[JBoss-user] [EJB/JBoss] - Re: possible memory leak in long lived transaction ?
Actually I am using MS Sql server and the DB is on another server. "Grzegorz Głowaty" wrote : Here your problem is different. Probably it is caused by use of Hypersonic db as beans storage which (as you probably know) is normally configured to be in-memory db (so everything is stored in the memory). Try to switch to postgres or mysql and see if the problem persists. | | My problem is completelly different. http://www.jboss.org/index.html?module=bb&op=viewtopic&p=3827547#3827547";>View the original post http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=3827547>Reply to the post --- This SF.Net email is sponsored by: IBM Linux Tutorials Free Linux tutorial presented by Daniel Robbins, President and CEO of GenToo technologies. Learn everything from fundamentals to system administration.http://ads.osdn.com/?ad_id=1470&alloc_id=3638&op=click ___ JBoss-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/jboss-user
[JBoss-user] [Persistence & CMP/JBoss] - Re: Entity Bean Explosion?
Ok If this is what Jboss does, I will feel comfort using it in my project. Thanks a lot! "loubyansky" wrote : > I think the instance will be returned to pool. But where is the context of the instance? | | It is thrown away. | | > Question is, where the app server gets the context for the bean? | | Just creates a new instance. http://www.jboss.org/index.html?module=bb&op=viewtopic&p=3826815#3826815";>View the original post http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=3826815>Reply to the post --- This SF.Net email is sponsored by: IBM Linux Tutorials Free Linux tutorial presented by Daniel Robbins, President and CEO of GenToo technologies. Learn everything from fundamentals to system administration.http://ads.osdn.com/?ad_id=1470&alloc_id=3638&op=click ___ JBoss-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/jboss-user
[JBoss-user] [EJB/JBoss] - Re: possible memory leak in long lived transaction ?
Hi, All. I think, the problem is caused not only by long transaction. Anything that lives long may cause problem since they occupy resources. For example, long-lived session beans & eneity beans will do even they are not involved in transactions. Take my project as an example, there will be handerds of thousand entity beans, which will NEVER be removed once created. that is, every entity bean will live for ever. There will be one entity bean handling transactions. Each transaction is short. And I also encountered the "out of memory" problem. What I am going to say it that, EJB model is not suitable for those projects, which are database centric, because that will make app server demand storage resources as much as DB server, something is a mirror. http://www.jboss.org/index.html?module=bb&op=viewtopic&p=3826814#3826814";>View the original post http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=3826814>Reply to the post --- This SF.Net email is sponsored by: IBM Linux Tutorials Free Linux tutorial presented by Daniel Robbins, President and CEO of GenToo technologies. Learn everything from fundamentals to system administration.http://ads.osdn.com/?ad_id=1470&alloc_id=3638&op=click ___ JBoss-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/jboss-user
[JBoss-user] [Persistence & CMP/JBoss] - Entity Bean Explosion?
The project I am handling has the following features: 1. Quite a lot(hundreds of thousand) entity beans will be created 2. And they will NEVER be removed The project is to enhance a legacy project which used JDBC directly to persist data. I also understand that EJB will be passivated and be put into the pool so that App Server will not be out of memory. The question is that, even if an EJB is passivated, will it still occupy some resources on App Server? If yes, what kind of resource is occupied? If there are several million EJBs created and then passivated, will they exhaust resources of App Server since they will never be removed? In the legacy system, this is not the problem. Because it used JDBC, all data only exists in DB, not App Server. I am going to enhance it using EJB. But due to the above considerations, I am hesitating whether to use it or not since it may require a huge amount resource to be added to App Server. (BTW, I am using JBOSS as App Server) Any suggestions? http://www.jboss.org/index.html?module=bb&op=viewtopic&p=3826067#3826067";>View the original post http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=3826067>Reply to the post --- This SF.Net email is sponsored by: IBM Linux Tutorials Free Linux tutorial presented by Daniel Robbins, President and CEO of GenToo technologies. Learn everything from fundamentals to system administration.http://ads.osdn.com/?ad_id=1470&alloc_id=3638&op=click ___ JBoss-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/jboss-user
[JBoss-user] [EJB/JBoss] - Entity Bean Explosion?
The project I am handling has the following features: 1. Quite a lot(hundreds of thousand) entity beans will be created 2. And they will NEVER be removed The project is to enhance a legacy project which used JDBC directly to persist data. I also understand that EJB will be passivated and be put into the pool so that App Server will not be out of memory. The question is that, even if an EJB is passivated, will it still occupy some resources on App Server? If yes, what kind of resource is occupied? If there are several million EJBs created and then passivated, will they exhaust resources of App Server since they will never be removed? In the legacy system, this is not the problem. Because it used JDBC, all data only exists in DB, not App Server. I am going to enhance it using EJB. But due to the above considerations, I am hesitating whether to use it or not since it may require a huge amount resource to be added to App Server. (BTW, I am using JBOSS as App Server) Any suggestions? http://www.jboss.org/index.html?module=bb&op=viewtopic&p=3826066#3826066";>View the original post http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=3826066>Reply to the post --- This SF.Net email is sponsored by: IBM Linux Tutorials Free Linux tutorial presented by Daniel Robbins, President and CEO of GenToo technologies. Learn everything from fundamentals to system administration.http://ads.osdn.com/?ad_id=1470&alloc_id=3638&op=click ___ JBoss-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/jboss-user
[JBoss-user] [O'Reilly JBoss 3.0 Workbook] - "CustomerEJB has no local home interface" (Ex12_1)
View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=3820273#3820273 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=3820273 I tried to deploy titan.jar for ex12_1 and I encountered the exception: "CustomerEJB has no local home interface" . I read through the forum and found that other people also encountered the same problem for other exercises. Actually CustomerEJB does not have any local home interface nor local interface. Nothing about local (home) interface is described in ejb-jar.xml, too. Why will jboss try to find a local home interface for it? One thing in common for all those exercises with this deployment problem is that, EJB with only remote interface tries to access EJB with only local interface. I suspect this is the cause of the problem. So I remove the AddressEJB which has only local interface (of course, CustomerEJB will change some code) and redeploy again. This time no error!!! Then I tried to use session bean to access entity beans which has only local interface, there is also no problem. So the conclusion I made is that, in a jar, if both entity beans with only remote interface and entity beans with only local interface are used together, jboss will have problems in deploying this jar. Any other suggestion? --- The SF.Net email is sponsored by EclipseCon 2004 Premiere Conference on Open Tools Development and Integration See the breadth of Eclipse activity. February 3-5 in Anaheim, CA. http://www.eclipsecon.org/osdn ___ JBoss-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/jboss-user
