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<DIV><SPAN class=411265810-12012010><FONT face=Arial size=2>Hi
everyone</FONT></SPAN></DIV>
<DIV><SPAN class=411265810-12012010><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=411265810-12012010><FONT face=Arial size=2>One of our OpenCms
servers froze up today, and I can't really see why it did. It has
been running for quite some time without notable problems,
and the only thing special about today is that there has recently been
a bit more traffic than usual (but still not very much
traffic).</FONT></SPAN></DIV>
<DIV><SPAN class=411265810-12012010><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=411265810-12012010><FONT face=Arial size=2>Here's the
snippet from ${TOMCAT_HOME}/logs/localhost.2010-01-12.log:</FONT></SPAN></DIV>
<DIV><SPAN class=411265810-12012010><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=411265810-12012010><FONT face=Arial size=2>Jan 12, 2010
10:07:01 AM org.apache.catalina.core.StandardHostValve
custom<BR> 295 SEVERE: Exception Processing
ErrorPage[errorCode=500,
location=/opencms-errorhandler/system/handler/handle500.html]<BR>
296 org.opencms.main.CmsInitException: OpenCms is already
initialized!<BR>
297 at
org.opencms.main.OpenCmsCore.getInstance(OpenCmsCore.java:289)<BR>
298 at
org.opencms.main.OpenCms.getDefaultUsers(OpenCms.java:201)<BR>
299 at
org.opencms.file.CmsUser.isGuestUser(CmsUser.java:504)<BR>
300 at
org.opencms.main.OpenCmsCore.errorHandling(OpenCmsCore.java:1869)<BR>
301 at
org.opencms.main.OpenCmsCore.showResource(OpenCmsCore.java:1494)<BR>
302 at
org.opencms.main.OpenCmsServlet.doGet(OpenCmsServlet.java:153)<BR>
303 at
org.opencms.main.OpenCmsServletErrorHandler.doGet(OpenCmsServletErrorHandler.java:82)<BR>
304 at
javax.servlet.http.HttpServlet.service(HttpServlet.java:627)<BR>
305 at
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)<BR>
306 at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)<BR>
307 at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)<BR>
308 at
org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:679)<BR>
309 at
org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:463)<BR>
310 at
org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:399)<BR>
311 at
org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301)<BR>
312 at
org.apache.catalina.core.StandardHostValve.custom(StandardHostValve.java:364)<BR>
313 at
org.apache.catalina.core.StandardHostValve.status(StandardHostValve.java:285)<BR>
314 at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137)<BR>
315 at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)<BR>
316 at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108)<BR>
317 at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:174)<BR>
318 at
org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:200)<BR>
319 at
org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:283)<BR>
320 at
org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:773)<BR>
321 at
org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:703)<BR>
322 at
org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:895)<BR>
323 at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689)<BR>
324 at
java.lang.Thread.run(Thread.java:619)</FONT></SPAN></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><SPAN class=411265810-12012010><FONT face=Arial size=2>Identical exception
(same timestamp) follows again nine more times,<BR>then the exception below
follows identically 7 times in a row.</FONT></SPAN></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><SPAN class=411265810-12012010><FONT face=Arial size=2>Jan 12, 2010
10:07:01 AM org.apache.catalina.core.StandardHostValve
custom<BR> 536 SEVERE: Exception Processing
ErrorPage[errorCode=500,
location=/opencms-errorhandler/system/handler/handle500.html]<BR>
537 java.lang.NullPointerException<BR>
538 at
org.apache.log4j.spi.LocationInfo.<init>(LocationInfo.java:112)<BR>
539 at
org.apache.log4j.spi.LoggingEvent.getLocationInformation(LoggingEvent.java:247)<BR>
540 at
org.apache.log4j.helpers.PatternParser$ClassNamePatternConverter.getFullyQualifiedName(PatternParser.java:538)<BR>
541 at
org.apache.log4j.helpers.PatternParser$NamedPatternConverter.convert(PatternParser.java:511)<BR>
542 at
org.apache.log4j.helpers.PatternConverter.format(PatternConverter.java:65)<BR>
543 at
org.apache.log4j.PatternLayout.format(PatternLayout.java:502)<BR>
544 at
org.apache.log4j.WriterAppender.subAppend(WriterAppender.java:302)<BR>
545 at
org.apache.log4j.RollingFileAppender.subAppend(RollingFileAppender.java:263)<BR>
546 at
org.apache.log4j.WriterAppender.append(WriterAppender.java:160)<BR>
547 at
org.apache.log4j.AppenderSkeleton.doAppend(AppenderSkeleton.java:251)<BR>
548 at
org.apache.log4j.helpers.AppenderAttachableImpl.appendLoopOnAppenders(AppenderAttachableImpl.java:66)<BR>
549 at
org.apache.log4j.Category.callAppenders(Category.java:206)<BR>
550 at
org.apache.log4j.Category.forcedLog(Category.java:391)<BR>
551 at
org.apache.log4j.Category.log(Category.java:856)<BR>
552 at
org.apache.commons.logging.impl.Log4JLogger.error(Log4JLogger.java:257)<BR>
553 at
org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:719)<BR>
554 at
org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:463)<BR>
555 at
org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:399)<BR>
556 at
org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301)<BR>
557 at
org.apache.catalina.core.StandardHostValve.custom(StandardHostValve.java:364)<BR>
558 at
org.apache.catalina.core.StandardHostValve.status(StandardHostValve.java:285)<BR>
559 at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137)<BR>
560 at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)<BR>
561 at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108)<BR>
562 at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:174)<BR>
563 at
org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:200)<BR>
564 at
org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:283)<BR>
565 at
org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:773)<BR>
566 at
org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:703)<BR>
567 at
org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:895)<BR>
568 at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689)<BR>
569 at
java.lang.Thread.run(Thread.java:619)<BR></FONT></SPAN></DIV>
<DIV><SPAN class=411265810-12012010><FONT face=Arial size=2><SPAN
class=411265810-12012010><FONT face=Arial size=2>Does anyone have an
idea what could have caused this?</FONT></SPAN></FONT></SPAN></DIV>
<DIV><SPAN class=411265810-12012010><FONT face=Arial size=2><SPAN
class=411265810-12012010></SPAN></FONT></SPAN> </DIV>
<DIV><SPAN class=411265810-12012010><FONT face=Arial size=2><SPAN
class=411265810-12012010></SPAN></FONT></SPAN> </DIV>
<DIV><SPAN class=411265810-12012010><FONT face=Arial
size=2>Thanks,</FONT></SPAN></DIV>
<DIV><SPAN class=411265810-12012010><FONT face=Arial
size=2>Paul</DIV></FONT></SPAN></BODY></HTML>