Can't run a JSP page due to error 500

[Al Kaiser]

This is the error I get. Wonder if it's a dB error:
500 Internal Server Error
javax.servlet.jsp.JspException: Unable to get connection, DataSource invalid: "No suitable driver"
at org.apache.taglibs.standard.tag.common.sql.UpdateTagSupport.getConnection(UpdateTagSupport.java:270)
at org.apache.taglibs.standard.tag.common.sql.UpdateTagSupport.doStartTag(UpdateTagSupport.java:151)
at org.apache.taglibs.standard.tag.el.sql.UpdateTag.doStartTag(UpdateTag.java:97)
at _chapter13._dbSetup._jspService(dbSetup.jsp:9)
[/chapter13/dbSetup.jsp]
at oracle.jsp.runtime.HttpJsp.service(HttpJsp.java:139)
at oracle.jsp.runtimev2.JspPageTable.service(JspPageTable.java:347)
at oracle.jsp.runtimev2.JspServlet.internalService(JspServlet.java:509)
at oracle.jsp.runtimev2.JspServlet.service(JspServlet.java:413)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.0.0)].server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:778)
at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.0.0)].server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:317)
at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.0.0)].server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:790)
at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.0.0)].server.http.HttpRequestHandler.run(HttpRequestHandler.java:270)
at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.0.0)].server.http.HttpRequestHandler.run(HttpRequestHandler.java:112)
at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.0.0)].util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:192)
at java.lang.Thread.run(Thread.java:536)

[Bear Bibeault]

Yes, it indicates that you do not have a database driver loaded for the DB. Might help if you filled us in on the details.

[Chris Hall]

Seems like the database driver jar file(s) is not on your classpath.

[Nicholas Cheung]

In case you got the driver in the classpath, you may also check whether you have downloaded the correct driver.
I have an experience before. I connect to the DB via Servlet. I downloaded DB2 driver db2java.zip, however, it turns out Not Suitable Driver.
I then unzip the file to check whether the driver exists. I found that this is a type 2 driver, which does not contain type 3/4 drivers, while my connection is type 4.
Thus, in case everything seems correct, you may also check this case.
Nick.