Re: servlet start-up
Silvestre Turija Jr. wrote: sorry for the intrusion, I am having the same problem Internal Servlet Error kindly inform me I you got a fixed on this bug. Based on another unrelated discussion on this list, I tried starting tomcat (embedded in jboss) first and then apache - and it fixed my problem (code 500 Internal Server Errors when requesting a serlvet right after startup). I have just tried it once so far but it would be interesting to see if this fixes the problem for other people as well. Brian -- +---+--+ | Brian Elliott | Unplugged Systems / ESWC.com / | | President CTO | ES Innovation Labs | | [EMAIL PROTECTED] | MLS Unplugged Wireless Systems | | | http://www.unpluggedsystems.com | +---+--+
Re: servlet start-up
Brian, Yesterday, I got an answer from Marty Hall (author of Core Servlets JSPs ): Go to this URL and you'll get help: www.archive.coreservlets.com/Using-Tomcat.html Good Luck! Tom Hunter I/S Managed Health Care x6201 Brian Elliott belliott@unpluggedsyTo: [EMAIL PROTECTED] stems.com cc: tomcat [EMAIL PROTECTED] Subject: Re: servlet start-up 05/29/2001 01:02 PM Please respond to tomcat-user Rui, I am having the same problem with tomcat for my servlets as you described in your posting where you get an Internal Server Error when first requesting a servlet. Did you ever get the problem fixed? I am under some intense time pressures and would GREATLY appreciate any help. Thanks, Brian -- +---+--+ | Brian Elliott | Unplugged Systems / ESWC.com / | | President CTO | ES Innovation Labs | | [EMAIL PROTECTED] | MLS Unplugged Wireless Systems | | | http://www.unpluggedsystems.com | +---+--+
Re: servlet start-up
On Wed, 30 May 2001, Brian Elliott wrote: Silvestre Turija Jr. wrote: sorry for the intrusion, I am having the same problem Internal Servlet Error kindly inform me I you got a fixed on this bug. Based on another unrelated discussion on this list, I tried starting tomcat (embedded in jboss) first and then apache - and it fixed my problem (code 500 Internal Server Errors when requesting a serlvet right after startup). I have just tried it once so far but it would be interesting to see if this fixes the problem for other people as well. I don't have any particular suggestions for this problem, but I just want to point out that Internal Server Error is a very general error, indicating that there is some problem with some component of the server, and it could be one of a hundred or more things wrong. So specifying just that info and asking what's wrong is off-base. You're going to need to dig deeper and get some specifics about the problem, and give some details about the configuration (because it is often due to something related to the configuration). There is typically no magic bullet that will fix things when you have an Internal Server Error. Looking at the relevant log files for more detailed error messages is a good start. BTW, similar is true for some other errors, like OutOfMemoryError. In that case, something simple like upping the initial/max heap size may take care of the problem. On the other hand, it could very well be that the code is buggy and/or has a memory leak-type problem that is causing the memory usage to continue to grow. Resolving those errors may also take some further investigation. Milt Epstein Research Programmer Software/Systems Development Group Computing and Communications Services Office (CCSO) University of Illinois at Urbana-Champaign (UIUC) [EMAIL PROTECTED]
Re: servlet start-up
Rui, I am having the same problem with tomcat for my servlets as you described in your posting where you get an Internal Server Error when first requesting a servlet. Did you ever get the problem fixed? I am under some intense time pressures and would GREATLY appreciate any help. Thanks, Brian -- +---+--+ | Brian Elliott | Unplugged Systems / ESWC.com / | | President CTO | ES Innovation Labs | | [EMAIL PROTECTED] | MLS Unplugged Wireless Systems | | | http://www.unpluggedsystems.com | +---+--+
Re: servlet start-up
Rui, I am having the same problem with tomcat for my servlets as you described in your posting where you get an Internal Server Error when first requesting a servlet. Did you ever get the problem fixed? I am under some intense time pressures and would GREATLY appreciate any help. Thanks, Brian Reporting-MTA: dns; mail-in.namezero.com Arrival-Date: Tue, 29 May 2001 16:24:12 -0700 (PDT) Final-Recipient: rfc822; [EMAIL PROTECTED] Action: failed Status: 5.0.0 Diagnostic-Code: X-Postfix; host inbound.namezero.com.criticalpath.net[209.228.14.51] said: 550 User unknown Rui, I am having the same problem with tomcat for my servlets as you described in your posting where you get an Internal Server Error when first requesting a servlet. Did you ever get the problem fixed? I am under some intense time pressures and would GREATLY appreciate any help. Thanks, Brian -- +---+--+ | Brian Elliott | Unplugged Systems / ESWC.com / | | President CTO | ES Innovation Labs | | [EMAIL PROTECTED] | MLS Unplugged Wireless Systems | | | http://www.unpluggedsystems.com | +---+--+
Re: servlet start-up
On Tue, Apr 10, 2001 at 02:41:12PM -0400, Michael Wentzel wrote: On Tue, Apr 10, 2001 at 05:13:05PM +1000, Warren Crossing wrote: the load-on-startup child element of servlet in web.xml is documented and specified in the j2ee servlet stuff things.. Well, tomcat tells me it loads the servlets, but they still are only loaded when I hit them, thus getting an Apache Internal Server Error untill tomcat has them all properly "heated". load-on-startup doesn't solve that problem :( It may be of importance to note that the load-on-startup param just instantiates the servlet(calls the init method of the servlet) and does not make any requests to any of the services(doPost, doGet, etc...). And also note that there is an instance created for each servlet mapping you have configured plus the default webapps/myapp/servlets/MyServlet. I know that, but I had hopes that it would sove those "engine heating" problems that are pushing us towards an ugly alternative (jrun) against my will. Hugs, rms -- + No matter how much you do, you never do enough -- unknown + Whatever you do will be insignificant, | but it is very important that you do it -- Ghandi + So let's do it...?
RE: servlet start-up
the load-on-startup child element of servlet in web.xml is documented and specified in the j2ee servlet stuff things.. -Original Message- From: Pradeep Kumar [mailto:[EMAIL PROTECTED]] Sent: Tuesday, 10 April 2001 5:08 PM To: [EMAIL PROTECTED] Subject: servlet start-up Hello group, I am using tomcat 3.2.1 on win2k box. My requirement is that I need to instantiate my servlet when I start the tomcat server and not when the first request is hit. If anyone knows how to do this please reply to this email ASAP. Your help is highly appreciated. Thanks in advance, Pradeep
RE: servlet start-up
Warren, Thanks for your reply. I have one more question. What is the value that I need to give for load-on-startup child element of servlet in web.xml. I could not find this information. I saw people using a huge negative number, sometimes -1 and sometimes values like 1, 2 , 3, 5, etc. Now, what does this value indicate ? I am assuming that it can't be the number of instances of the servlet, because servlet 1.2 specification says that there can be only one instance of a servlet unless it's a single thread model. Thanks, pradeep -Original Message- From: Warren Crossing [mailto:[EMAIL PROTECTED]] Sent: Tuesday, April 10, 2001 12:43 PM To: '[EMAIL PROTECTED]' Subject:RE: servlet start-up the load-on-startup child element of servlet in web.xml is documented and specified in the j2ee servlet stuff things.. -Original Message- From: Pradeep Kumar [mailto:[EMAIL PROTECTED]] Sent: Tuesday, 10 April 2001 5:08 PM To: [EMAIL PROTECTED] Subject: servlet start-up Hello group, I am using tomcat 3.2.1 on win2k box. My requirement is that I need to instantiate my servlet when I start the tomcat server and not when the first request is hit. If anyone knows how to do this please reply to this email ASAP. Your help is highly appreciated. Thanks in advance, Pradeep
RE: servlet start-up
hi Pradeep, You can load a servlet at startup, refer tomcat documentation and read web.xml file.(it has a servlet loaded at startup, you can directly cog ). Shuklix Ps: web.xml comes with tomcat. -Original Message- From: Pradeep Kumar [mailto:[EMAIL PROTECTED]] Sent: Tuesday, April 10, 2001 12:38 PM To: [EMAIL PROTECTED] Subject: servlet start-up Hello group, I am using tomcat 3.2.1 on win2k box. My requirement is that I need to instantiate my servlet when I start the tomcat server and not when the first request is hit. If anyone knows how to do this please reply to this email ASAP. Your help is highly appreciated. Thanks in advance, Pradeep
Re: servlet start-up
On Tue, Apr 10, 2001 at 05:13:05PM +1000, Warren Crossing wrote: the load-on-startup child element of servlet in web.xml is documented and specified in the j2ee servlet stuff things.. Well, tomcat tells me it loads the servlets, but they still are only loaded when I hit them, thus getting an Apache Internal Server Error untill tomcat has them all properly "heated". load-on-startup doesn't solve that problem :( Thanks, rms -- + No matter how much you do, you never do enough -- unknown + Whatever you do will be insignificant, | but it is very important that you do it -- Ghandi + So let's do it...?
RE: servlet start-up
On Tue, Apr 10, 2001 at 05:13:05PM +1000, Warren Crossing wrote: the load-on-startup child element of servlet in web.xml is documented and specified in the j2ee servlet stuff things.. Well, tomcat tells me it loads the servlets, but they still are only loaded when I hit them, thus getting an Apache Internal Server Error untill tomcat has them all properly "heated". load-on-startup doesn't solve that problem :( It may be of importance to note that the load-on-startup param just instantiates the servlet(calls the init method of the servlet) and does not make any requests to any of the services(doPost, doGet, etc...). And also note that there is an instance created for each servlet mapping you have configured plus the default webapps/myapp/servlets/MyServlet. --- Michael Wentzel Software Developer Software As We Think - http://www.aswethink.com
