Error While creating the Database alias


As part of “Creating a Web Service using a JDBC Database”, I’m trying to create the Database Alias
(follwing the tutorial webMethodsWebServicesDBQS46.pdf), I have supplied the following parameters required by the alias

DB URL : jdbc:oracle:thin:@tek260-2:1521:SESLIVE
DB Username : database user name
DB Password : database password
DB Driver : oracle.jdbc.driver.OracleDriver
Minimum Connections: 1
Maximum Connections: 4
Expiration Time (ms): 5
Loaded Drivers :

Its created the Datasource “EAI_MURALI” successfully, using the same alias when I try to get the tables(one of the connecton parameters) from the database an error window popup with the following error message

A Runtime Error has occurred. Do you wish to debug?
Error:‘tbodyNode’ is undefined

is there any problem with alias paramaters?
Please help me regarding this.

Thanks in advance,