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| | | Servlet Unavailable when Reloading Application | Servlet Unavailable when Reloading Application 2004-01-08 - By Oscar (TOMCAT)
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Hi, List,
I'm using TOMCAT 4.1.27 integrated with WebSphere Studio Application Developer
5.1 under Windows. When I change a class and recompile it, I wish to reload my
application to test the changes made. Using the TOMCAT Manager application, I
click in the reload link, and when I try to refresh the page I have:
HTTP Status 503 - Servlet SCPController is currently unavailable
-- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- --
type Status report
message Servlet SCPController is currently unavailable
description The requested service (Servlet SCPController is currently
unavailable) is not currently available.
-- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- --
Apache Tomcat/4.1.27
Looking at the LOGS, I found:
2004-01-08 11:46:29 HTMLManager: restart: Reloading web application at '/SCP'
2004-01-08 11:46:29 StandardContext[/SCP]: Reloading this Context has started
2004-01-08 11:46:29 WebappLoader[/SCP]: Reloading checks are enabled for this
Context
2004-01-08 11:46:29 StandardWrapper[/SCP:default]: Loading container servlet
default
2004-01-08 11:46:29 StandardWrapper[/SCP:invoker]: Loading container servlet
invoker
2004-01-08 11:46:29 StandardManager[/SCP]: Seeding random number generator
class java.security.SecureRandom 
2004-01-08 11:46:29 StandardManager[/SCP]: Seeding of random number generator
has been completed
2004-01-08 11:46:29 StandardContext[/SCP]: Reloading this Context is completed
2004-01-08 11:46:29 HTMLManager: list: Listing contexts for virtual host
'localhost'
2004-01-08 11:46:33 StandardWrapper[/SCP:SCPController]: Marking servlet
SCPController as unavailable
2004-01-08 11:46:33 StandardWrapperValve[SCPController]: Allocate exception for
servlet SCPController
javax.servlet.ServletException : Wrapper cannot find servlet class com.eccox.scp
.web.SCPController or a class it depends on
at org.apache.catalina.core.StandardWrapper (StandardWrapper.java
:891)
at org.apache.catalina.core.StandardWrapper (StandardWrapper.java:668)
at org.apache.catalina.core.StandardWrapperValve (StandardWrapperValve
.java:210)
at org.apache.catalina.core.StandardPipeline $StandardPipelineValveContext
.invokeNext(StandardPipeline.java:643)
at org.apache.catalina.core.StandardPipeline (StandardPipeline.java:480)
at org.apache.catalina.core.ContainerBase (ContainerBase.java:995)
at org.apache.catalina.core.StandardContextValve (StandardContextValve
.java:191)
at org.apache.catalina.core.StandardPipeline $StandardPipelineValveContext
.invokeNext(StandardPipeline.java:643)
at org.apache.catalina.core.StandardPipeline (StandardPipeline.java:480)
at org.apache.catalina.core.ContainerBase (ContainerBase.java:995)
at org.apache.catalina.core.StandardContext (StandardContext.java:2416)
at org.apache.catalina.core.StandardHostValve (StandardHostValve.java
:180)
at org.apache.catalina.core.StandardPipeline $StandardPipelineValveContext
.invokeNext(StandardPipeline.java:643)
at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve
.java:171)
at org.apache.catalina.core.StandardPipeline $StandardPipelineValveContext
.invokeNext(StandardPipeline.java:641)
at org.apache.catalina.valves.ErrorReportValve (ErrorReportValve.java
:172)
at org.apache.catalina.core.StandardPipeline $StandardPipelineValveContext
.invokeNext(StandardPipeline.java:641)
at org.apache.catalina.core.StandardPipeline (StandardPipeline.java:480)
at org.apache.catalina.core.ContainerBase (ContainerBase.java:995)
at org.apache.catalina.core.StandardEngineValve (StandardEngineValve
.java:174)
at org.apache.catalina.core.StandardPipeline $StandardPipelineValveContext
.invokeNext(StandardPipeline.java:643)
at org.apache.catalina.core.StandardPipeline (StandardPipeline.java:480)
at org.apache.catalina.core.ContainerBase (ContainerBase.java:995)
at org.apache.coyote.tomcat4.CoyoteAdapter (CoyoteAdapter.java:223)
at org.apache.coyote.http11.Http11Processor (Http11Processor.java:601)
at org.apache.coyote.http11.Http11Protocol $Http11ConnectionHandler
.processConnection(Http11Protocol.java:392)
at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:565)
at org.apache.tomcat.util.threads.ThreadPool $ControlRunnable.run(ThreadPool
.java:619)
at java.lang.Thread (Thread.java:534)
-- -- Root Cause -- --
java.lang.ClassNotFoundException : com.eccox.scp.web.SCPController
at org.apache.catalina.loader.WebappClassLoader (WebappClassLoader
.java:1444)
at org.apache.catalina.loader.WebappClassLoader (WebappClassLoader
.java:1289)
at org.apache.catalina.core.StandardWrapper (StandardWrapper.java
:885)
at org.apache.catalina.core.StandardWrapper (StandardWrapper.java:668)
at org.apache.catalina.core.StandardWrapperValve (StandardWrapperValve
.java:210)
at org.apache.catalina.core.StandardPipeline $StandardPipelineValveContext
.invokeNext(StandardPipeline.java:643)
at org.apache.catalina.core.StandardPipeline (StandardPipeline.java:480)
at org.apache.catalina.core.ContainerBase (ContainerBase.java:995)
at org.apache.catalina.core.StandardContextValve (StandardContextValve
.java:191)
at org.apache.catalina.core.StandardPipeline $StandardPipelineValveContext
.invokeNext(StandardPipeline.java:643)
at org.apache.catalina.core.StandardPipeline (StandardPipeline.java:480)
at org.apache.catalina.core.ContainerBase (ContainerBase.java:995)
at org.apache.catalina.core.StandardContext (StandardContext.java:2416)
at org.apache.catalina.core.StandardHostValve (StandardHostValve.java
:180)
at org.apache.catalina.core.StandardPipeline $StandardPipelineValveContext
.invokeNext(StandardPipeline.java:643)
at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve
.java:171)
at org.apache.catalina.core.StandardPipeline $StandardPipelineValveContext
.invokeNext(StandardPipeline.java:641)
at org.apache.catalina.valves.ErrorReportValve (ErrorReportValve.java
:172)
at org.apache.catalina.core.StandardPipeline $StandardPipelineValveContext
.invokeNext(StandardPipeline.java:641)
at org.apache.catalina.core.StandardPipeline (StandardPipeline.java:480)
at org.apache.catalina.core.ContainerBase (ContainerBase.java:995)
at org.apache.catalina.core.StandardEngineValve (StandardEngineValve
.java:174)
at org.apache.catalina.core.StandardPipeline $StandardPipelineValveContext
.invokeNext(StandardPipeline.java:643)
at org.apache.catalina.core.StandardPipeline (StandardPipeline.java:480)
at org.apache.catalina.core.ContainerBase (ContainerBase.java:995)
at org.apache.coyote.tomcat4.CoyoteAdapter (CoyoteAdapter.java:223)
at org.apache.coyote.http11.Http11Processor (Http11Processor.java:601)
at org.apache.coyote.http11.Http11Protocol $Http11ConnectionHandler
.processConnection(Http11Protocol.java:392)
at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:565)
at org.apache.tomcat.util.threads.ThreadPool $ControlRunnable.run(ThreadPool
.java:619)
at java.lang.Thread (Thread.java:534)
2004-01-08 11:47:55 StandardWrapperValve[SCPController]: Servlet SCPController
is currently unavailable
To solve the problem, I need to RESTART TOMCAT, and this is an expensive time
consuming task...
Using the same TOMCAT and WSAD under RedHat Linux, the same procedure works
well...
Any hints ???????????????????????????
Thanks a lot...
===========================
Jos� Oscar de Souza Eduardo
Coordenador de Projetos
tel: 3047-4541
fax: 3047-4550
oscar.eduardo@(protected)
===========================
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META http-equiv=Content-Type content="text/html; charset=iso-8859 (See http://iso-8859.ora-code.com)-1">
<META content="MSHTML 6.00.2800.1106" name=GENERATOR>
<STYLE></STYLE>
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<BODY bgColor=#ffffff>
<DIV><FONT face=Arial size=2>Hi, List,</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I'm using TOMCAT 4.1.27 integrated with WebSphere
Studio Application Developer 5.1 under Windows. When I change a class and
recompile it, I wish to reload my application to test the changes made. Using
the TOMCAT Manager application, I click in the reload link, and when I try to
refresh the page I have:</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>
<H1>HTTP Status 503 - Servlet SCPController is currently unavailable</H1>
<HR noShade SIZE=1>
<P><B><FONT style="BACKGROUND-COLOR: #0086b2" color=#ffffff>type</FONT></B>
Status report</P>
<P><B><FONT style="BACKGROUND-COLOR: #0086b2" color=#ffffff>message</FONT></B>
<U>Servlet SCPController is currently unavailable</U></P>
<P><B><FONT style="BACKGROUND-COLOR: #0086b2"
color=#ffffff>description</FONT></B> <U>The requested service (Servlet
SCPController is currently unavailable) is not currently available.</U></P>
<HR noShade SIZE=1>
<H3>Apache Tomcat/4.1.27</H3></FONT></DIV>
<DIV><FONT face=Arial size=2>Looking at the LOGS, I found:</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>2004-01-08 11:46:29 HTMLManager: restart:
Reloading
web application at '/SCP'<BR>2004-01-08 11:46:29 StandardContext[/SCP]:
Reloading this Context has started<BR>2004-01-08 11:46:29 WebappLoader[/SCP]:
Reloading checks are enabled for this Context<BR>2004-01-08 11:46:29
StandardWrapper[/SCP:default]: Loading container servlet default<BR>2004-01-08
11:46:29 StandardWrapper[/SCP:invoker]: Loading container servlet
invoker<BR>2004-01-08 11:46:29 StandardManager[/SCP]: Seeding random number
generator class java.security.SecureRandom <BR>2004-01-08 11:46:29
StandardManager[/SCP]: Seeding of random number generator has been
completed<BR>2004-01-08 11:46:29 StandardContext[/SCP]: Reloading this Context
is completed<BR>2004-01-08 11:46:29 HTMLManager: list: Listing contexts for
virtual host 'localhost'<BR>2004-01-08 11:46:33
StandardWrapper[/SCP:SCPController]: Marking servlet SCPController as
unavailable<BR>2004-01-08 11:46:33 StandardWrapperValve[SCPController]:
Allocate
exception for servlet SCPController<BR>javax.servlet.ServletException : Wrapper
cannot find servlet class com.eccox.scp.web.SCPController or a class it depends
on<BR> at
org.apache.catalina.core.StandardWrapper (StandardWrapper.java:891)
<BR> at
org.apache.catalina.core.StandardWrapper (StandardWrapper.java:668)<BR>
at
org.apache.catalina.core.StandardWrapperValve (StandardWrapperValve.java
:210)<BR> at
org.apache.catalina.core.StandardPipeline $StandardPipelineValveContext
.invokeNext(StandardPipeline.java:643)<BR> at
org.apache.catalina.core.StandardPipeline (StandardPipeline.java:480)<BR>
at
org.apache.catalina.core.ContainerBase (ContainerBase.java:995)<BR> 
;at
org.apache.catalina.core.StandardContextValve (StandardContextValve.java
:191)<BR> at
org.apache.catalina.core.StandardPipeline $StandardPipelineValveContext
.invokeNext(StandardPipeline.java:643)<BR> at
org.apache.catalina.core.StandardPipeline (StandardPipeline.java:480)<BR>
at
org.apache.catalina.core.ContainerBase (ContainerBase.java:995)<BR> 
;at
org.apache.catalina.core.StandardContext (StandardContext.java:2416)<BR>
at
org.apache.catalina.core.StandardHostValve (StandardHostValve.java:180)
<BR> at
org.apache.catalina.core.StandardPipeline $StandardPipelineValveContext
.invokeNext(StandardPipeline.java:643)<BR> at
org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve
.java:171)<BR> at
org.apache.catalina.core.StandardPipeline $StandardPipelineValveContext
.invokeNext(StandardPipeline.java:641)<BR> at
org.apache.catalina.valves.ErrorReportValve (ErrorReportValve.java:172)
<BR> at
org.apache.catalina.core.StandardPipeline $StandardPipelineValveContext
.invokeNext(StandardPipeline.java:641)<BR> at
org.apache.catalina.core.StandardPipeline (StandardPipeline.java:480)<BR>
at
org.apache.catalina.core.ContainerBase (ContainerBase.java:995)<BR> 
;at
org.apache.catalina.core.StandardEngineValve (StandardEngineValve.java
:174)<BR> at
org.apache.catalina.core.StandardPipeline $StandardPipelineValveContext
.invokeNext(StandardPipeline.java:643)<BR> at
org.apache.catalina.core.StandardPipeline (StandardPipeline.java:480)<BR>
at
org.apache.catalina.core.ContainerBase (ContainerBase.java:995)<BR> 
;at
org.apache.coyote.tomcat4.CoyoteAdapter (CoyoteAdapter.java:223)<BR>
at
org.apache.coyote.http11.Http11Processor (Http11Processor.java:601)<BR>
at
org.apache.coyote.http11.Http11Protocol $Http11ConnectionHandler
.processConnection(Http11Protocol.java:392)<BR> at
org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:565)<BR>
at
org.apache.tomcat.util.threads.ThreadPool $ControlRunnable.run(ThreadPool.java
:619)<BR> at
java.lang.Thread (Thread.java:534)<BR>-- -- Root Cause
-- --<BR>java.lang.ClassNotFoundException :
com.eccox.scp.web.SCPController<BR> at
org.apache.catalina.loader.WebappClassLoader (WebappClassLoader.java
:1444)<BR> at
org.apache.catalina.loader.WebappClassLoader (WebappClassLoader.java
:1289)<BR> at
org.apache.catalina.core.StandardWrapper (StandardWrapper.java:885)
<BR> at
org.apache.catalina.core.StandardWrapper (StandardWrapper.java:668)<BR>
at
org.apache.catalina.core.StandardWrapperValve (StandardWrapperValve.java
:210)<BR> at
org.apache.catalina.core.StandardPipeline $StandardPipelineValveContext
.invokeNext(StandardPipeline.java:643)<BR> at
org.apache.catalina.core.StandardPipeline (StandardPipeline.java:480)<BR>
at
org.apache.catalina.core.ContainerBase (ContainerBase.java:995)<BR> 
;at
org.apache.catalina.core.StandardContextValve (StandardContextValve.java
:191)<BR> at
org.apache.catalina.core.StandardPipeline $StandardPipelineValveContext
.invokeNext(StandardPipeline.java:643)<BR> at
org.apache.catalina.core.StandardPipeline (StandardPipeline.java:480)<BR>
at
org.apache.catalina.core.ContainerBase (ContainerBase.java:995)<BR> 
;at
org.apache.catalina.core.StandardContext (StandardContext.java:2416)<BR>
at
org.apache.catalina.core.StandardHostValve (StandardHostValve.java:180)
<BR> at
org.apache.catalina.core.StandardPipeline $StandardPipelineValveContext
.invokeNext(StandardPipeline.java:643)<BR> at
org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve
.java:171)<BR> at
org.apache.catalina.core.StandardPipeline $StandardPipelineValveContext
.invokeNext(StandardPipeline.java:641)<BR> at
org.apache.catalina.valves.ErrorReportValve (ErrorReportValve.java:172)
<BR> at
org.apache.catalina.core.StandardPipeline $StandardPipelineValveContext
.invokeNext(StandardPipeline.java:641)<BR> at
org.apache.catalina.core.StandardPipeline (StandardPipeline.java:480)<BR>
at
org.apache.catalina.core.ContainerBase (ContainerBase.java:995)<BR> 
;at
org.apache.catalina.core.StandardEngineValve (StandardEngineValve.java
:174)<BR> at
org.apache.catalina.core.StandardPipeline $StandardPipelineValveContext
.invokeNext(StandardPipeline.java:643)<BR> at
org.apache.catalina.core.StandardPipeline (StandardPipeline.java:480)<BR>
at
org.apache.catalina.core.ContainerBase (ContainerBase.java:995)<BR> 
;at
org.apache.coyote.tomcat4.CoyoteAdapter (CoyoteAdapter.java:223)<BR>
at
org.apache.coyote.http11.Http11Processor (Http11Processor.java:601)<BR>
at
org.apache.coyote.http11.Http11Protocol $Http11ConnectionHandler
.processConnection(Http11Protocol.java:392)<BR> at
org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:565)<BR>
at
org.apache.tomcat.util.threads.ThreadPool $ControlRunnable.run(ThreadPool.java
:619)<BR> at
java.lang.Thread (Thread.java:534)</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>2004-01-08 11:47:55
StandardWrapperValve[SCPController]: Servlet SCPController is currently
unavailable<BR></FONT></DIV>
<DIV><FONT face=Arial size=2>To solve the problem, I need to RESTART TOMCAT,
and
this is an expensive time consuming task...</FONT></DIV>
<DIV><FONT face=Arial size=2>Using the same TOMCAT and WSAD under RedHat Linux,
the same procedure works well...</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Any hints ???????????????????????????</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Thanks a lot...</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV>
<TABLE>
<TBODY>
<TR>
<TD><IMG src="cid:003f01c3d5ef$5d7a9300$f300a8c0@(protected)"> </TD>
<TD
style="FONT-SIZE: 10pt; COLOR: gray; FONT-FAMILY: Verdana">==============
=============<BR><STRONG><SPAN
style="COLOR: black">Jos� <U><I>Oscar</I></U> de Souza
Eduardo<BR></SPAN>Coordenador de Projetos<BR></STRONG>tel:
3047-4541<BR>fax: 3047-4550<BR><A
href="mailto:oscar.eduardo@(protected)">oscar.eduardo@(protected)<BR><
/A>===========================
</TD></TR></TBODY></TABLE></DIV></BODY></HTML>
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