Problem connecting the database

Question

Hi ,
Iam developing a webapplication with websphere application server and db2 database.
In the webspehre application server i have created a datasource and the JNDI name is
jdbc/myds and tested the connection, it is fine. now i want to use this datasounce in my javaprogram. i use this statement
InitialContext ctx = new InitialContext();
dataSource = (DataSource) ctx.lookup("jdbc/myds");
but i get the error message name: jdbc/myds: First component in name jdbc/myds not found. Root exception is org.omg.CosNaming.NamingContextPackage.NotFound: IDL:omg.org/CosNaming/NamingContext/NotFound:1.0
can any one please tell me how to do the connection ???
please help

Answer 1

duffymo wrote:
DigitalDreamer wrote:
Weblogic admin console did not spit out web application deployment descriptors last time I checked (v8). Are you saying that when you make a change in the admin console it doesn't show up in the config.xml? News to me.No, by deployment descriptor I mean a file like ejb-jar.xml or web.xml
My point is that adding java:comp/env/ to the jndi name is probably not going to help since it requires more configuration:
add a <resource-ref> element to web.xml to define the resource.If it's part of the web tier, yes. What if it's in a service layer or EJB?ejb-jar.xml + weblogic-ejb-jar.xml or whatever
add an element to the vendor specific deployment descriptor (weblogic.xml or whatever) to map the resource to the actual jndi name.Nope.
"java:comp/env/whatever" is not the "full context name" it is a special context available to Java EE components that must be configured, Not sure what this means. I add the JNDI name to my connection pool, put the JNDI name in my Spring config, and voila - I have a data connection. Either you are creating your your datasource JNDI name with a java:comp/env/ prefix (which would be a bit strange) or you have an entry in web.xml + weblogic.xml. This is how java:comp/env is (was) supposed to be used.
Sure in your spring app it is a completely pointless abstraction but back in the day you were supposed to put all your configuration in web.xml etc ;-). The whole concept of java:comp/env is pretty much deprecated anyway: in Java EE 5 you have resource injection.