connecting to Teradata

[QCR615]

After installing JDBC2_FDW and configuring for Teradata I am getting below error message while trying to run select * from tbltd; I am able to create user mapping and foreign table as well. Thanks, java.lang.ClassNotFoundException: com.teradata.jdbc.TeraDriver at java.net.URLClassLoader$1.run(URLClassLoader.java:366) at java.net.URLClassLoader$1.run(URLClassLoader.java:355) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:354) at java.lang.ClassLoader.loadClass(ClassLoader.java:425) at java.lang.ClassLoader.loadClass(ClassLoader.java:358) at JDBCUtils.createConnection(JDBCUtils.java:77)