>Hi John,
>
>The jrun closed connection error is not cut and dry, it can be caused by a
>number of things. I just finished writing a technote about this topic, here
>is the preliminary text that will probably change through the edit cycle:
>
>
>
>The "JRun Closed Connection" error is caused by an issue occurring in the
>JVM which in turn causes the JVM to close the socket that is open from the
>external webserver connector, such as IIS, Apache, or iPlanet, to JRun. The
>JVM problem can occur due to several different issues, such as:
>
>
>
>1. outOfMemory or the JVM approaches the max heap
>
>2. Native code in a CFX or COM objects causes an error in the JVM
>
>The memory condition can also occur due to several different issues, most
>commonly:
>
>1. If debugging is left on in production. Make sure you have it turned
>completely off on production servers.
>
>2. Large resultsets are returned from the database taking up a
>significant amount of memory. Reduce the size of database results you are
>returning.
>
>
>
>
>
> This technote will provide you with steps for debugging the root cause.
>
>
>
>1. In The ColdFusion Administrator\Server Settings\Settings Page turn
>on "timeout requests" and set the value to 30 seconds
>2. In The ColdFusion Administrator\Debugging & Logging\Logging Settings
>turn on "log slow running pages" and set the value to 30 seconds
>3. Upgrade your jvm to the latest 1.4.2_04 jdk
><http://java.sun.com/j2se/1.4.2/download.html>
>http://java.sun.com/j2se/1.4.2/download.html. When you install, it will
>install to your c drive by default. For example.
>
>
>
>C:\j2sdk1.4.2_03
>
>
>
>In the ColdFusion Administrator--> JVM Settings page point the jvm in the CF
>Admin to this path.
>
>
>
>4. Enable JRun Metrics in
>{cfusion}/runtime/servers/default/SERVER-INF/jrun.xml:
>
>Make a backup of {cfusion}/runtime/servers/default/SERVER-INF/jrun.xml
>Uncomment the entry
><service class="jrunx.metrics.MetricsService" name="MetricsService">
><attribute name="bindToJNDI">true</attribute>
></service>
>
>Inside of <service class="jrunx.logger.LoggerService" name="LoggerService">
>modify
><attribute name="metricsEnabled">true</attribute>
><attribute name="metricsLogFrequency">5</attribute>
>
>
>
>5. Enable verbose Garbage Collection in the ColdFusion
>Administrator\Server Settings\Java and JVM\JVM Arguments by adding the
>following arguments:
>
>
>
> -XX:+PrintGCDetails -XX:+PrintGCTimeStamps -XX:+PrintHeapAtGC
>
>
>
>6. Stop ColdFusion
>
>
>
>7. Delete all the logs in {cfusion}/logs and {cfusion}/runtime/logs
>
>
>
>8. Start ColdFusion so we can produce a stack trace, for example as per
>this article:
><http://www.macromedia.com/support/coldfusion/ts/documents/tn18339.htm>
>http://www.macromedia.com/support/coldfusion/ts/documents/tn18339.htm
>
>From the cmd c:\CFusionMX\bin\ cfstart > out.txt
>
>9. Run cfstat so we can see the requests:
>
>From the cmd c:\CFusionMX\bin\ cfstat 5 >c:\cfusionmx\logs\cfstat.out
>
>10. When the site becomes unresponsive do a stack trace, examine the stack
>trace, cfstat and log files or contact Technical Support with these files.
>
>I would practice running a stack trace (set focus to the DOS window and
>press Ctrl-Break) and then look at the out.txt for the text "Full Thread
>Dump", it will be after all of the services starting info. If it's not there
>then it didn't work.
>
>Christine
>
>
>
>
>
>-----Original Message-----
>From: John Croney [mailto:[EMAIL PROTECTED]
>Sent: Thursday, April 01, 2004 2:00 PM
>To: CF-Talk
>Subject: Re: JRun has closed connection
>
>
>
>I could realy do with some help here!
>
>My problem is that I am still getting JRun closed connecton on users
>systems.
>
>So far I have:
> Check the logs- No errors
> Install update and requested that it do a full install insted.
> Entered Key when runing update.
>
>Should I remove coldfusion and reinstall it useing the key then add the
>update?
>
>Please help.
>
>Thank you
>
>John
>
> _____
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