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From "Ziggy O" <din...@gmail.com>
Subject Re: javax.naming.NamingException: Cannot create resource instance
Date Thu, 02 Oct 2008 08:04:49 GMT
No mate that was the full stack trace.

Thanks


On Wed, Oct 1, 2008 at 7:02 PM, David Smith <dns4@cornell.edu> wrote:

> Seems like such a generic error would have a root cause.  Was there
> anything more to the stack trace?
>
> --David
>
>
> Ziggy O wrote:
>
>> Hi,
>>
>> I am trying to connect to an oracle database but cant seem to get the jdbc
>> connection to work. I am developing the application on a Windows desktop
>> and
>> transferring it onto a Unix box.
>>
>> When i test it on the Windows environmnet it does manage to connect but if
>> i
>> test it on unix then i get an error. My gut feeling is that the
>> installation
>> on the unix environment is missing a library but i cant figure out what it
>> is.
>>
>> Here is how i am trying to get the jndi connection.
>>
>> [code]
>> String fullname;
>>        if (jndiPrefix != null && jndiPrefix.length() > 0)
>>            fullname = jndiPrefix + datasource;
>>        else
>>            fullname = datasource;
>>
>>        // JNDI
>>        Context ctx = null;
>>        DataSource ds = null;
>>        Connection conn = null;
>>
>>        try
>>        {
>>            ctx = new InitialContext();
>>            Context envContext  = (Context)ctx.lookup("java:/comp/env");
>>            if (ctx != null)
>>            {
>>                ds = (DataSource)envContext.lookup(fullname);
>>                if (ds != null)
>>                {
>>                    conn = ds.getConnection();
>>                }
>>            }
>>        }
>> [/code]
>>
>> And here is the Configuration.
>>
>> Context.xml (User and password modified)
>>
>> [code]
>>  <Resource name="jdbc/theDb" auth="Container"
>>                      type="javax.sql.DataSource"
>> driverClassName="oracle.jdbc.driver.OracleDriver"
>>                      url="jdbc:oracle:thin:@localhost:1521:webdev"
>>                      username="webuser" password="webuser" maxActive="20"
>> maxIdle="10"
>>                      maxWait="-1"/>
>> [/code]
>>
>> web.xml
>>
>> [code]
>>    <resource-ref>
>>     <description>Oracle Datasource</description>
>>     <res-ref-name>jdbc/theDb</res-ref-name>
>>     <res-type>oracle.jdbc.pool.OracleDataSource</res-type>
>>     <res-auth>Container</res-auth>
>>    </resource-ref>
>>
>> [/code]
>>
>> And here is the stack trace of the error
>>
>> [code]
>> javax.naming.NamingException: Cannot create resource instance
>>        at
>>
>> org.apache.naming.factory.ResourceFactory.getObjectInstance(ResourceFactory.java:143)
>>        at javax.naming.spi.NamingManager.getObjectInstance(Unknown Source)
>>        at org.apache.naming.NamingContext.lookup(NamingContext.java:793)
>>        at org.apache.naming.NamingContext.lookup(NamingContext.java:140)
>>        at org.apache.naming.NamingContext.lookup(NamingContext.java:781)
>>        at org.apache.naming.NamingContext.lookup(NamingContext.java:153)
>>        at
>> com.bt.ccs21.util.DbConnection.getJNDIConnection(DbConnection.java:334)
>>        at
>> com.bt.ccs21.util.DbConnection.getJNDIConnection(DbConnection.java:256)
>>        at
>> com.bt.ccs21.util.DbConnection.getJRunConnection(DbConnection.java:286)
>>        at
>>
>> com.bt.ccs21.presentation.events.admin.LogonActionPost.preAction(LogonActionPost.java:118)
>>        at
>>
>> com.bt.ccs21.presentation.events.CCS21EventAction.execute(CCS21EventAction.java:29)
>>        at
>>
>> org.apache.struts.chain.commands.servlet.ExecuteAction.execute(ExecuteAction.java:58)
>>        at
>>
>> org.apache.struts.chain.commands.AbstractExecuteAction.execute(AbstractExecuteAction.java:67)
>>        at
>>
>> org.apache.struts.chain.commands.ActionCommandBase.execute(ActionCommandBase.java:51)
>>        at
>> org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:190)
>>        at
>>
>> org.apache.commons.chain.generic.LookupCommand.execute(LookupCommand.java:304)
>>        at
>> org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:190)
>>        at
>>
>> org.apache.struts.chain.ComposableRequestProcessor.process(ComposableRequestProcessor.java:283)
>>        at
>> org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913)
>>        at
>> org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:462)
>>        at javax.servlet.http.HttpServlet.service(HttpServlet.java:710)
>>        at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
>>        at
>>
>> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
>>        at
>>
>> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
>>        at
>>
>> org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:210)
>>        at
>>
>> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:174)
>>        at
>>
>> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
>>        at
>>
>> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
>>        at
>>
>> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108)
>>        at
>>
>> org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:151)
>>        at
>> org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:870)
>>        at
>>
>> org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665)
>>        at
>>
>> org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528)
>>        at
>>
>> org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81)
>>        at
>>
>> org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:685)
>>        at java.lang.Thread.run(Unknown Source)
>> "/tmp/crmsauth.log.20081001" 561 lines, 48080 characters
>>        at
>>
>> org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665)
>>        at
>>
>> org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528)
>>        at
>>
>> org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81)
>>        at
>>
>> org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:685)
>>        at java.lang.Thread.run(Unknown Source)
>> [/code]
>>
>> What i dont understand is why it works on the installation on the windows
>> environment but not in the Unix environment. I check all the libraries and
>> everything under common/lib is the same for both environments.
>>
>> Thanks
>>
>> Edited by: ziggy on Oct 1, 2008 3:48 PM
>>
>> Edited by: ziggy on Oct 1, 2008 3:50 PM
>>
>>
>>
>
>
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