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From Auser99 <guser999...@gmail.com>
Subject Re: Universal connection pooling Type Casting problem
Date Tue, 20 Apr 2010 02:40:29 GMT

Does anyone have a solution for this. Thanks.

au

http:/www.xprad.org/



SivaKumarl wrote:
> 
> Hi Friends, 
>           I am using universal connection pooling for connecting database
> , while configuring manually i able to connect to database,but while
> configuring in server.xml i am unable to cast the datasource i am getting
> the class cast exception, please find the below configuration and error
> details , correct me if i configured wrong .I am using Tomcat 6.0
> 
> server.xml configurartion
> 
>  <Context docBase="UCP" path="/UCP" reloadable="true"
> source="org.eclipse.jst.jee.server:UCP"> 
>       <Resource auth="Container" description="DataSource Reference"
> driverClassName="oracle.jdbc.OracleDriver" 
>                         maxActive="4" maxIdle="2" maxWait="5000"
> name="jdbc/oracleds" factory="oracle.jdbc.pool.OracleDataSource" 
>                         username="branch" password="branch"
> type="oracle.ucp.jdbc.PoolDataSourceImpl" 
>                         url="jdbc:oracle:thin:@//192.168.203.12:1521/ycs"  
> validationQuery="select 1 from dual"/> 
>       </Context> 
> 
> Error Details
> javax.naming.NamingException: Could not create resource factory instance
> [Root exception is java.lang.ClassCastException:
> oracle.jdbc.pool.OracleDataSource cannot be cast to
> javax.naming.spi.ObjectFactory] 
>         at
> org.apache.naming.factory.ResourceFactory.getObjectInstance(ResourceFactory.java:102)

>         at
> javax.naming.spi.NamingManager.getObjectInstance(NamingManager.java:304) 
>         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 TestServlet.doGet(TestServlet.java:37) 
>         at javax.servlet.http.HttpServlet.service(HttpServlet.java:617) 
>         at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) 
>         at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)

>         at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

>         at
> org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) 
>         at
> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) 
>         at
> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128) 
>         at
> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) 
>         at
> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) 
>         at
> org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293) 
>         at
> org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:849) 
>         at
> org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)

>         at
> org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:454) 
>         at java.lang.Thread.run(Thread.java:619) 
> Caused by: java.lang.ClassCastException: oracle.jdbc.pool.OracleDataSource
> cannot be cast to javax.naming.spi.ObjectFactory 
>         at
> org.apache.naming.factory.ResourceFactory.getObjectInstance(ResourceFactory.java:98)

>         ... 20 more 
> 
> 
> Java code for retrieving connection
> 
> Context initContext; 
>                 try { 
>                         initContext = new InitialContext(); 
>                 
>                 Context envContext  =
> (Context)initContext.lookup("java:/comp/env"); 
>                 DataSource ds =
> (DataSource)envContext.lookup("jdbc/oracleds"); 
>                 } catch (NamingException e) { 
>                         // TODO Auto-generated catch block 
>                         e.printStackTrace(); 
>                 } 
> 
> 
> 
> Thanks in Advance 
> Siva kumar
> 
> 

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