Hi Richard, Your problem might be related to the driver class not available in your classpath. You can find the exact cause by looking at the _0002fconnect_00033_0002ejspconnect3_jsp_20.java:82) at line no. 82. Look at tomcat_home/work/../localhost/yourwebapp/jsp/_0002fconnect_00033_0002ejspcon nect3_jsp_20.java
Can you check if your dependent jar (firebirdsql-full.jar) is placed under WEB-INF/lib folder. Placing dependent jar files here must solve your problems. hope it could help. regards SM -----Original Message----- From: Richard Drent (Drent IT BV) [mailto:[EMAIL PROTECTED] Sent: Monday, October 13, 2003 10:52 AM To: 'Tomcat Users List' Subject: how to solve "java.lang.NoClassDefFoundError" Can anyone tell me what this meens, and how to solve. This error accurse when I try to connect to a firebird db, using firebirdsql-full.jar Root cause: java.lang.NoClassDefFoundError at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:120) at _0002fconnect_00033_0002ejspconnect3_jsp_20._jspService(_0002fconnect_00033_ 0002ejspconnect3_jsp_20.java:82) at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:119) at javax.servlet.http.HttpServlet.service(HttpServlet.java:853) at org.apache.jasper.servlet.JspServlet$JspCountedServlet.service(JspServlet.ja va:130) at javax.servlet.http.HttpServlet.service(HttpServlet.java:853) at org.apache.jasper.servlet.JspServlet$JspServletWrapper.service(JspServlet.ja va:282) at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:429) at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:500) at javax.servlet.http.HttpServlet.service(HttpServlet.java:853) at org.apache.tomcat.core.ServletWrapper.doService(ServletWrapper.java:405) at org.apache.tomcat.core.Handler.service(Handler.java:287) at org.apache.tomcat.core.ServletWrapper.service(ServletWrapper.java:372) at org.apache.tomcat.core.ContextManager.internalService(ContextManager.java:81 2) at org.apache.tomcat.core.ContextManager.service(ContextManager.java:758) at org.apache.tomcat.service.connector.Ajp12ConnectionHandler.processConnection (Ajp12ConnectionHandler.java:166) at org.apache.tomcat.service.TcpWorkerThread.runIt(PoolTcpEndpoint.java:416) at org.apache.tomcat.util.ThreadPool$ControlRunnable.run(ThreadPool.java:501) at java.lang.Thread.run(Thread.java:484) Greetz Richard Drent --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]