Orion freezing, Deadlocking, optimistic locking etc.
Hi
I am a great fan of OrionServer generally find it an excellent application
server.
However, lately I have become aware of a fairly serious problem with
OrionServer that I do not know how to solve and may force me to use another
application server. The problem is deadlocking. I am further surprised as to
how little this problem is actually discussed on the mailing lists. Consider
the following code. (Only the important parts are shown.)
I have two identical CMP Entity Beans A and B:
public class ABean implements EntityBean {
*
Some Entity Bean methods and properties not shown.
*
public int value;
public B b;
public int getValue() {
return this.value;
}
public void setValue(int value) {
this.value = value;
}
public void setB(B b) {
this.b = b;
}
public int getBValue(int i) {
try {
try {
Thread.sleep(20);
} catch (Exception ex) {
}
return b.getValue();
} catch (com.evermind.server.DeadlockException de) {
System.out.println(Catching deadlock exception in A and
rolling back!
Iteration=+i);
throw new EJBException(de);
} catch (Exception ex) {
System.out.println(Catching and throwing other exceptions in
A!);
throw new EJBException(ex);
}
}
}
Bean B is just the reverse of A, i.e. it has a reference on A and has a
method getAValue(int i).
All bean methods have transaction property set to Required. Also,
max-tx-retries=60.
Then I have the following client application C:
. Some initialization code and then the following loop:
for (int i=0; itimes; i++) {
try {
av = b.getAValue(i);
bv = a.getBValue(i);
System.out.println(it=+i);
} catch (Exception ex) {
ex.printStackTrace();
}
}
If I run more than one instance of C then OrionServer has the following
behavior:
- if exclusive-write-access=false then one instance of C runs for a while.
After a couple of iterations both instances of C report
com.evermind.server.DeadLockException. After that the entire application
(including OrionServer) just hangs. This Orion freeze-up is not a database
deadlock either.
- if exclusive-write-access=true then OrionServer instance (not the
clients) reports deadlock exceptions in both instances of A and B. After
that Orion freezes up again.
I got this behavior with 1.5.3 but also for all other versions as far a I
can remember since 1.3.8.
Based on this I have made the following conclusions:
1OrionServer does not support optimistic caching at all. This is a critical
limitation since you are guaranteed to get deadlock exceptions and Orion
does not provide any way deal with this situation. Retrying just gives
another DeadlockException. Anyway, according to Sun the container is
supposed to deal with deadlocks.
2There is a serious bug in the implementation of locks on objects. If Orion
freezes up with just two bean instances this just can't be good.
Often the advice given by people to avoid deadlocks is that you should
design your code to avoid deadlocks. In any serious program this is not
really practical. If you have an application with 50 beans, 10 methods each,
you have to design 500 methods so that any combination of 2 of the five
hundred methods will not cause a deadlock, i.e. you have to check for
approximately 125000 combinations of methods to make sure you do not get a
deadlock. Shouldn't the EJB framework have made development more efficient?
I have read somewhere that optimistic caching avoids deadlocks. With
deadlocks in Orion Exceptions are thrown in both threads. With optimistic
caching however, the first thread that modifies an object will always go
through. The other threads get something like a
ConcurrentModificationException. Optimistic caching seems to be more useful
in this aspect.
Am I missing something or is OrionServer still not ready for serious
deployments?
Please help!
Hans Barnard
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RE: Job Scheduler pattern
Hi again, sorry if I'm overly persistent, I promise I will drop this issue v. soon ;) Thanks for that link Scott, I couldn't get on to it, I can't get past the login. The LAST question I'd like to ask is, with the client-module tag in orion-ejb-jar.xml, is there a provision for controlling the lifetime of the application? esp restarting if it stops running/falls over? Much appreciated, Justin -Original Message- From: Scott Farquhar [mailto:[EMAIL PROTECTED]] Sent: 29 January 2002 05:45 To: Orion-Interest Subject: Re: Job Scheduler pattern There is an interesting article on DevX regarding timer tasks. http://www.devx.com/premier/mgznarch/Javapro/2002/02feb02/eb0202/eb0202-2.as p It looks like it does what you want. Cheers, Scott Scott Farquhar [EMAIL PROTECTED] Atlassian :: www.atlassian.com Supporting YOUR world Geoff Soutter wrote: Hmm, want us to write it for you? But seriously, there are commercial apps for J2EE scheduling if that's the kind of thing you are after, just use google... Geoff -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of Justin Crosbie Sent: Saturday, January 26, 2002 2:49 AM To: Orion-Interest Subject: RE: Job Scheduler pattern Yes I have seen that, it is very bare-bones. It doesn't even use the Timer classes. I need to know how to make this robust. Thanks, Justin -Original Message- From: Joseph B. Ottinger [mailto:[EMAIL PROTECTED]] Sent: 25 January 2002 12:04 To: Orion-Interest Subject: Re: Job Scheduler pattern The www.orionsupport.com site has a sample scheduler that can easily be converted to do something like this. On Fri, 25 Jan 2002, Justin Crosbie wrote: Hi, I'm not sure if I've asked this before, or if I should be asking on a general EJB list. I'd like to implement a job scheduler in J2EE. This would shcedule the execution of EJB methods at a specified time in the future. It would have to be persistent, and jobsd would be rescheduled upon appserver restart. Is it as simple as using the Timer and TimerTask in java.util to implement an app that is started with the client-module tag? Does it matter as far as Orion goes whether I use a java.util.Timer as a daemon or not? What can I do if the app, or the Timer object dies at any stage? I've had problems where after some time something goes wrong I get a strange Remote Exception, and the only solution is to restart the VM. What might cause this? Any opinions on this? How do I make this solution robust is what I am asking. Thanks for any help, Justin --- Joseph B. Ottinger [EMAIL PROTECTED] http://adjacency.org/ IT Consultant
AW: Orion+Linux under heavy load
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 hi, they changed a lot of the threading/vm stuff with the release of kernel 2.4. i don't remember exactly the kernel-version for redhat 6.2 but i'm sure it is a 2.2 at maximum. but i would also be interested in a comparision linux - freebsd. jdk 1.3 is now officially supported under freebsd too. someone's got any numbers here? jan - -- Jan Heise / Tel. +49-163-4803237 / [EMAIL PROTECTED] - -Ursprüngliche Nachricht- Von: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]Im Auftrag von josete Gesendet: Donnerstag, 7. Februar 2002 20:58 An: Orion-Interest Betreff: Re: Orion+Linux under heavy load Wich problem do you say they've fixed? threads under linux? i've done some tests with a redhat 6.2.(sorry i can't remember exactly the kernel version) and jboss, and only at start time it was about three times slower than the same jboss in a windows 2000. If with the new kernel versions it runs more efficiently, it would be great because i'm a linux fan that has been forced to use windows by this problem... XD - - Original Message - From: Jorge Jimenez C [EMAIL PROTECTED] To: Orion-Interest [EMAIL PROTECTED] Sent: Thursday, February 07, 2002 3:29 PM Subject: Re: Orion+Linux under heavy load Don't worry. That problem is already fixed in the latest linux kernel releases. I don't remember exactly release number but you can easily find it. I've made some tests with JBoss and it runs very well. JJ - Original Message - From: Peter Peltonen [EMAIL PROTECTED] To: Orion-Interest [EMAIL PROTECTED] Sent: Thursday, February 07, 2002 7:57 AM Subject: Orion+Linux under heavy load When browsing through JBoss's documentation I found this remark: http://www.jboss.org/online-manual/HTML/ch11s02.html --snip-- Be aware however that JBoss performance is very dependant on the underlying configuration. For example, informal tests show that on the same PC box, it can run twice as fast under Windows 2000 / Sun JVM than under Linux 2.2 / Sun JVM. Linux users probably already know that linux does not support real threads. Under heavy load, JBoss will for example crash with 200 concurrent users under linux, whereas it can handle 1000 of them on the same box with Windows 2000. Of course, if you use Apache or Jetty in front of JBoss to handle the thread pooling, this will not be a problem. --/snip-- How about Orion, has anyone compared Win2k and Linux regarding speed? The last paragraph is really alarming -- is it really so that Linux is not a wise choice as a production platform? Is this why UNIX is so popular in production environments? Or is JBoss just coded poorly? How many users (sessions) can Orion handle, is there a difference in Win2k / Linux / UNIX performance? Cheers, Peter -BEGIN PGP SIGNATURE- Version: PGP 7.0.4 iQA/AwUBPGO5/p/YNqVvLvLkEQKEygCeLV4BM3MvOU9o+ol5jD+KggTfgpIAnRcz 0Z5oI7RviYShM7VBKZoCeTbM =UlCt -END PGP SIGNATURE-
Help
I decided to day to give a first try at Orion (1.5.3). I started trying to deploy an application that already runs fine under Tomcat / Borland AppServer. I have a .ear for this application I configured server.xml, data-sources.xml and default-web-site.xml server.xml : application name=oasis path=../applications/OASIS.ear auto-start=true / default-web-site.xml : web-app application=oasis name=oasisWeb root=/oasisWeb / Here is my application.xml ?xml version=1.0 encoding=UTF-8? !DOCTYPE application PUBLIC -//Sun Microsystems, Inc.//DTD J2EE Application 1.2//EN http://java.sun.com/j2ee/dtds/application_1_2.dtd; application display-nameOASIS Application/display-name module ejbOasisBaseEJBs.jar/ejb /module module ejbOasisPartyEJBs.jar/ejb /module module web web-urioasisWeb.war/web-uri context-root/oasisWeb/context-root /web /module /application In the web.xml in oasisWeb.war I only have servlet mappings and tld definitions. When I start Orion, the application deploys just fine but if I try to invoke any jsp I get an internal error (500). http:/localhost/oasisWeb/Welcome.jsp If I change Welcome.jsp to Welcome.html, it displays correctly. If I invoke a servlet, it is properly invoked but whenever I try to servlet.getServletContext().getRequestDispatcher(res.encodeURL(url)) For a url that is a jsp I get a null result. Any idea? Thanks __ François Beauregard Pyxis Technologies Vice-président, recherche et développement Tel: (450) 681-9094 Fax: (450) 681-5758 [EMAIL PROTECTED]
Re: Orion+Linux under heavy load
José: I-ve found another mail about the subject. Sorry for the rest because this one is in spanish. --- Tengo tambien esto Notese que se hace la comparacion con Linux 2.2(Sun JVM La maquina virtual de sun _es_ lenta. Otra cosa a tomar en cuenta es que se hizo un cambio bastante fuerte en el kernel de linux a partir de la version 2.4.7 si no mal recuerdo. El cambio fue en el manejo de la memoria virtual (VMM) Sobre la version, hay que aclarar algunas cosas (yo me enteré no hace mucho) Hay una version estable del kernel que es liderada por Linus Torvalds, es la que se baja de www.kernel.org. Por otra parte hay parches al kernel que estan disponibles pero no han pasado a la rama de Linus porque él no los ha aprobado. Las distribuciones (RedHat, SuSE, etc) vienen con un kernel distinto a la rama oficial, ellos incorporan los parches que estimen convenientes. Por ejemplo RH7.2 viene con kernel 2.4.7, con soporte de EXT3 y con el antiguo VMM, mientras que el oficial (Linus) version 2.4.7 no tiene soporte para ext3, pero si cuenta con la nueva VMM. Con el asunto de la VMM se produjo una gran discusion y Alan Cox (Kernerl Guru de RedHat) creo su propia rama en donde incorporaba muchos mas parches del kernel, pero con la VMM clasica. En mi estacion de trabajo con la distribucion original + las aplicaciones que tenia andando le costaba andar, de repente se notaba harto swap. Despues con las actualizaciones de algunas librerias, y el cambio del kernel al oficial 2.4.17 funcionaba muchisimo mejor todo, en el mismo equipos... despues me subieron a 256MB en RAM y ya no se nota tanto la diferencia. Esto de la nueva VMM es mas o menos reciente (unos 3 o 4 meses atras) -- Franco Catrin L. [EMAIL PROTECTED] http://www2.netexplora.cl/ancelot http://defx.sourceforge.net ICQ#:30449379 - Original Message - From: josete [EMAIL PROTECTED] To: Orion-Interest [EMAIL PROTECTED] Sent: Thursday, February 07, 2002 4:58 PM Subject: Re: Orion+Linux under heavy load Wich problem do you say they've fixed? threads under linux? i've done some tests with a redhat 6.2.(sorry i can't remember exactly the kernel version) and jboss, and only at start time it was about three times slower than the same jboss in a windows 2000. If with the new kernel versions it runs more efficiently, it would be great because i'm a linux fan that has been forced to use windows by this problem... XD - Original Message - From: Jorge Jimenez C [EMAIL PROTECTED] To: Orion-Interest [EMAIL PROTECTED] Sent: Thursday, February 07, 2002 3:29 PM Subject: Re: Orion+Linux under heavy load Don't worry. That problem is already fixed in the latest linux kernel releases. I don't remember exactly release number but you can easily find it. I've made some tests with JBoss and it runs very well. JJ - Original Message - From: Peter Peltonen [EMAIL PROTECTED] To: Orion-Interest [EMAIL PROTECTED] Sent: Thursday, February 07, 2002 7:57 AM Subject: Orion+Linux under heavy load When browsing through JBoss's documentation I found this remark: http://www.jboss.org/online-manual/HTML/ch11s02.html --snip-- Be aware however that JBoss performance is very dependant on the underlying configuration. For example, informal tests show that on the same PC box, it can run twice as fast under Windows 2000 / Sun JVM than under Linux 2.2 / Sun JVM. Linux users probably already know that linux does not support real threads. Under heavy load, JBoss will for example crash with 200 concurrent users under linux, whereas it can handle 1000 of them on the same box with Windows 2000. Of course, if you use Apache or Jetty in front of JBoss to handle the thread pooling, this will not be a problem. --/snip-- How about Orion, has anyone compared Win2k and Linux regarding speed? The last paragraph is really alarming -- is it really so that Linux is not a wise choice as a production platform? Is this why UNIX is so popular in production environments? Or is JBoss just coded poorly? How many users (sessions) can Orion handle, is there a difference in Win2k / Linux / UNIX performance? Cheers, Peter
SOAP Admin Tool
Can anyone point me to a resource to find information regarding the Apache SOAP admin tool? The documentation that comes with Apache SOAP is not very detailed with respect to the admin tool. John [EMAIL PROTECTED]
Re(2): Application client log in
Hi,
Thanks for this interesting code, but when i try it , i can't make a lookup
on the RoleManager :
javax.naming.NameNotFoundException: java:comp/RoleManager not found
Is there something special to parameter in the app server ?
Thanks for your anwser.
You use the rolemanager to do the login ... SECURITY_PRINCIPAL and
credentials can be the orion admin account.
Hashtable env = new Hashtable();
env.put(dedicated.connection,true);
env.put(java.naming.factory.initial,com.evermind.server.ApplicationClien
tInitialContextFactory);
env.put(java.naming.provider.url,ormi://myhost/myapp);
env.put(javax.naming.Context.SECURITY_PRINCIPAL,
someuserwithrmiprivilages);// NOT the user you want to log in
env.put(javax.naming.Context.SECURITY_CREDENTIALS,somepassword);
InitialContext initialcontext = new InitialContext(env);
RoleManager rolemanager =
(RoleManager)initialcontext.lookup(java:comp/RoleManager);
try
{
roleManager.login(username, password);
}
catch(Exception exception)
{
throw new SecurityException(exception.getMessage());
}
There is a lot of discussion about this in the archives and e.g. on the
Elephantwalkers site, as well as orionsupport and I think Atlassian.
-Original Message-
From: Randahl Fink Isaksen [mailto:[EMAIL PROTECTED]]
Sent: Thursday, February 07, 2002 8:22 AM
To: Orion-Interest
Subject: Application client log in
We are currently implementing a Java Swing client, and I am wondering how
to write the log in system. When not using http or form based log in
(HTML)
and when you wish to let the client log in from a GUI interface (Swing),
which part of Orion is then used to hand over the username and password
for
authorization?
Randahl
Start Shutdown OC4J ...
Hi every body ...
--
Right Now i've got a problem while i'm trying to shutdown one Orion
instance, i explain the problem:
I have installed orionserver in one linux box suse 7.0 with the kernel
2.2.16, so when i want to
start the orion server, i perform the next command :
nohup java -jar ${OC4J_HOME}/orion.jar -config
${OC4J_CONFIG}/server.xml -verbosity ${V} -err ${LOG}/out.log
The problem begins, when i try to shutdown the server.. i shutdown the
server but nothing happens the server is already started, to do that i
perform the next command :
java -jar ${OC4J_HOME}/admin.jar ormi://${HOST} ${USERNAME}
${PASSWORD} -shutdown
I think that the command is correct, but i don't know what's happening with
that, somebody know what's that??, it's a bug or something like that... oh
i'm performing wrong operations ...
--
Thank's in adavance ...
Compiling JSP
Hi, I´m working with JBuilder6 and Orion. I have a need to use JSP in my project, but a didn´t come success in compile any JSP. My project includes all jars in ROOT-PATH/oc4j/j2ee/home. When I compile all project this fails and I Receive the following message from JBuilder6 compiler: Jsp1.jsp: Error #: 300 : method handlePageException(java.lang.Throwable) not found in class javax.servlet.jsp.PageContext My Jsp source is generated from the JBuilder JSP Wizard. Does someone know how can I proceed? And what about debbuging, is possible debug a JSP using JBuilder and Orion? Carlos Roberto da Silva Júnior Engenheiro de Software Ramal - 4631 Qualiti Software Processes - CESAR Soluções para o processo de construção de software http://www.qualiti.com.br +55 81 3272.4700
Re: Orion+Linux under heavy load
Would you happen to have more specific info about the reliability issue? Is there any differences between JBoss and Orion? How about running these beasts on UNIX? Is Windows still the fastest optino we have? Cheers, Peter On Thu, Feb 07, 2002 at 11:29:32AM -0300, Jorge Jimenez C wrote: Don't worry. That problem is already fixed in the latest linux kernel releases. I don't remember exactly release number but you can easily find it. I've made some tests with JBoss and it runs very well. JJ - Original Message - From: Peter Peltonen [EMAIL PROTECTED] To: Orion-Interest [EMAIL PROTECTED] Sent: Thursday, February 07, 2002 7:57 AM Subject: Orion+Linux under heavy load When browsing through JBoss's documentation I found this remark: http://www.jboss.org/online-manual/HTML/ch11s02.html --snip-- Be aware however that JBoss performance is very dependant on the underlying configuration. For example, informal tests show that on the same PC box, it can run twice as fast under Windows 2000 / Sun JVM than under Linux 2.2 / Sun JVM. Linux users probably already know that linux does not support real threads. Under heavy load, JBoss will for example crash with 200 concurrent users under linux, whereas it can handle 1000 of them on the same box with Windows 2000. Of course, if you use Apache or Jetty in front of JBoss to handle the thread pooling, this will not be a problem. --/snip-- How about Orion, has anyone compared Win2k and Linux regarding speed? The last paragraph is really alarming -- is it really so that Linux is not a wise choice as a production platform? Is this why UNIX is so popular in production environments? Or is JBoss just coded poorly? How many users (sessions) can Orion handle, is there a difference in Win2k / Linux / UNIX performance? Cheers, Peter
Re: Help
how your web.xml file looks like François Beauregard wrote: I decided to day to give a first try at Orion (1.5.3). I started trying to deploy an application that already runs fine under Tomcat / Borland AppServer. I have a .ear for this application I configured server.xml, data-sources.xml and default-web-site.xml server.xml : application name=oasis path=../applications/OASIS.ear auto-start=true / default-web-site.xml : web-app application=oasis name=oasisWeb root=/oasisWeb / Here is my application.xml ?xml version=1.0 encoding=UTF-8? !DOCTYPE application PUBLIC -//Sun Microsystems, Inc.//DTD J2EE Application 1.2//EN http://java.sun.com/j2ee/dtds/application_1_2.dtd; application display-nameOASIS Application/display-name module ejbOasisBaseEJBs.jar/ejb /module module ejbOasisPartyEJBs.jar/ejb /module module web web-urioasisWeb.war/web-uri context-root/oasisWeb/context-root /web /module /application In the web.xml in oasisWeb.war I only have servlet mappings and tld definitions. When I start Orion, the application deploys just fine but if I try to invoke any jsp I get an internal error (500). http:/localhost/oasisWeb/Welcome.jsp If I change Welcome.jsp to Welcome.html, it displays correctly. If I invoke a servlet, it is properly invoked but whenever I try to servlet.getServletContext().getRequestDispatcher(res.encodeURL(url)) For a url that is a jsp I get a null result. Any idea? Thanks __ François Beauregard Pyxis Technologies Vice-président, recherche et développement Tel: (450) 681-9094 Fax: (450) 681-5758 [EMAIL PROTECTED]
Re: Help
Hi François Beauregard, Configuration for server.xml, data-sources.xml and default-web-site.xml looks fine. Do your servlets located in the ..\oasis\oasisWeb\WEB-INF\classes directory? And one more note: jsp file is compiled file html not so when you run jsp file Orion compiles it. Result of the compiling you can see in the ...\application-deployments\oasis directory. Igor. ___ Igor Chirokov [EMAIL PROTECTED] - Original Message - From: François Beauregard [EMAIL PROTECTED] To: Orion-Interest [EMAIL PROTECTED] Sent: Friday, February 08, 2002 5:16 AM Subject: Help I decided to day to give a first try at Orion (1.5.3). I started trying to deploy an application that already runs fine under Tomcat / Borland AppServer. I have a .ear for this application I configured server.xml, data-sources.xml and default-web-site.xml server.xml : application name=oasis path=../applications/OASIS.ear auto-start=true / default-web-site.xml : web-app application=oasis name=oasisWeb root=/oasisWeb / Here is my application.xml ?xml version=1.0 encoding=UTF-8? !DOCTYPE application PUBLIC -//Sun Microsystems, Inc.//DTD J2EE Application 1.2//EN http://java.sun.com/j2ee/dtds/application_1_2.dtd; application display-nameOASIS Application/display-name module ejbOasisBaseEJBs.jar/ejb /module module ejbOasisPartyEJBs.jar/ejb /module module web web-urioasisWeb.war/web-uri context-root/oasisWeb/context-root /web /module /application In the web.xml in oasisWeb.war I only have servlet mappings and tld definitions. When I start Orion, the application deploys just fine but if I try to invoke any jsp I get an internal error (500). http:/localhost/oasisWeb/Welcome.jsp If I change Welcome.jsp to Welcome.html, it displays correctly. If I invoke a servlet, it is properly invoked but whenever I try to servlet.getServletContext().getRequestDispatcher(res.encodeURL(url)) For a url that is a jsp I get a null result. Any idea? Thanks __ François Beauregard Pyxis Technologies Vice-président, recherche et développement Tel: (450) 681-9094 Fax: (450) 681-5758 [EMAIL PROTECTED]
Problems with Kobrix's TICL Orion
Hellu, Is there anybody who experienced problems configuring Kobrix's TICL (Tag Interface Component Library) for Orion/OC4J ? I followed everything in the examples' Readme, but still i get xxceptions when trying to deploy the examples :( Thnx in advance, -MS\ P.S. http://www.kobrix.com/ticl/ticlmain.jsp
RE: Orion+Linux under heavy load
Hi All, I have lot of work to do, so of course I had to procrastinate and translate this! If it's wrong, then jota can blame himself for posting in a foreign language. Maybe it will help someone. Joanne Translation - I had this problem, too. Note that the comparison is made with Linux 2.2 (Sun JVM The sun virtual machine _is_ slow. Another thing to keep in mind is that there was a big change in the linux kernel since version 2.4.7, if I remember correctly. The change was in virtual memory management (VMM) In regards to the version, it's necessary to clear up a few things (I found out [about this] recently) There is a stable verison of the kernel that is headed by Linus Torvalds, it is the one that can be downloaded from www.kernel.org. On the other hand, there are patches to the kernel that are available but which have not been added to the Linus's branch because he has not approved them. The distributions (RedHat, SuSE, etc) come with a kernel that is different than that on the official branch, they incorporate the patches that they think are worthwhile. Por example, RH7.2 comes with kernel 2.4.7, with support for EXT3 and con the old VMM, while the official (Linus) version 2.4.7 does not have support for ext3, but _does_ have the new VMM. The issue of the VMM resulted in a big argument and Alan Cox (Redhat's Kernel Guru) made his own branch in which he incorporated many more kernel patches, but which still had the classic VMM. At my work station with the original distribution + the applications that I was running, it was running under strain, suddenly you could see a lot of swapping. Aferwards, after updating some libraries and changing the kernel to the official 2.4.17 everything worked a lot better, on the same equiptment. . . afterwords they upgraded me to 256 MB of RAM and now the difference isn't as noticeable. This thing about the new VMM is more or less recent ( 3 or 4 months ago) -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] Sent: Friday, February 08, 2002 9:44 AM To: Orion-Interest Subject: Re: Orion+Linux under heavy load José: I-ve found another mail about the subject. Sorry for the rest because this one is in spanish. --- Tengo tambien esto Notese que se hace la comparacion con Linux 2.2(Sun JVM La maquina virtual de sun _es_ lenta. Otra cosa a tomar en cuenta es que se hizo un cambio bastante fuerte en el kernel de linux a partir de la version 2.4.7 si no mal recuerdo. El cambio fue en el manejo de la memoria virtual (VMM) Sobre la version, hay que aclarar algunas cosas (yo me enteré no hace mucho) Hay una version estable del kernel que es liderada por Linus Torvalds, es la que se baja de www.kernel.org. Por otra parte hay parches al kernel que estan disponibles pero no han pasado a la rama de Linus porque él no los ha aprobado. Las distribuciones (RedHat, SuSE, etc) vienen con un kernel distinto a la rama oficial, ellos incorporan los parches que estimen convenientes. Por ejemplo RH7.2 viene con kernel 2.4.7, con soporte de EXT3 y con el antiguo VMM, mientras que el oficial (Linus) version 2.4.7 no tiene soporte para ext3, pero si cuenta con la nueva VMM. Con el asunto de la VMM se produjo una gran discusion y Alan Cox (Kernerl Guru de RedHat) creo su propia rama en donde incorporaba muchos mas parches del kernel, pero con la VMM clasica. En mi estacion de trabajo con la distribucion original + las aplicaciones que tenia andando le costaba andar, de repente se notaba harto swap. Despues con las actualizaciones de algunas librerias, y el cambio del kernel al oficial 2.4.17 funcionaba muchisimo mejor todo, en el mismo equipos... despues me subieron a 256MB en RAM y ya no se nota tanto la diferencia. Esto de la nueva VMM es mas o menos reciente (unos 3 o 4 meses atras) -- Franco Catrin L. [EMAIL PROTECTED] http://www2.netexplora.cl/ancelot http://defx.sourceforge.net ICQ#:30449379 - Original Message - From: josete [EMAIL PROTECTED] To: Orion-Interest [EMAIL PROTECTED] Sent: Thursday, February 07, 2002 4:58 PM Subject: Re: Orion+Linux under heavy load Wich problem do you say they've fixed? threads under linux? i've done some tests with a redhat 6.2.(sorry i can't remember exactly the kernel version) and jboss, and only at start time it was about three times slower than the same jboss in a windows 2000. If with the new kernel versions it runs more efficiently, it would be great because i'm a linux fan that has been forced to use windows by this problem... XD - Original Message - From: Jorge Jimenez C [EMAIL PROTECTED] To: Orion-Interest [EMAIL PROTECTED] Sent: Thursday, February 07, 2002 3:29 PM Subject: Re: Orion+Linux under heavy load Don't worry. That problem is already fixed in the latest linux kernel releases. I don't remember exactly release number but you can easily find it. I've made some tests with JBoss and it runs very well. JJ - Original
RE: Re(2): Application client log in
You are probably missing application-client.xml, and
orion-application-client.xml; they have to be in a META-INF directory
relative to the source root of your client. You should be able to find the
apropriate tags in the orion docs and on the sites referenced before.
In my own situation, I call RoleManager from an ejb which acts as a facade
for my own security interface to make it independent from the underlying
appserver (I like using Orion, but many potential clients require that it
runs on the appserver of their choice ...) - so my xml files reference my
Bean and not the RoleManager, which is called by my Orion-specific
bean-Implementation.
--peter
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
Sent: Friday, February 08, 2002 7:17 AM
To: Orion-Interest
Subject: Re(2): Application client log in
Hi,
Thanks for this interesting code, but when i try it , i can't make a lookup
on the RoleManager :
javax.naming.NameNotFoundException: java:comp/RoleManager not found
Is there something special to parameter in the app server ?
Thanks for your anwser.
You use the rolemanager to do the login ... SECURITY_PRINCIPAL and
credentials can be the orion admin account.
Hashtable env = new Hashtable();
env.put(dedicated.connection,true);
env.put(java.naming.factory.initial,com.evermind.server.ApplicationClien
tInitialContextFactory);
env.put(java.naming.provider.url,ormi://myhost/myapp);
env.put(javax.naming.Context.SECURITY_PRINCIPAL,
someuserwithrmiprivilages);// NOT the user you want to log in
env.put(javax.naming.Context.SECURITY_CREDENTIALS,somepassword);
InitialContext initialcontext = new InitialContext(env);
RoleManager rolemanager =
(RoleManager)initialcontext.lookup(java:comp/RoleManager);
try
{
roleManager.login(username, password);
}
catch(Exception exception)
{
throw new SecurityException(exception.getMessage());
}
There is a lot of discussion about this in the archives and e.g. on the
Elephantwalkers site, as well as orionsupport and I think Atlassian.
-Original Message-
From: Randahl Fink Isaksen [mailto:[EMAIL PROTECTED]]
Sent: Thursday, February 07, 2002 8:22 AM
To: Orion-Interest
Subject: Application client log in
We are currently implementing a Java Swing client, and I am wondering how
to write the log in system. When not using http or form based log in
(HTML)
and when you wish to let the client log in from a GUI interface (Swing),
which part of Orion is then used to hand over the username and password
for
authorization?
Randahl
Re: Compiling JSP
You probably have a JSP 1.1 compatible jar rather than a JSP 1.2 compatible one in your classpath. In the 1.1 spec they forgot to handle Throwable in the PageContext (only Exception was handled) so it was added in the latest release. /Fredrik Lindgren Carlos Roberto da Silva Junior wrote: Hi, I´m working with JBuilder6 and Orion. I have a need to use JSP in my project, but a didn´t come success in compile any JSP. My project includes all jars in ROOT-PATH/oc4j/j2ee/home. When I compile all project this fails and I Receive the following message from JBuilder6 compiler: Jsp1.jsp: Error #: 300 : method handlePageException(java.lang.Throwable) not found in class javax.servlet.jsp.PageContext My Jsp source is generated from the JBuilder JSP Wizard. Does someone know how can I proceed? And what about debbuging, is possible debug a JSP using JBuilder and Orion? Carlos Roberto da Silva Júnior Engenheiro de Software Ramal - 4631 Qualiti Software Processes - CESAR Soluções para o processo de construção de software http://www.qualiti.com.br +55 81 3272.4700
Re: Help
Hi, If for some reason the JSP will not compile, you will get null when trying to get a RequestDispatcher to it. What stacktrace do you get when you access it directly (the internal server error 500)? A tip to see what's happening is to add development=true to the orion-web.xml deployment descriptor to get readable java code for the accessed JSPs (stored in the deployment directory) /Fredrik Lindgren François Beauregard wrote: I decided to day to give a first try at Orion (1.5.3). I started trying to deploy an application that already runs fine under Tomcat / Borland AppServer. I have a .ear for this application I configured server.xml, data-sources.xml and default-web-site.xml server.xml : application name=oasis path=../applications/OASIS.ear auto-start=true / default-web-site.xml : web-app application=oasis name=oasisWeb root=/oasisWeb / Here is my application.xml ?xml version=1.0 encoding=UTF-8? !DOCTYPE application PUBLIC -//Sun Microsystems, Inc.//DTD J2EE Application 1.2//EN http://java.sun.com/j2ee/dtds/application_1_2.dtd; application display-nameOASIS Application/display-name module ejbOasisBaseEJBs.jar/ejb /module module ejbOasisPartyEJBs.jar/ejb /module module web web-urioasisWeb.war/web-uri context-root/oasisWeb/context-root /web /module /application In the web.xml in oasisWeb.war I only have servlet mappings and tld definitions. When I start Orion, the application deploys just fine but if I try to invoke any jsp I get an internal error (500). http:/localhost/oasisWeb/Welcome.jsp If I change Welcome.jsp to Welcome.html, it displays correctly. If I invoke a servlet, it is properly invoked but whenever I try to servlet.getServletContext().getRequestDispatcher(res.encodeURL(url)) For a url that is a jsp I get a null result. Any idea? Thanks __ François Beauregard Pyxis Technologies Vice-président, recherche et développement Tel: (450) 681-9094 Fax: (450) 681-5758 [EMAIL PROTECTED]
orion + php
I am getting the following error, 500 Internal Server Error Couldnt find/launch the interpreter, searched for php My configuration file has the following, servlet servlet-namephp/servlet-name servlet- classcom.evermind.server.http.CGIServlet/serv init-param param-nameinterpreter/param-name param-valuephp/param-value /init-param /servlet I have php working with Apache no problem (mod_php4 port for fbsd). Is there something obvious that I'm just missing? Thanks, Justen Stepka
Problem with starting the server
When i start the server with this command java -Dhttp.Cluster.debug=true -Dcluster.debug=true -jar orion.jar The server output is A nonfatal internal JIT (3.10.107(x)) error 'Relocation error: NULL relocation target' has occurred in : 'org/apache/crimson/parser/Parser2.maybeComment (Z)Z': Interpreting method. Please report this error in detail to http://java.sun.com/cgi-bin/bugreport.cgi Warning: Error reading transaction-log file (/F:/orion/persistence/transaction.s tate) for recovery: premature end of file Forced or abrubt (crash etc) server shutdown detected, starting recovery process ... Recovery completed, 0 connections committed and 0 rolled back... Orion/1.5.2 initialized i am not able to understand why this o/p is coming can anybody give me the solution . sachin __ Do You Yahoo!? Send FREE Valentine eCards with Yahoo! Greetings! http://greetings.yahoo.com
