java.lang.classcastexception com.ibm.ws.rsadapter.jdbc.wsjdbcconnection incompatible with oracle.jdbc.oracleConnection

Question

Facing java.lang.classcastexception com.ibm.ws.rsadapter.jdbc.wsjdbcconnection incompatible with oracle.jdbc.oracleConnection in websphere 8.5. The application running properly in weblogic

I am getting this Exception when running my code on Websphere8.5 using JNDI.However this same code is running fine on Weblogic 8.1,Tomcat 5.5,JBoss 4.2.x. The Code also runs fine via JNDI using Data sources (WebSphere Application Server V4)

And the code also works fine when I am Running the application via non JNDI.But the below mentioned Exception is coming when I am using the DataSource configuration in Websphere via JNDI.

Below is the StackTrace of the Exception coming

com.ibm.ws.rsadapter.jdbc.WSJdbcConnection incompatible with oracle.jdbc.OracleConnection
*java.lang.ClassCastException: com.ibm.ws.rsadapter.jdbc.WSJdbcConnection incompatible with oracle.jdbc.OracleConnection*
        at oracle.sql.ArrayDescriptor.createDescriptor(ArrayDescriptor.java:149)
        at oracle.sql.ArrayDescriptor.createDescriptor(ArrayDescriptor.java:115)
        at com.syfact.mo.administrator.pctr.LoadAction.loadPostalcodes(LoadAction.java:182)
        at com.syfact.mo.administrator.pctr.LoadAction.doAction(LoadAction.java:490)
        at com.syfact.web.servlet.Syfact.processStandardCommand(Syfact.java:370)
        at com.syfact.web.servlet.Syfact.doPost(Syfact.java:291)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:763)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
        at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:966)
        at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:907)
        at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:145)
        at com.syfact.ConnectionFilter.doFilter(ConnectionFilter.java:40)
        at com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:190)
        at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:130)
        at com.ibm.ws.webcontainer.filter.WebAppFilterChain._doFilter(WebAppFilterChain.java:87)
        at com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebAppFilterManager.java:696)
        at com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebAppFilterManager.java:641)
        at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:475)
        at com.ibm.ws.wswebcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:463)
        at com.ibm.ws.webcontainer.webapp.WebApp.handleRequest(WebApp.java:3107)
        at com.ibm.ws.webcontainer.webapp.WebGroup.handleRequest(WebGroup.java:238)
        at com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:811)
        at com.ibm.ws.wswebcontainer.WebContainer.handleRequest(WebContainer.java:1425)
        at com.ibm.ws.webcontainer.channel.WCChannelLink.ready(WCChannelLink.java:92)
        at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleDiscrimination(HttpInboundLink.java:465)
        at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleNewInformation(HttpInboundLink.java:394)
        at com.ibm.ws.http.channel.inbound.impl.HttpICLReadCallback.complete(HttpICLReadCallback.java:102)
        at com.ibm.ws.tcp.channel.impl.AioReadCompletionListener.futureCompleted(AioReadCompletionListener.java:152)
        at com.ibm.io.async.AbstractAsyncFuture.invokeCallback(AbstractAsyncFuture.java:213)
        at com.ibm.io.async.AbstractAsyncFuture.fireCompletionActions(AbstractAsyncFuture.java:195)
        at com.ibm.io.async.AsyncFuture.completed(AsyncFuture.java:136)
        at com.ibm.io.async.ResultHandler.complete(ResultHandler.java:193)
        at com.ibm.io.async.ResultHandler.runEventProcessingLoop(ResultHandler.java:725)
        at com.ibm.io.async.ResultHandler$2.run(ResultHandler.java:847)
        at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1498)

i have been searching for solutions on this problem for nearly a week and found one:

Example:

connection = (Connection) WSJdbcUtil.getNativeConnection((WSJdbcConnection)dataSource.getConnection()); 
OracleCallableStatement ocstmt = (OracleCallableStatement) connection.prepareCall(sql); "*

I do not want to have WAS libraries in my project because my code is not to be deployed only on websphere but it should be deployable on Tomcat,JBoss,Weblogic .etc......

Answer 1

为了访问 JDBC 驱动程序供应商特定的接口，您需要使用为此目的而存在的 JDBC 规范定义的解包 API，

OracleConnection oraCon = connection.unwrap(oracle.jdbc.OracleConnection.class);