[Building Sakai] Site Info errors - 2.7.0

[Stephen Marquard]

If you are running into the OS open files limit, then the
NoClassDefFoundError could be because of the jvm's inability to open the
.jar file containing the class.

We start our appservers with

ulimit -n 5000

in the shell script that starts the jvm.
 
Regards
Stephen
 
>>> Robert Long <relong at svsu.edu> 8/4/2010 5:56 PM >>> 
All,

I am receiving some strange errors upon loading Site Info for the first
time
after a Tomcat reboot. I am using Sakai 2.7.0, Tomcat 5.5.30, and Java
1.6.0_20.

If I go into a site and click ³Site Info² the following chain of
errors
appears:

---Begin Errors---
2010-08-04 11:45:48,513 ERROR TP-Processor2
org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/sakai-site-m
anage-tool].[sakai.siteinfo] - Servlet.service() for servlet
sakai.siteinfo
threw exception
java.lang.ClassNotFoundException:
org.sakaiproject.util.ParameterParser
    at 
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.jav
a:1436)
    at 
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.jav
a:1282)
    at 
org.sakaiproject.vm.ComponentServlet.service(ComponentServlet.java:50)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
....
....
2010-08-04 11:45:48,550  WARN TP-Processor2
org.sakaiproject.portal.util.ErrorReporter - Bug Report bug-id:
eac7e5b0-7140-4634-aee2-848da62a4938 user:
189860c9-73fe-4198-87ce-e05e4ea84ff9 usage-session:
412d4030-f4d5-4540-bad2-a7ddc4dd9c05 time: Aug 4, 2010 11:45:48 user
comment: null stack trace
org.sakaiproject.portal.api.PortalHandlerException:
org.sakaiproject.tool.api.ToolException: Servlet execution threw an
exception
    at 
org.sakaiproject.portal.charon.SkinnableCharonPortal.doGet(SkinnableCharonPo
rtal.java:768)
caused by: org.sakaiproject.tool.api.ToolException: Servlet execution
threw
an exception
    at 
org.sakaiproject.portal.charon.SkinnableCharonPortal.forwardTool(SkinnableCh
aronPortal.java:1216)
caused by: javax.servlet.ServletException: Servlet execution threw an
exception
    at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterCh
ain.java:188)
caused by: java.lang.NoClassDefFoundError:
org/sakaiproject/util/ParameterParser
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
caused by: java.lang.ClassNotFoundException:
org.sakaiproject.util.ParameterParser
    at 
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.jav
a:1436)
    at 
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.jav
a:1282)
    at 
org.sakaiproject.vm.ComponentServlet.service(ComponentServlet.java:50)
....
....
2010-08-04 11:45:48,768  WARN TP-Processor2
org.sakaiproject.email.impl.BasicEmailService - Email.sendMail:
exception:
Could not connect to SMTP host: smtp.svsu.edu, port: 25
javax.mail.MessagingException: Could not connect to SMTP host:
smtp.svsu.edu, port: 25;
  nested exception is:
    java.net.SocketException: Too many open files
    at
com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:1706)
    at 
com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:525)
    at javax.mail.Service.connect(Service.java:291)
....
....
2010-08-04 11:46:18,545  WARN TP-Processor4
org.apache.jk.common.ChannelSocket - Exception executing accept
java.net.SocketException: Too many open files
    at java.net.PlainSocketImpl.socketAccept(Native Method)
    at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:390)
    at java.net.ServerSocket.implAccept(ServerSocket.java:453)
    at java.net.ServerSocket.accept(ServerSocket.java:421)
    at
org.apache.jk.common.ChannelSocket.accept(ChannelSocket.java:313)
    at 
org.apache.jk.common.ChannelSocket.acceptConnections(ChannelSocket.java:667)
    at 
org.apache.jk.common.ChannelSocket$SocketAcceptor.runIt(ChannelSocket.java:8
78)
    at 
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPoo
l.jav
a:689)
    at java.lang.Thread.run(Thread.java:619)
....
....
---End errors---

The weird thing is, if I copy in the same copy of the
sakai-site-manage-tool.war into webapps and Tomcat redeploys it, all
is
well.

I have tried setting the lines in /etc/security/limits.conf and
rebooting
the server, but to no avail:
tomcat  hard    nofile  100000
tomcat  soft    nofile  100000

What is going on? Anyone direct me down the appropriate path??

Thanks,
Bob

----
Robert E. Long, MA
Saginaw Valley State University
Open Source Programmer / Analyst
Math / Education Technology Instructor
M.A. Instructional Technology
O: 989.964.2245







 

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