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 ___ UNSUBSCRIBE or access ARSlist Archives at www.arslist.org Platinum Sponsor: www.rmsportal.com ARSlist: Where the Answers Are
Re: Q: Underlying Specifics - Data Connection
Are you using Mid Tier 7.1 Patch 002? What browser are your users using? Thanks Peter Lammey ESPN MIT Technical Services Applications Management 860-766-4761 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___ Please consider the environment before printing this e-mail. ___ UNSUBSCRIBE or access ARSlist Archives at www.arslist.org Platinum Sponsor: www.rmsportal.com ARSlist: Where the Answers Are
Re: Q: Underlying Specifics - Data Connection
Using Midtier v7.0.1 P5 as listed below (database and midtier on same version). Majority of users are using Internet Explorer 7. The additional info in the error guide seems to indicate a problem between the user's web browser and the midtier and not between the midtier and database. I'm having them clear their cache, cookies, forms, etc, and checking their Java settings and Objects. Craig Carter Software Engineer, RSP From: Action Request System discussion list(ARSList) [mailto:[EMAIL PROTECTED] On Behalf Of Lammey, Peter A. Sent: Thursday, May 01, 2008 6:42 AM To: arslist@ARSLIST.ORG Subject: Re: Q: Underlying Specifics - Data Connection Are you using Mid Tier 7.1 Patch 002? What browser are your users using? Thanks Peter Lammey ESPN MIT Technical Services Applications Management 860-766-4761 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___ Please consider the environment before printing this e-mail. __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
Re: Q: Underlying Specifics - Data Connection
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
Re: Q: Underlying Specifics - Data Connection
Thanks for the response Sean, We are not running any load balancers. We have two configurations but the error occurs on both: Web Server A (IIS 6, asp pages) Web Server B (IIS 6, ServletExec, Midtier) Firewall Database Server Web Server A (IIS 6, asp pages, ServletExec, Midtier) Firewall Database Server This occurs even in the second example where everything resides on the same web server. I don't believe the firewall is a problem since both of these configurations work fine for the majority of people. They will be using only one of the above during their session (no crossover). The Remedy forms are running inside of iframes within asp wrapper pages so people access the web site pages via IIS and those asp pages call the Remedy content either via direct ViewFormServlet calls or jsp redirect files within the iframes. It may be a problem between IIS and ServletExec though and it gives me something else to look at. I may also have to consider testing with a different Servlet. I'm not sure I understand what you mean by connecting directly to ServletExec since it resides within IIS on the default site? I'm no IIS expert so any recommendations on what settings to look at/tweak would be helpful. Craig Carter Software Engineer, RSP From: Action Request System discussion list(ARSList) [mailto:[EMAIL PROTECTED] On Behalf Of Garrison, Sean (Norcross) Sent: Thursday, May 01, 2008 7:33 AM To: arslist@ARSLIST.ORG Subject: Re: Q: Underlying Specifics - Data Connection 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___ __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
Re: Q: Underlying Specifics - Data Connection
Also, anything that blocks an http request to servlet x will cause this error. I've seen this happen when an xss plugin on the web server disallowed certain requests. Axton Grams On Thu, May 1, 2008 at 9:33 AM, Garrison, Sean (Norcross) [EMAIL PROTECTED] wrote: ** 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___ __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
Re: Q: Underlying Specifics - Data Connection
Hi Axton, This is actually all https and the web site is anonymous access (standard IUSR account) so ServletExec should be available to any request. Wouldn't all requests to ServletExec come through using the standard https protocol? Craig Carter -Original Message- From: Action Request System discussion list(ARSList) [mailto:[EMAIL PROTECTED] On Behalf Of Axton Sent: Thursday, May 01, 2008 8:13 AM To: arslist@ARSLIST.ORG Subject: Re: Q: Underlying Specifics - Data Connection Also, anything that blocks an http request to servlet x will cause this error. I've seen this happen when an xss plugin on the web server disallowed certain requests. Axton Grams On Thu, May 1, 2008 at 9:33 AM, Garrison, Sean (Norcross) [EMAIL PROTECTED] wrote: ** 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___ __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 ___ UNSUBSCRIBE or access ARSlist Archives at www.arslist.org Platinum Sponsor: www.rmsportal.com ARSlist: Where the Answers Are
Re: Q: Underlying Specifics - Data Connection
Protocol is irrelevant in the case I mentioned as the xss checker I had this experience with checked the url, not the content itself. the environment I worked with was very different (iPlanet, WebSphere, SSO via netegrity, load balanced mid-tier servers, solaris, etc.). The important point to note is anything that sits between the client and whatever services the request can interrupt the request: - web server - web server plugins (security plugins, etc.) - servlet container plugins (isapi plugin, etc.) - servlet container Chances are something in the stack is failing and/or blocking the request. Somewhere in the logs for each piece in the stack should provide the source of the problem. There is some limited debugging you can do from the client side for these types of things. Firebug for Firefox and Fiddler for IE come to mind. These can at least point you in a direction to chase. Axton Grams On Thu, May 1, 2008 at 10:27 AM, Craig Carter [EMAIL PROTECTED] wrote: Hi Axton, This is actually all https and the web site is anonymous access (standard IUSR account) so ServletExec should be available to any request. Wouldn't all requests to ServletExec come through using the standard https protocol? Craig Carter -Original Message- From: Action Request System discussion list(ARSList) [mailto:[EMAIL PROTECTED] On Behalf Of Axton Sent: Thursday, May 01, 2008 8:13 AM To: arslist@ARSLIST.ORG Subject: Re: Q: Underlying Specifics - Data Connection Also, anything that blocks an http request to servlet x will cause this error. I've seen this happen when an xss plugin on the web server disallowed certain requests. Axton Grams On Thu, May 1, 2008 at 9:33 AM, Garrison, Sean (Norcross) [EMAIL PROTECTED] wrote: ** 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
