How to lookup JNDI resources on WebLogic

Question

I deployed a legacy application on WebLogic 11g  The application has the following code    Context context   new InitialContext     dataSource    javax sql DataSource  context lookup  java myDataSource      I also have a data source configured  in WebLogic with the JNDI name of        jdbc myDataSource   When the above java code runs  I get the following exception          javax naming NameNotFoundException  While trying to look up  myDataSource in  app webapp axis2 war 60105275   remaining name   myDataSource          at weblogic jndi internal BasicNamingNode newNameNotFoundException BasicNamingNode java 1139         at weblogic jndi internal ApplicationNamingNode lookup ApplicationNamingNode java 144    I m fairly new to JNDI  so my question is  Where is the disconnect in naming  What does it mean when a context lookup has a prefix of  java       Thanks

User · Answer

I just had to update legacy Weblogic 8 app to use a data-source instead of hard-coded JDBC string. Datasource JNDI name on the configuration tab in the Weblogic admin showed: "weblogic.jdbc.ESdatasource", below are two ways that worked:

      Context ctx = new InitialContext();
      DataSource dataSource;

      try {
        dataSource = (DataSource) ctx.lookup("weblogic.jdbc.ESdatasource");
        response.getWriter().println("A " +dataSource);
      }catch(Exception e) {
        response.getWriter().println("A " + e.getMessage() + e.getCause());
      }

      //or

      try {
        dataSource = (DataSource) ctx.lookup("weblogic/jdbc/ESdatasource");
        response.getWriter().println("F "+dataSource);
      }catch(Exception e) {
        response.getWriter().println("F " + e.getMessage() + e.getCause());
      }

      //use your datasource
      conn = datasource.getConnection();

That's all folks. No passwords and initial context factory needed from the inside of Weblogic app.

User · Answer

I had a similar problem to this one  It got solved by deleting the java comp env  prefix and using jdbc myDataSource in the context lookup  Just as someone pointed out in the comments

User · Answer

You should be able to simply do this   Context context   new InitialContext    dataSource    javax sql DataSource  context lookup  jdbc myDataSource      If you are looking it up from a remote destination you need to use the WL initial context factory like this   Hashtable lt String  String gt  h   new Hashtable lt String  String gt  7   h put Context INITIAL CONTEXT FACTORY   weblogic jndi WLInitialContextFactory    h put Context PROVIDER URL  pURL     For example  t3   127 0 0 1 7001  h put Context SECURITY PRINCIPAL  pUsername   h put Context SECURITY CREDENTIALS  pPassword    InitialContext context   new InitialContext h   dataSource    javax sql DataSource  context lookup  jdbc myDataSource      weblogic jndi WLInitialContextFactory

User · Answer

java is the root JNDI namespace for resources  What the original snippet of code means is that the container the application was initially deployed in did not apply any additional namespaces to the JNDI context you retrieved  as an example  Tomcat automatically adds all resources to the namespace comp env  so you would have to do dataSource    javax sql DataSource  context lookup  java comp env jdbc myDataSource    if the resource reference name is jdbc myDataSource    To avoid having to change your legacy code I think if you register the datasource with the name myDataSource  remove the jdbc   you should be fine  Let me know if that works

[weblogic] How to lookup JNDI resources on WebLogic?

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