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Could not connect to JRUN server

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Author:
Nathan Strutz
10/22/2003 02:20 PM

Hi everyone, We have CFMX 6.1 standard install running on Win2K/IIS, all with the latest patches, versions and whatnot. As our sites continue to get busy, we've been starting to see this error: "Server Error The server encountered an internal error and was unable to complete your request. Could not connect to JRun Server." It's been happening more and more lately. Sometimes we'll see it and it will just go away if we reload the page, then reloading again will bring it back. Other times it's 100% down. Restarting the CF service or the whole server will fix it for an hour or so. Sometimes it fixes itself. It doesn't happen at certain times, not necessarily at peak times either. We've been able to duplicate it with <cfx_image>, even with exclusive locking, putting stress on the tag will produce this error, so we switched it for ImageMagick, but it still happens (we get <100 photos a day). In our experience Jrun is flaky and coldfusion will crash if (a) the mail server is slow or unresponsive, (b) sql server is slow or unresponsive (c) we change the time on the web server, (d) poor multi-threading in a 3rd party app or tag we use or (e) we breath funny or look at it the wrong way. Our sites are pretty well optimized, they run VERY fast, even at peak times. It's not necessarily bad coding. If anyone has dealt with this or knows how to help us or knows anyone who can help us, we would be VERY appreciative. (especially me, as my boss is threatening to make us rewrite the sites in .NET) thanks -nathan strutz

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Author:
Joe Eugene
10/22/2003 03:04 PM

I have seen some strange issues with CFMX 6.1 J2EE as well. JRun.exe keeps running at 100% for simple database requests and then crashes the server. Seems unstable to me. Has anyone been able to run CFMX 6.1 J2EE (JRun) on production stable? Thanks Joe Eugene   Hi everyone,   We have CFMX 6.1 standard install running on Win2K/IIS, all with the latest   patches, versions and whatnot. As our sites continue to get busy, we've been   starting to see this error:   "Server Error   The server encountered an internal error and was unable to complete your   request.   Could not connect to JRun Server."   It's been happening more and more lately. Sometimes we'll see it and it will   just go away if we reload the page, then reloading again will bring it back.   Other times it's 100% down. Restarting the CF service or the whole server   will fix it for an hour or so. Sometimes it fixes itself.   It doesn't happen at certain times, not necessarily at peak times either.   We've been able to duplicate it with <cfx_image>, even with exclusive   locking, putting stress on the tag will produce this error, so we switched   it for ImageMagick, but it still happens (we get <100 photos a day).   In our experience Jrun is flaky and coldfusion will crash if (a) the mail   server is slow or unresponsive, (b) sql server is slow or unresponsive (c)   we change the time on the web server, (d) poor multi-threading in a 3rd   party app or tag we use or (e) we breath funny or look at it the wrong way.   Our sites are pretty well optimized, they run VERY fast, even at peak times.   It's not necessarily bad coding.   If anyone has dealt with this or knows how to help us or knows anyone who   can help us, we would be VERY appreciative.   (especially me, as my boss is threatening to make us rewrite the sites in   .NET)   thanks   -nathan strutz

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Author:
Calvin Ward
10/22/2003 05:34 PM

That sounds like this issue: http://www.macromedia.com/support/coldfusion/ts/documents/cfmx61_sqlserver_cpu.htm Thanks, Calvin   I have seen some strange issues with CFMX 6.1 J2EE as well. JRun.exe keeps running at 100% for   simple database requests and then crashes the server.   Seems unstable to me. Has anyone been able to run CFMX 6.1 J2EE (JRun) on production stable?   Thanks   Joe Eugene     Hi everyone,     We have CFMX 6.1 standard install running on Win2K/IIS, all with the latest     patches, versions and whatnot. As our sites continue to get busy, we've been     starting to see this error:     "Server Error     The server encountered an internal error and was unable to complete your     request.     Could not connect to JRun Server."     It's been happening more and more lately. Sometimes we'll see it and it will     just go away if we reload the page, then reloading again will bring it back.     Other times it's 100% down. Restarting the CF service or the whole server     will fix it for an hour or so. Sometimes it fixes itself.     It doesn't happen at certain times, not necessarily at peak times either.     We've been able to duplicate it with <cfx_image>, even with exclusive     locking, putting stress on the tag will produce this error, so we switched     it for ImageMagick, but it still happens (we get <100 photos a day).     In our experience Jrun is flaky and coldfusion will crash if (a) the mail     server is slow or unresponsive, (b) sql server is slow or unresponsive (c)     we change the time on the web server, (d) poor multi-threading in a 3rd     party app or tag we use or (e) we breath funny or look at it the wrong way.     Our sites are pretty well optimized, they run VERY fast, even at peak times.     It's not necessarily bad coding.     If anyone has dealt with this or knows how to help us or knows anyone who     can help us, we would be VERY appreciative.     (especially me, as my boss is threatening to make us rewrite the sites in     .NET)     thanks     -nathan strutz

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Author:
Nathan Strutz
10/22/2003 05:58 PM

Thanks, Unfortunately we have already applied this patch (which did help solve its intended problem), and our web servers CPUs tend to be low, up to 25% and down near 5% normally. These boxes really aren't that busy, but we still get the error. -nathan strutz That sounds like this issue: http://www.macromedia.com/support/coldfusion/ts/documents/cfmx61_sqlserver_c pu.htm Thanks, Calvin   I have seen some strange issues with CFMX 6.1 J2EE as well. JRun.exe keeps running at 100% for   simple database requests and then crashes the server.   Seems unstable to me. Has anyone been able to run CFMX 6.1 J2EE (JRun) on production stable?   Thanks   Joe Eugene     Hi everyone,     We have CFMX 6.1 standard install running on Win2K/IIS, all with the latest     patches, versions and whatnot. As our sites continue to get busy, we've been     starting to see this error:     "Server Error     The server encountered an internal error and was unable to complete your     request.     Could not connect to JRun Server."     It's been happening more and more lately. Sometimes we'll see it and it will     just go away if we reload the page, then reloading again will bring it back.     Other times it's 100% down. Restarting the CF service or the whole server     will fix it for an hour or so. Sometimes it fixes itself.     It doesn't happen at certain times, not necessarily at peak times either.     We've been able to duplicate it with <cfx_image>, even with exclusive     locking, putting stress on the tag will produce this error, so we switched     it for ImageMagick, but it still happens (we get <100 photos a day).     In our experience Jrun is flaky and coldfusion will crash if (a) the mail     server is slow or unresponsive, (b) sql server is slow or unresponsive (c)     we change the time on the web server, (d) poor multi-threading in a 3rd     party app or tag we use or (e) we breath funny or look at it the wrong way.     Our sites are pretty well optimized, they run VERY fast, even at peak times.     It's not necessarily bad coding.     If anyone has dealt with this or knows how to help us or knows anyone who     can help us, we would be VERY appreciative.     (especially me, as my boss is threatening to make us rewrite the sites in     .NET)     thanks     -nathan strutz

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Author:
Nathan Strutz
10/22/2003 06:04 PM

Oops, my mistake, I just realized that Calvin's message was intended for Mr. Eugene. Yes, Joe, install the patch! (sorry) -nathan strutz Thanks, Unfortunately we have already applied this patch (which did help solve its intended problem), and our web servers CPUs tend to be low, up to 25% and down near 5% normally. These boxes really aren't that busy, but we still get the error. -nathan strutz That sounds like this issue: http://www.macromedia.com/support/coldfusion/ts/documents/cfmx61_sqlserver_c pu.htm Thanks, Calvin   I have seen some strange issues with CFMX 6.1 J2EE as well. JRun.exe keeps running at 100% for   simple database requests and then crashes the server.   Seems unstable to me. Has anyone been able to run CFMX 6.1 J2EE (JRun) on production stable?   Thanks   Joe Eugene

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Author:
Joe Eugene
10/23/2003 04:27 PM

Thanks Calvin, unfortunately the DB is U2 (Universe) Multivalue database.  I can get everything working ok in CFMX 6.0 ENT Standalone. When i switch to CFMX 6.1 (any version), it crashes JRun Instance on a single "Update" request to the DB. There seems to be an Implemenation difference between CFMX 6.0 and CFMX 6.1 of External DB Drivers. Thanks, Joe Eugene   That sounds like this issue: http://www.macromedia.com/support/coldfusion/ts/documents/cfmx61_sqlserver_cpu.htm   Thanks,   Calvin     I have seen some strange issues with CFMX 6.1 J2EE as well. JRun.exe keeps running at 100% for     simple database requests and then crashes the server.     Seems unstable to me. Has anyone been able to run CFMX 6.1 J2EE (JRun) on production stable?     Thanks     Joe Eugene       Hi everyone,       We have CFMX 6.1 standard install running on Win2K/IIS, all with the latest       patches, versions and whatnot. As our sites continue to get busy, we've been       starting to see this error:       "Server Error       The server encountered an internal error and was unable to complete your       request.       Could not connect to JRun Server."       It's been happening more and more lately. Sometimes we'll see it and it will       just go away if we reload the page, then reloading again will bring it back.       Other times it's 100% down. Restarting the CF service or the whole server       will fix it for an hour or so. Sometimes it fixes itself.       It doesn't happen at certain times, not necessarily at peak times either.       We've been able to duplicate it with <cfx_image>, even with exclusive       locking, putting stress on the tag will produce this error, so we switched       it for ImageMagick, but it still happens (we get <100 photos a day).       In our experience Jrun is flaky and coldfusion will crash if (a) the mail       server is slow or unresponsive, (b) sql server is slow or unresponsive (c)       we change the time on the web server, (d) poor multi-threading in a 3rd       party app or tag we use or (e) we breath funny or look at it the wrong way.       Our sites are pretty well optimized, they run VERY fast, even at peak times.       It's not necessarily bad coding.       If anyone has dealt with this or knows how to help us or knows anyone who       can help us, we would be VERY appreciative.       (especially me, as my boss is threatening to make us rewrite the sites in       .NET)       thanks       -nathan strutz

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Author:
Calvin Ward
10/23/2003 06:36 PM

In that case, you might want to try these: http://download.macromedia.com/pub/coldfusion/drivers/3.1/cfmx60_u3.zip ( found this link here: http://webforums.macromedia.com/coldfusion/messageview.cfm?catid=6&threadid=684306 ). These are the drivers that were provided pre 6.1. Stop CF, Rename your existing file, replace with this, and restart CF. If it doesn't help or causes additional issues, you can switch back pretty quickly. - Calvin   Thanks Calvin, unfortunately the DB is U2 (Universe) Multivalue database.  I can get everything working   ok in CFMX 6.0 ENT Standalone. When i switch to CFMX 6.1 (any version), it crashes JRun Instance on   a single "Update" request to the DB.   There seems to be an Implemenation difference between CFMX 6.0 and CFMX 6.1 of External DB Drivers.   Thanks,   Joe Eugene     That sounds like this issue: http://www.macromedia.com/support/coldfusion/ts/documents/cfmx61_sqlserver_cpu.htm     Thanks,     Calvin       I have seen some strange issues with CFMX 6.1 J2EE as well. JRun.exe keeps running at 100% for       simple database requests and then crashes the server.       Seems unstable to me. Has anyone been able to run CFMX 6.1 J2EE (JRun) on production stable?       Thanks       Joe Eugene         Hi everyone,         We have CFMX 6.1 standard install running on Win2K/IIS, all with the latest         patches, versions and whatnot. As our sites continue to get busy, we've been         starting to see this error:         "Server Error         The server encountered an internal error and was unable to complete your         request.         Could not connect to JRun Server."         It's been happening more and more lately. Sometimes we'll see it and it will         just go away if we reload the page, then reloading again will bring it back.         Other times it's 100% down. Restarting the CF service or the whole server         will fix it for an hour or so. Sometimes it fixes itself.         It doesn't happen at certain times, not necessarily at peak times either.         We've been able to duplicate it with <cfx_image>, even with exclusive         locking, putting stress on the tag will produce this error, so we switched         it for ImageMagick, but it still happens (we get <100 photos a day).         In our experience Jrun is flaky and coldfusion will crash if (a) the mail         server is slow or unresponsive, (b) sql server is slow or unresponsive (c)         we change the time on the web server, (d) poor multi-threading in a 3rd         party app or tag we use or (e) we breath funny or look at it the wrong way.         Our sites are pretty well optimized, they run VERY fast, even at peak times.         It's not necessarily bad coding.         If anyone has dealt with this or knows how to help us or knows anyone who         can help us, we would be VERY appreciative.         (especially me, as my boss is threatening to make us rewrite the sites in         .NET)         thanks         -nathan strutz

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Author:
Joe Eugene
10/24/2003 12:29 AM

Thanks Calvin, i switched back to CFMX 6.0 for a Research Project. I will try this once i switch back to CFMX 6.1. MM Really needs to take of this issue. Joe Eugene   In that case, you might want to try these: http://download.macromedia.com/pub/coldfusion/drivers/3.1/cfmx60_u3.zip ( found this link here: http://webforums.macromedia.com/coldfusion/messageview.cfm?catid=6&threadid= 684306 ).   These are the drivers that were provided pre 6.1.   Stop CF, Rename your existing file, replace with this, and restart CF. If it doesn't help or causes additional issues, you can switch back pretty quickly.   - Calvin     Thanks Calvin, unfortunately the DB is U2 (Universe) Multivalue database.  I can get everything working     ok in CFMX 6.0 ENT Standalone. When i switch to CFMX 6.1 (any version), it crashes JRun Instance on     a single "Update" request to the DB.     There seems to be an Implemenation difference between CFMX 6.0 and CFMX 6.1 of External DB Drivers.     Thanks,     Joe Eugene       That sounds like this issue: http://www.macromedia.com/support/coldfusion/ts/documents/cfmx61_sqlserver_c pu.htm       Thanks,       Calvin         I have seen some strange issues with CFMX 6.1 J2EE as well. JRun.exe keeps running at 100% for         simple database requests and then crashes the server.         Seems unstable to me. Has anyone been able to run CFMX 6.1 J2EE (JRun) on production stable?         Thanks         Joe Eugene           Hi everyone,           We have CFMX 6.1 standard install running on Win2K/IIS, all with the latest           patches, versions and whatnot. As our sites continue to get busy, we've been           starting to see this error:           "Server Error           The server encountered an internal error and was unable to complete your           request.           Could not connect to JRun Server."           It's been happening more and more lately. Sometimes we'll see it and it will           just go away if we reload the page, then reloading again will bring it back.           Other times it's 100% down. Restarting the CF service or the whole server           will fix it for an hour or so. Sometimes it fixes itself.           It doesn't happen at certain times, not necessarily at peak times either.           We've been able to duplicate it with <cfx_image>, even with exclusive           locking, putting stress on the tag will produce this error, so we switched           it for ImageMagick, but it still happens (we get <100 photos a day).           In our experience Jrun is flaky and coldfusion will crash if (a) the mail           server is slow or unresponsive, (b) sql server is slow or unresponsive (c)           we change the time on the web server, (d) poor multi-threading in a 3rd           party app or tag we use or (e) we breath funny or look at it the wrong way.           Our sites are pretty well optimized, they run VERY fast, even at peak times.           It's not necessarily bad coding.           If anyone has dealt with this or knows how to help us or knows anyone who           can help us, we would be VERY appreciative.           (especially me, as my boss is threatening to make us rewrite the sites in           .NET)           thanks           -nathan strutz

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Author:
Walt Sparrow-Hood
10/22/2003 03:35 PM

Nathan, I've ben struggling with the same useless error message for over a week.  I finally nailed it down to a problem in the following statement: <cfscript> ...... getPageContext().forward("foo.cfm"); </cfscript> The strange part was that foo.cfm displayed OK but any links from that page resulted in the error message, but a page refresh always then took you to the right page.  It seemed like the forward somehow left a connection in place that then was not available for the next request. I solved the problem (I think) by changing the forward to a normal CF include.  We still don't understand what the problem was - if anybody has any thoughts I'd like to hear them.  Hope our experience might be some holp for you Nathan. ----- Excess quoted text cut - see Original Post for more -----

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Author:
Nathan Strutz
10/22/2003 06:02 PM

Walt, That's amazing that you've narrowed it down to that one line. Unfortunately for us, it's not that simple. I don't have any calls to getpagecontext() in my site, just regular includes, cflocations and the like. And it doesn't seem to happen on just one page, just one area or just one line of code, it's random and allthroughout. Thanks for the input though -nathan strutz Nathan, I've ben struggling with the same useless error message for over a week.  I finally nailed it down to a problem in the following statement: <cfscript> ...... getPageContext().forward("foo.cfm"); </cfscript> The strange part was that foo.cfm displayed OK but any links from that page resulted in the error message, but a page refresh always then took you to the right page.  It seemed like the forward somehow left a connection in place that then was not available for the next request. I solved the problem (I think) by changing the forward to a normal CF include.  We still don't understand what the problem was - if anybody has any thoughts I'd like to hear them.  Hope our experience might be some holp for you Nathan. >Hi everyone, > >We have CFMX 6.1 standard install running on Win2K/IIS, all with the latest >patches, versions and whatnot. As our sites continue to get busy, we've been ----- Excess quoted text cut - see Original Post for more ----- will >just go away if we reload the page, then reloading again will bring it back. ----- Excess quoted text cut - see Original Post for more ----- times. ----- Excess quoted text cut - see Original Post for more -----


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