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Getting DataSource object through JNDI in WebSphere 6.1

 
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Hello friends,

I have to write a standalone java application which should get the DataSource object from WebSphere 6.1. DataSource object is of type oracle and is successfully configured in WebSphere's JNDI and I was able to TestConnection successfully. The standalone application is outside websphere context and is configured as a batch process which runs at scheduled time. This application should get the datasource object from JNDI and perform database operations.The main reason for doing this is I want to get rid of storing database credentials in properties file. I created a simple java project and added the following classpath libraries

rsahelpers.jar
rsadbutils.jar
ojdbc14.jar
com.ibm.ws.emf_2.1.0.jar
com.ibm.ws.runtime_6.1.0.jar
com.ibm.ws.admin.client_6.1.0.jar


The program in java file is as follows,


Problem: I want to use dataSource.getConnection() instead of dataSource.getConnection("username", "password"); because the later one involves hardcoding of username and password in java file. However when I invoke getConnection() it throws the following exception.



The datasource object configured in websphere has already been supplied username and password otherwise the testconnection would have failed. My question is why cant I use dataSource.getConnection() method instead of dataSource.getConnection("username", "password")?
If I supply the username and password to getConnection method then everything works fine. I can see the print statements on console.

Does anyone know the solution to this problem ?
Waiting for your reply.

Thank you,
Rohit.
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