Ayuda con error desconocido!!!

[corocho]

trato de conectarme a una bd mediante una jsp pero me sale este error:
type Exception report

message

description The server encountered an internal error () that prevented it from fulfilling this request.

exception

org.apache.jasper.JasperException
org.apache.jasper.servlet.JspServletWrapper.servic e(JspServletWrapper.java:384)
org.apache.jasper.servlet.JspServlet.serviceJspFil e(JspServlet.java:297)
org.apache.jasper.servlet.JspServlet.service(JspSe rvlet.java:247)
javax.servlet.http.HttpServlet.service(HttpServlet .java:860)
sun.reflect.GeneratedMethodAccessor71.invoke(Unkno wn Source)
sun.reflect.DelegatingMethodAccessorImpl.invoke(De legatingMethodAccessorImpl.java:25)
java.lang.reflect.Method.invoke(Method.java:324)
org.apache.catalina.security.SecurityUtil$1.run(Se curityUtil.java:249)
java.security.AccessController.doPrivileged(Native Method)
javax.security.auth.Subject.doAsPrivileged(Subject .java:500)
org.apache.catalina.security.SecurityUtil.execute( SecurityUtil.java:282)
org.apache.catalina.security.SecurityUtil.doAsPriv ilege(SecurityUtil.java:165)


root cause

java.lang.NullPointerException
org.apache.jsp.control_jsp._jspService(control_jsp .java:96)
org.apache.jasper.runtime.HttpJspBase.service(Http JspBase.java:105)
javax.servlet.http.HttpServlet.service(HttpServlet .java:860)
org.apache.jasper.servlet.JspServletWrapper.servic e(JspServletWrapper.java:336)
org.apache.jasper.servlet.JspServlet.serviceJspFil e(JspServlet.java:297)
org.apache.jasper.servlet.JspServlet.service(JspSe rvlet.java:247)
javax.servlet.http.HttpServlet.service(HttpServlet .java:860)
sun.reflect.GeneratedMethodAccessor71.invoke(Unkno wn Source)
sun.reflect.DelegatingMethodAccessorImpl.invoke(De legatingMethodAccessorImpl.java:25)
java.lang.reflect.Method.invoke(Method.java:324)
org.apache.catalina.security.SecurityUtil$1.run(Se curityUtil.java:249)
java.security.AccessController.doPrivileged(Native Method)
javax.security.auth.Subject.doAsPrivileged(Subject .java:500)
org.apache.catalina.security.SecurityUtil.execute( SecurityUtil.java:282)
org.apache.catalina.security.SecurityUtil.doAsPriv ilege(SecurityUtil.java:165)


note The full stack trace of the root cause is available in the Sun-Java-System/Application-Server logs.

por favor ayuda!!!