Errors when Modifying a Weblogic EJB example to make it connect to mySQL

Question

Hello,
I am learning the example codes shipped with weblogic server, which is under ...samples\examples\ejb20\basic\beanManaged. The original connection pool was on cloudscape. I was trying to modify it and make it connect to mySQL.
In ejb-jar.xml and weblogic-ejb-jar.xml, I replaced "demopool" (which was the original pool name) with "demopool1".
After starting the server, I configured a new connection pool as following:
Name: demopool1
URL: jdbc:mysql:///test
Driver Classname: org.gjt.mm.mysql.Driver
Properties
(key=value): user=none
server=none
But when I run the example, I got the following error:
----------------Server Side:------------------------------------
<2007-10-6 &#19979;&#21320;03&#26102;23&#20998;18&#31186;> <Error> <JDBC> <Error during Data Source creation:
weblogic.common.ResourceException: DataSource(examples-dataSource-demoPool1) can't be created with non-existent Pool (connection or multi) (demoPool1)>
setEntityContext called
ejbFindByPrimaryKey (ID: 0)
Failed to lookup JDBC Datasource. Please double check that
the JNDI name defined in the resource-description of the
EJB's weblogic-ejb-jar.xml file is the same as the JNDI name
for the Datasource defined in your config.xml.
---------------------Client Side:-----------------------
C:\bea\wlserver6.1\samples\examples\ejb20\basic\beanManaged>java examples.ejb20.
basic.beanManaged.Client "t3://localhost:7001"
Beginning beanManaged.Client...
Trying to find account with id: ID: 0
There was an exception while creating and using the Accounts.
This indicates that there was a problem communicating with the server: java.rmi.RemoteException: Exception in ejbFindByPrimaryKey; nested exception is:
javax.ejb.EJBException
- with nested exception:
[javax.naming.LinkException:  [Root exception is javax.naming.NameNotFoundException: Unable to resolve examples-dataSource-demoPool1. Resolved: '' Unresolved:'examples-dataSource-demoPool1' ; remaining name '']; Link Remaining Name: 'examples-dataSource-demoPool1']
What should I do to solve this problem?
Thanks a lot.

Answer 1

The exception leads me to believe that you never set up the connection pool with that name in WebLogic. Why not try it? Do you know how to set up a connection pool? Start up the admin console and add it in.
http://localhost:7001/console
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