Is all this running on one server or do you have multiple "Servlet Exec" servers or IIS Servers? Are you running anything like this:
Web Server A Servlet Exec A Firewall -->Load Balancer------> Firewall ------>Load Balander----> Web Server B Servlet Exec B If you do "Web Server A" could have a session to "Servlet Exec A" and then magically switch to B in the middle of a transaction and cause this error to occur. If I understand right this error has to do with the connectivity between the "Web Server" and the "JSP Engine" whatever that might be (in your case it is Servlet Exec). There may be a timeout setting on your web server that is causing this issue to occur. If you connect directly to "Servlet Exec" then you probably won't get this error. I am assuming you are running Apache or IIS for you web server ... so it may be a timeout setting on the connection between the web server and servlet exec. Hope that helps ... Thanks, Sean From: Action Request System discussion list(ARSList) [mailto:[EMAIL PROTECTED] On Behalf Of Craig Carter Sent: Thursday, May 01, 2008 8:34 AM To: arslist@ARSLIST.ORG Subject: Q: Underlying Specifics - Data Connection ** We've been experiencing an intermittent connection error for the past couple of years and it is something we really need to try to resolve. By intermittent, the application works great for everyone most of the time but occasionally, the following error pops up: "Unable to set up a data connection, which is preventing the application from working correctly. (ARERR 9351)" We're behind some firewalls and this pops up in a browser session while performing a save and/or performing a retrieval of information. Our midtier is located a couple thousand miles away from our database server and the midtier and database are set to use a specific port. Our assumption is that at that moment, there is a brief connectivity problem that causes this-especially since it appears more often at certain offsite locations that at others. We have submitted a ticket to BMC since the error guide simply adds "An internal error occurred during a back channel request from the browser to the mid tier server." I'm basically looking for anyone who might have more information on what underlying problem would cause this specific message? What kind of back channel request? It is related to something specific that we could possible code around? Any ideas are appreciated. I'll be turning on all of the logs and looking for an answer but wanted to tap the combined expertise for possible remedies... ARS 7.0.1 P5 Windows Server 2003 ServletExec 5 AS Java 1.5.0_15 SQL Server 2005 Craig Carter Software Engineer, RSP __Platinum Sponsor: www.rmsportal.com ARSlist: "Where the Answers Are" html___ _______________________________________________________________________________ UNSUBSCRIBE or access ARSlist Archives at www.arslist.org Platinum Sponsor: www.rmsportal.com ARSlist: "Where the Answers Are"