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From Filip Hanik <devli...@hanik.com>
Subject Re: Exception Message:org.apache.tomcat.dbcp.dbcp.BasicDataSource cannot be cast to org.apache.tomcat.dbcp.dbcp.BasicDataSource
Date Tue, 10 Jul 2012 03:26:37 GMT
That's what's wrong. Remove them all from web-inf/lib

Sent from my iPad, pardon any brevity. 
Filip Hanik


On Jul 9, 2012, at 10:58, vijay.gandra@subk.co.in wrote:

> yes in both CATALINA_HOME/lib and app/WEB-INF/lib,
> tomcat-dbcp.jar,ojdbc14.jar and lasses12.jar files are available.
> 
> 
> 
> ----- Original Message -----
>>> Thanks for your reply,
>>> 
>>> 1. $CATALINA_HOME/lib
>>> 
>>> 2. conf/context.xml?
>>> 
>>> 3. In y application/lib also tomcat-dbcp.jar,ojdbc14.jar files are
>>> available. Please suggest how to debug any useful site.
>> 
>> I'm not sure I fully understand this statement.  Are you saying that you
>> have the "tomcat-dbcp.jar" and "ojdbc14.jar" files in both
>> $CATALINA_HOME/lib and app/WEB-INF/lib?
>> 
>> If so, you're asking for trouble.  Just leave them in $CATALINA_HOME/lib
>> and remove them from your application.
>> 
>> Dan
>> 
>> 
>> 
>> 
>>> 
>>> Thanks,
>>> 
>>> 
>>>> ----- Original Message -----
>>>>> Hi All,
>>>>> 
>>>>> I am getting class cast exception when casting DataSource to
>>>>> BasicDataSource.
>>>>> The same is executed when run on JDeveloper.
>>>>> 
>>>>> Environment : Tomcat 7.X
>>>>> DB : Oracle
>>>>> 
>>>>> Used : tomcat-dbcp.jar,ojdbc14.jar
>>>> 
>>>> Where do you have these deployed?  WEB-INF/lib? $CATALINA_BASE/lib?
>>>> $CATALINA_HOME/lib?
>>>> 
>>>> 
>>>>> context.xml
>>>> 
>>>> What is the location of this context file?  conf/context.xml?
>>>> META-INF/context.xml?
>>>> 
>>>> 
>>>>> 
>>>>> <Resource name="jdbc/ShipConsoleDS" auth="Container"
>>>>>  type="javax.sql.DataSource"
>>>>>  driverClassName="oracle.jdbc.OracleDriver"
>>>>>  url="jdbc:oracle:thin:@sharp.appsahyd.com:1521:DEV01"
>>>>>  username="apps" password="apps" maxActive="-1" maxIdle="0"
>>>>>  maxWait="-1" initialSize="15"
>>>>>  accessToUnderlyingConnectionAllowed="true" />
>>>>> 
>>>>> Java Code to access Data Source :
>>>>> 
>>>>> InitialContext initContext = new InitialContext();
>>>>> Context envContext = (Context)
>>>>> initContext.lookup("java:/comp/env");
>>>>> DataSource dataSource = (DataSource)
>>>>> envContext.lookup("jdbc/ShipConsoleDS");
>>>>> BasicDataSource bds = (BasicDataSource)dataSource;
>>>>> 
>>>>> 
>>>>> Exception :
>>>>> 
>>>>> Exception Message:org.apache.tomcat.dbcp.dbcp.BasicDataSource
>>>>> cannot
>>>>> be cast to org.apache.tomcat.dbcp.dbcp.BasicDataSource
>>>> 
>>>> I've seen similar exceptions before when the BasicDataSource class
>>>> loaded
>>>> by two different class loaders.  For example, from the common class
>>>> loader
>>>> and from the webapp class loader.  Check your class path to see if
>>>> this
>>>> might be occurring.
>>>> 
>>>> Also, you might want to add the "-verbose:class" option to your JVM
>>>> options.  This will print the classes that are loaded and the
>>>> location
>>>> from where they are loaded.  This is helpful if the class is
>>>> unknowingly
>>>> loaded twice.
>>>> 
>>>> Dan
>>>> 
>>>> 
>>>> 
>>>>> java.lang.ClassCastException:
>>>>> org.apache.tomcat.dbcp.dbcp.BasicDataSource
>>>>> cannot
>>>>> be cast to org.apache.tomcat.dbcp.dbcp.BasicDataSource
>>>>>        at
>>>>> com.aasc.model.AascOracleDAOFactory.createConnection(AascOracleDAOFac
>>>>> tory.java:96)
>>>>>        at
>>>>>        com.aasc.model.AascDBAccess.getConnection(AascDBAccess.java:58)
>>>>>        at
>>>>>        com.aasc.model.AascDBAccess.getValues(AascDBAccess.java:84)
>>>>>        at
>>>>> org.apache.jsp.aascShipConsoleIndex_jsp._jspService(aascShipConsoleIn
>>>>> dex_jsp.java:296)
>>>>>        at
>>>>>        org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
>>>>>        at
>>>>>        javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
>>>>>        at
>>>>> org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper
>>>>> .java:432)
>>>>>        at
>>>>> org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:3
>>>>> 90)
>>>>>        at
>>>>>        org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
>>>>>        at
>>>>>        javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
>>>>>        at
>>>>> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Appl
>>>>> icationFilterChain.java:305)
>>>>>        at
>>>>> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationF
>>>>> ilterChain.java:210)
>>>>>        at
>>>>> org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperV
>>>>> alve.java:225)
>>>>>        at
>>>>> org.apache.catalina.core.StandardContextValve.invoke(StandardContextV
>>>>> alve.java:169)
>>>>>        at
>>>>> org.apache.catalina.authenticator.AuthenticatorBase.invoke(Authentica
>>>>> torBase.java:472)
>>>>>        at
>>>>> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.j
>>>>> ava:168)
>>>>>        at
>>>>> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.j
>>>>> ava:98)
>>>>>        at
>>>>> org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:
>>>>> 927)
>>>>>        at
>>>>> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineVal
>>>>> ve.java:118)
>>>>>        at
>>>>> org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.jav
>>>>> a:407)
>>>>>        at
>>>>> org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp
>>>>> 11Processor.java:999)
>>>>>        at
>>>>> org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(
>>>>> AbstractProtocol.java:565)
>>>>>        at
>>>>> org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoin
>>>>> t.java:309)
>>>>>        at
>>>>>        java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown
>>>>> Source
>>>>> )
>>>>>        at
>>>>>        java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown
>>>>>        Source)
>>>>>        at java.lang.Thread.run(Unknown Source)
>>>>> 
>>>>> 
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