John,

Unfortunately, there's not much info there to go on, as the error seems 
very general.  But, here's a few things you may want to try:

(1) Rebuild your search indexes in DSpace:
     For DSpace 1.4.x and below:  [dspace]/bin/index-all
     For DSpace 1.5.x:  [dspace]/bin/index-update

(2) Restart Tomcat

Since your errors are only occurring during searches, I'm hopeful that 
you may just be able to do #1 to get things back up and running. 
However, if that doesn't resolve things, you may wish to try #2 as well.

Hopefully one of these will help you get back up and running error-free.

Best of luck,

- Tim

John Furfey wrote:
> Hi,
> 
> We're getting an error like this about once a minute.  Almost everytime 
> someone does a search.  Any ideas?
> 
> An internal server error occurred on https://darchive.mblwhoilibrary.org 
> <https://darchive.mblwhoilibrary.org/>:
> 
> Date:       1/16/09 10:20 AM
> Session ID: 9CA25E32A826A66F7F0F0F8D1501237E
> 
> -- URL 
> Was: https://darchive.mblwhoilibrary.org/simple-search?query=GSC&submit=Go 
> <https://darchive.mblwhoilibrary.org/simple-search?query=GSC&submit=Go>
> -- Method: GET
> -- Parameters were:
> -- submit: "Go"
> -- query: "GSC"
> 
> 
> Exception:
> javax.servlet.ServletException: Servlet execution threw an exception
> at 
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
> at 
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
> at 
> org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:243)
> at 
> org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
> at 
> org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
> at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
> at 
> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:190)
> at 
> org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
> at 
> org.apache.catalina.valves.CertificatesValve.invoke(CertificatesValve.java:246)
> at 
> org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
> at 
> org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
> at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
> at 
> org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2347)
> at 
> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180)
> at 
> org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
> at 
> org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:170)
> at 
> org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
> at 
> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:170)
> at 
> org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
> at 
> org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
> at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
> at 
> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:174)
> at 
> org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
> at 
> org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
> at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
> at 
> org.apache.catalina.connector.warp.WarpRequestHandler.handle(WarpRequestHandler.java:217)
> at 
> org.apache.catalina.connector.warp.WarpConnection.run(WarpConnection.java:194)
> at java.lang.Thread.run(Thread.java:595)
> 
> 
> -------------------------------------------------------------
> John Furfey
> Digital Systems and Services Coordinator
> MBLWHOI Library
> Woods Hole, MA 02543 USA
> PHONE:  508-289-7435
> EMAIL:  [email protected] <mailto:[email protected]>
> http://www.mblwhoilibrary.org
> 
> 
> 
> 
> 
> 
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> 
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> _______________________________________________
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-- 
Tim Donohue
Research Programmer, IDEALS
http://www.ideals.uiuc.edu/
University of Illinois
[email protected] | (217) 333-4648

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