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Class.forname(DriverClass) error in tomcat 4.1.18

 
Greenhorn
Posts: 6
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I thought I had fixed all my problems until this one arose.
Basically I make a call to the method:
Class.forname() which allows dynamic loading of java classes at runtime.
But catalina is reporting errors....
Does anybody know a fix for this?
java.lang.ClassNotFoundException: com.inet.tds.TdsDriver
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoa
der.java:1428)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoa
der.java:1274)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:315)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:140)
at com.bt.intranettv.dbconnection.ConnectionPool.makeNewConnection(Conne
ctionPool.java:147)
at com.bt.intranettv.dbconnection.ConnectionPool.<init>(ConnectionPool.j
ava:52)
at com.bt.intranettv.view.RequestGlobalParams.<init>(RequestGlobalParams
.java:75)
at com.bt.intranettv.view.IntranetTV.init(IntranetTV.java:339)
at javax.servlet.GenericServlet.init(GenericServlet.java:256)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.
java:934)
at org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.jav
a:666)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperV
alve.java:214)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContex
t.invokeNext(StandardPipeline.java:643)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.jav
a:480)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextV
alve.java:191)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContex
t.invokeNext(StandardPipeline.java:643)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.jav
a:480)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:
2415)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.j
ava:180)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContex
t.invokeNext(StandardPipeline.java:643)
at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatche
rValve.java:170)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContex
t.invokeNext(StandardPipeline.java:641)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.j
ava:172)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContex
t.invokeNext(StandardPipeline.java:641)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.jav
a:480)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineVal
ve.java:174)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContex
t.invokeNext(StandardPipeline.java:643)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.jav
a:480)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:22
3)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java
:432)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.proce
ssConnection(Http11Protocol.java:386)
at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java
:534)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadP
ool.java:530)
at java.lang.Thread.run(Thread.java:536)
Error making pool: java.sql.SQLException: Can't find class for driver: com.inet.
tds.TdsDriverin dbconnection.connectionpool.java
 
tradester amagio
Greenhorn
Posts: 6
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OK, this problem is caused because I forgot to place the .jar file into tomcats common/lib directory.
Tomcat 4.1.18 seems to have its own classpath and therefore you end up using replicated files
 
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