL 'jdbc:odbc:Driver={Microsoft Access Driver (.mdb)} ;DBQ=C:\xifile\Student_Database.mdb' using the JDBC driver 'sun.jdbc.odbc.JdbcOdbcDriver': 'com.sap.aii.adapter.jdbc.sql.DriverManagerException: Cannot establish connection to URL 'jdbc:odbc:Driver={Microsoft Access Driver (.mdb)} ;DBQ=C:\xifile\Student_Database.mdb': java.lang.NullPointerException'

please help.