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[eclipselink-users] RE: Eclipselink in clustered
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Hi Shashi,
In a Java SE environment you can still use the RMI registry to register the RemoteCommandManager.
See
http://download.oracle.com/docs/cd/E17476_01/javase/1.5.0/docs/guide/jndi/jndi-rmi.html
Best regards,
Reinhard
-----Original Message-----
From: eclipselink-users-request@xxxxxxxxxxx [mailto:eclipselink-users-request@xxxxxxxxxxx]
Sent: 20 July 2010 20:11
To: eclipselink-users@xxxxxxxxxxx
Subject: eclipselink-users Digest, Vol 35, Issue 22
Send eclipselink-users mailing list submissions to
eclipselink-users@xxxxxxxxxxx
To subscribe or unsubscribe via the World Wide Web, visit
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When replying, please edit your Subject line so it is more specific
than "Re: Contents of eclipselink-users digest..."
Today's Topics:
1. Auto Reply: [eclipselink-users] RE: Eclipselink in clustered
environment. (neil.hauge@xxxxxxxxxx)
2. RE: RE: Eclipselink in clustered environment. (Shashikant Kale)
3. Re: Question on sequencing using TableGenerator (Andrei Ilitchev)
4. Auto Reply: Re: [eclipselink-users] Question on sequencing
using TableGenerator (gustavo.arango@xxxxxxxxxx)
5. Auto Reply: Re: [eclipselink-users] Question on sequencing
using TableGenerator (neil.hauge@xxxxxxxxxx)
6. RE: Question on sequencing using TableGenerator
(Reinhard Girstenbrei)
----------------------------------------------------------------------
Message: 1
Date: Tue, 20 Jul 2010 09:57:21 -0700 (PDT)
From: neil.hauge@xxxxxxxxxx
Subject: Auto Reply: [eclipselink-users] RE: Eclipselink in clustered
environment.
To: EclipseLink User Discussions <eclipselink-users@xxxxxxxxxxx>
Message-ID: <778018ba-ae98-49ff-8d04-a1c41eb765a4@default>
Content-Type: text/plain; charset=utf-8
I am out of the office with limited access to email from July 20th through the 26th. Please contact karen.moore or shaun.smith with any urgent Dali related issues. Please contact roger.striffler with any other urgent issues.
Thanks,
Neil
------------------------------
Message: 2
Date: Tue, 20 Jul 2010 22:35:47 +0530
From: Shashikant Kale <Shashikant.Kale@xxxxxxxxxxxxxxxx>
Subject: RE: [eclipselink-users] RE: Eclipselink in clustered
environment.
To: EclipseLink User Discussions <eclipselink-users@xxxxxxxxxxx>
Message-ID: <FDCD1F56CDE47840ADD853365BBE7FEF04C4B58343@indxchange03>
Content-Type: text/plain; charset="utf-8"
Thanks a lot Reinhard.
Appreciate your response. However, I understand I should have been more clear about the environment details in which I am using eclipselink.
We don't have any application server which can provide a JNDI service. However it's a standalone OSGi environment in which eclipselink is a bundle.
Would it still be possible to make it work?
Thanks again,
Shashi
-----Original Message-----
From: eclipselink-users-bounces@xxxxxxxxxxx [mailto:eclipselink-users-bounces@xxxxxxxxxxx] On Behalf Of Reinhard Girstenbrei
Sent: Tuesday, July 20, 2010 10:27
To: eclipselink-users@xxxxxxxxxxx
Subject: [eclipselink-users] RE: Eclipselink in clustered environment.
Hi Shashi,
I had been using the following code for the SessionCustomizer to configure RMI Cache Coordination on WebLogic Server:
public void customize(Session session) throws Exception {
Server server = (Server) session;
RemoteCommandManager commandMgr =
new RemoteCommandManager((CommandProcessor) server);
commandMgr.setUrl( System.getProperty("eclipselink.coordination.url"));
commandMgr.setChannel("EclipseLinkChannel");
commandMgr.setShouldPropagateAsynchronously(true);
commandMgr.getDiscoveryManager().setPacketTimeToLive(0);
RMITransportManager transportManager = new RMITransportManager(commandMgr);
transportManager.setNamingServiceType(TransportManager.JNDI_NAMING_SERVICE);
transportManager.setUserName("username");
transportManager.setEncryptedPassword("password");
transportManager.setInitialContextFactoryName( "weblogic.jndi.WLInitialContextFactory");
transportManager.setShouldRemoveConnectionOnError(true);
commandMgr.setTransportManager(transportManager);
server.setCommandManager(commandMgr);
server.setShouldPropagateChanges(true);
if(server.isConnected ()) {
server.getCommandManager().initialize();
}
else
{
server.login();
}
}
Using this code I can create a cluster of two WLS server instances running on the same machine.
I just have to setup the right URL for the JNDI lookup for this current CommandManager as a startup java option with
-Declipselink.coordination.url=t3://hostname:port/...
I hope that helps.
Best regards,
Reinhard Girstenbrei
-----Original Message-----
From: eclipselink-users-request@xxxxxxxxxxx [mailto:eclipselink-users-request@xxxxxxxxxxx]
Sent: 16 July 2010 18:00
To: eclipselink-users@xxxxxxxxxxx
Subject: eclipselink-users Digest, Vol 35, Issue 19
Send eclipselink-users mailing list submissions to
eclipselink-users@xxxxxxxxxxx
To subscribe or unsubscribe via the World Wide Web, visit
https://dev.eclipse.org/mailman/listinfo/eclipselink-users
or, via email, send a message with subject or body 'help' to
eclipselink-users-request@xxxxxxxxxxx
You can reach the person managing the list at
eclipselink-users-owner@xxxxxxxxxxx
When replying, please edit your Subject line so it is more specific
than "Re: Contents of eclipselink-users digest..."
Today's Topics:
1. Eclipselink in clustered environment. (Shashikant Kale)
----------------------------------------------------------------------
Message: 1
Date: Fri, 16 Jul 2010 10:58:28 +0530
From: Shashikant Kale <Shashikant.Kale@xxxxxxxxxxxxxxxx>
Subject: [eclipselink-users] Eclipselink in clustered environment.
To: EclipseLink User Discussions <eclipselink-users@xxxxxxxxxxx>
Message-ID: <FDCD1F56CDE47840ADD853365BBE7FEF04C4ACFF1E@indxchange03>
Content-Type: text/plain; charset="us-ascii"
Hello,
I am trying to setup eclipselink in clustered environment. We don't have JMS provider and hence would like to setup RMI based coordination for L2 cache. However I am finding it difficult to make it work. Looking at various examples and eclipselink cache coordination documentation at http://wiki.eclipse.org/Introduction_to_Cache_%28ELUG%29#Cache_Coordination_API wrote following code
in a SessionCustomizer
session.setProperty("eclipselink.cache.coordination.protocol", "rmi");
//Use default EclipseLinkCommandChannel for propagation
CommandManager cm = new RemoteCommandManager((CommandProcessor)session);
cm.setShouldPropagateAsynchronously(true);
DiscoveryManager dm = cm.getDiscoveryManager();
dm.setAnnouncementDelay(1000);
dm.setMulticastGroupAddress("224.0.0.1");
dm.setMulticastPort("2000");
dm.setPacketTimeToLive(2);
However this doesn't seem to be working. I am sure I am missing something here. Does somebody have a working example of cache coordination setup using RMI?
TIA,
Shashi
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Message: 3
Date: Tue, 20 Jul 2010 13:54:00 -0400
From: Andrei Ilitchev <andrei.ilitchev@xxxxxxxxxx>
Subject: Re: [eclipselink-users] Question on sequencing using
TableGenerator
To: EclipseLink User Discussions <eclipselink-users@xxxxxxxxxxx>
Message-ID: <4C45E2B8.9060507@xxxxxxxxxx>
Content-Type: text/plain; charset="iso-8859-1"
In table sequence case, update precedes select and both are executed in
the same transaction - so no dirty reads can happen.
On 20/07/2010 12:49 PM, Shashikant Kale wrote:
>
> Hi,
>
>
>
> We have been using eclipselink and I have a question wrt eclipselink
> in clustered environment. We are using TableGenerator for generating
> primary keys and we use the same sequence for all the entities.
>
>
>
> e.g.
>
>
>
> @GeneratedValue(strategy = GenerationType.TABLE, generator =
> "default")
>
> @TableGenerator(
>
> name = "default",
>
> table = "ID_GENERATOR",
>
> pkColumnName = "ID_NAME",
>
> valueColumnName = "ID_VALUE",
>
> pkColumnValue = "default",
>
> initialValue = 1,
>
> allocationSize = 50
>
> )
>
>
>
> However I have found that the Select query is fired without "For
> Update" clause. Wouldn't this cause issues due to dirty reads across
> multiple JVMs?
>
>
>
> Kindly let me know how this is taken care.
>
>
>
> Thanks,
>
> Shashi
>
> ------------------------------------------------------------------------
>
> _______________________________________________
> eclipselink-users mailing list
> eclipselink-users@xxxxxxxxxxx
> https://dev.eclipse.org/mailman/listinfo/eclipselink-users
>
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------------------------------
Message: 4
Date: Tue, 20 Jul 2010 10:55:41 -0700 (PDT)
From: gustavo.arango@xxxxxxxxxx
Subject: Auto Reply: Re: [eclipselink-users] Question on sequencing
using TableGenerator
To: EclipseLink User Discussions <eclipselink-users@xxxxxxxxxxx>
Message-ID: <4a1991fe-e226-475d-b0a0-b0fed420e0b7@default>
Content-Type: text/plain; charset=utf-8
i,
thanks for your email,
I'm currently off until the 23nd of august 2010.
For Any urgent issue , please contact my manager olivier.mikeladze@xxxxxxxxxx
thanks a lot.
regards,
Gustavo.
------------------------------
Message: 5
Date: Tue, 20 Jul 2010 10:55:44 -0700 (PDT)
From: neil.hauge@xxxxxxxxxx
Subject: Auto Reply: Re: [eclipselink-users] Question on sequencing
using TableGenerator
To: EclipseLink User Discussions <eclipselink-users@xxxxxxxxxxx>
Message-ID: <5bd4044b-ea6a-4c63-ad82-600ff3cd2a26@default>
Content-Type: text/plain; charset=utf-8
I am out of the office with limited access to email from July 20th through the 26th. Please contact karen.moore or shaun.smith with any urgent Dali related issues. Please contact roger.striffler with any other urgent issues.
Thanks,
Neil
------------------------------
Message: 6
Date: Tue, 20 Jul 2010 10:34:07 -0700 (PDT)
From: Reinhard Girstenbrei <reinhard.girstenbrei@xxxxxxxxxx>
Subject: [eclipselink-users] RE: Question on sequencing using
TableGenerator
To: eclipselink-users@xxxxxxxxxxx
Message-ID: <c5099fdc-9b77-4216-a84f-8800e1e89a09@default>
Content-Type: text/plain; charset=utf-8
Hi Shashi,
Incrementing the sequence value on the database must be performed in an autonomous transaction.
If you are using a native sequence, then obtaining and incrementing the next sequence value on the database is a non-transactional operation anyway.
If you are using a TableGenerator, then EclipseLink will perform a select on the sequence value, the update and the commit all together in an autonomous transaction.
It might be reasonable that you configure a distinct data source for sequencing as for sequencing you definitely do not need to use XA and therefore you can use a non-XA-datasource. You can define as a persistence unit property named "javax.persistence.nonJtaDataSource".
Best regards,
Reinhard
-----Original Message-----
From: eclipselink-users-request@xxxxxxxxxxx [mailto:eclipselink-users-request@xxxxxxxxxxx]
Sent: 20 July 2010 18:58
To: eclipselink-users@xxxxxxxxxxx
Subject: eclipselink-users Digest, Vol 35, Issue 21
Send eclipselink-users mailing list submissions to
eclipselink-users@xxxxxxxxxxx
To subscribe or unsubscribe via the World Wide Web, visit
https://dev.eclipse.org/mailman/listinfo/eclipselink-users
or, via email, send a message with subject or body 'help' to
eclipselink-users-request@xxxxxxxxxxx
You can reach the person managing the list at
eclipselink-users-owner@xxxxxxxxxxx
When replying, please edit your Subject line so it is more specific
than "Re: Contents of eclipselink-users digest..."
Today's Topics:
1. Question on sequencing using TableGenerator (Shashikant Kale)
2. Auto Reply: [eclipselink-users] Question on sequencing using
TableGenerator (gustavo.arango@xxxxxxxxxx)
3. Auto Reply: [eclipselink-users] Question on sequencing using
TableGenerator (neil.hauge@xxxxxxxxxx)
4. Auto Reply: Auto Reply: [eclipselink-users] Question on
sequencing using TableGenerator (gustavo.arango@xxxxxxxxxx)
5. Auto Reply: Auto Reply: [eclipselink-users] Question on
sequencing using TableGenerator (gustavo.arango@xxxxxxxxxx)
6. Auto Reply: Auto Reply: [eclipselink-users] Question on
sequencing using TableGenerator (neil.hauge@xxxxxxxxxx)
7. RE: Eclipselink in clustered environment. (Reinhard Girstenbrei)
8. Auto Reply: [eclipselink-users] RE: Eclipselink in clustered
environment. (gustavo.arango@xxxxxxxxxx)
----------------------------------------------------------------------
Message: 1
Date: Tue, 20 Jul 2010 22:19:11 +0530
From: Shashikant Kale <Shashikant.Kale@xxxxxxxxxxxxxxxx>
Subject: [eclipselink-users] Question on sequencing using
TableGenerator
To: EclipseLink User Discussions <eclipselink-users@xxxxxxxxxxx>
Message-ID: <FDCD1F56CDE47840ADD853365BBE7FEF04C4B58337@indxchange03>
Content-Type: text/plain; charset="us-ascii"
Hi,
We have been using eclipselink and I have a question wrt eclipselink in clustered environment. We are using TableGenerator for generating primary keys and we use the same sequence for all the entities.
e.g.
@GeneratedValue(strategy = GenerationType.TABLE, generator = "default")
@TableGenerator(
name = "default",
table = "ID_GENERATOR",
pkColumnName = "ID_NAME",
valueColumnName = "ID_VALUE",
pkColumnValue = "default",
initialValue = 1,
allocationSize = 50
)
However I have found that the Select query is fired without "For Update" clause. Wouldn't this cause issues due to dirty reads across multiple JVMs?
Kindly let me know how this is taken care.
Thanks,
Shashi
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------------------------------
Message: 2
Date: Tue, 20 Jul 2010 09:49:38 -0700 (PDT)
From: gustavo.arango@xxxxxxxxxx
Subject: Auto Reply: [eclipselink-users] Question on sequencing using
TableGenerator
To: EclipseLink User Discussions <eclipselink-users@xxxxxxxxxxx>
Message-ID: <794a63e0-0f8a-405f-948e-aa53ce6d215a@default>
Content-Type: text/plain; charset=utf-8
i,
thanks for your email,
I'm currently off until the 23nd of august 2010.
For Any urgent issue , please contact my manager olivier.mikeladze@xxxxxxxxxx
thanks a lot.
regards,
Gustavo.
------------------------------
Message: 3
Date: Tue, 20 Jul 2010 09:49:39 -0700 (PDT)
From: neil.hauge@xxxxxxxxxx
Subject: Auto Reply: [eclipselink-users] Question on sequencing using
TableGenerator
To: EclipseLink User Discussions <eclipselink-users@xxxxxxxxxxx>
Message-ID: <983bcb0e-6b83-4b21-b85e-7f3063396a21@default>
Content-Type: text/plain; charset=utf-8
I am out of the office with limited access to email from July 20th through the 26th. Please contact karen.moore or shaun.smith with any urgent Dali related issues. Please contact roger.striffler with any other urgent issues.
Thanks,
Neil
------------------------------
Message: 4
Date: Tue, 20 Jul 2010 09:51:48 -0700 (PDT)
From: gustavo.arango@xxxxxxxxxx
Subject: Auto Reply: Auto Reply: [eclipselink-users] Question on
sequencing using TableGenerator
To: EclipseLink User Discussions <eclipselink-users@xxxxxxxxxxx>
Message-ID: <b49f8c41-462d-46e0-bb5d-a271e5670cbf@default>
Content-Type: text/plain; charset=utf-8
i,
thanks for your email,
I'm currently off until the 23nd of august 2010.
For Any urgent issue , please contact my manager olivier.mikeladze@xxxxxxxxxx
thanks a lot.
regards,
Gustavo.
------------------------------
Message: 5
Date: Tue, 20 Jul 2010 09:51:54 -0700 (PDT)
From: gustavo.arango@xxxxxxxxxx
Subject: Auto Reply: Auto Reply: [eclipselink-users] Question on
sequencing using TableGenerator
To: EclipseLink User Discussions <eclipselink-users@xxxxxxxxxxx>
Message-ID: <039ed737-acdc-4945-81cc-67de59d54e30@default>
Content-Type: text/plain; charset=utf-8
i,
thanks for your email,
I'm currently off until the 23nd of august 2010.
For Any urgent issue , please contact my manager olivier.mikeladze@xxxxxxxxxx
thanks a lot.
regards,
Gustavo.
------------------------------
Message: 6
Date: Tue, 20 Jul 2010 09:51:47 -0700 (PDT)
From: neil.hauge@xxxxxxxxxx
Subject: Auto Reply: Auto Reply: [eclipselink-users] Question on
sequencing using TableGenerator
To: EclipseLink User Discussions <eclipselink-users@xxxxxxxxxxx>
Message-ID: <56335a74-264c-4f7d-8d83-2c6934c793af@default>
Content-Type: text/plain; charset=utf-8
I am out of the office with limited access to email from July 20th through the 26th. Please contact karen.moore or shaun.smith with any urgent Dali related issues. Please contact roger.striffler with any other urgent issues.
Thanks,
Neil
------------------------------
Message: 7
Date: Tue, 20 Jul 2010 09:57:02 -0700 (PDT)
From: Reinhard Girstenbrei <reinhard.girstenbrei@xxxxxxxxxx>
Subject: [eclipselink-users] RE: Eclipselink in clustered environment.
To: eclipselink-users@xxxxxxxxxxx
Message-ID: <2ca4ab2f-6d72-4174-b5f7-ae8e86fdd846@default>
Content-Type: text/plain; charset=utf-8
Hi Shashi,
I had been using the following code for the SessionCustomizer to configure RMI Cache Coordination on WebLogic Server:
public void customize(Session session) throws Exception {
Server server = (Server) session;
RemoteCommandManager commandMgr =
new RemoteCommandManager((CommandProcessor) server);
commandMgr.setUrl( System.getProperty("eclipselink.coordination.url"));
commandMgr.setChannel("EclipseLinkChannel");
commandMgr.setShouldPropagateAsynchronously(true);
commandMgr.getDiscoveryManager().setPacketTimeToLive(0);
RMITransportManager transportManager = new RMITransportManager(commandMgr);
transportManager.setNamingServiceType(TransportManager.JNDI_NAMING_SERVICE);
transportManager.setUserName("username");
transportManager.setEncryptedPassword("password");
transportManager.setInitialContextFactoryName( "weblogic.jndi.WLInitialContextFactory");
transportManager.setShouldRemoveConnectionOnError(true);
commandMgr.setTransportManager(transportManager);
server.setCommandManager(commandMgr);
server.setShouldPropagateChanges(true);
if(server.isConnected ()) {
server.getCommandManager().initialize();
}
else
{
server.login();
}
}
Using this code I can create a cluster of two WLS server instances running on the same machine.
I just have to setup the right URL for the JNDI lookup for this current CommandManager as a startup java option with
-Declipselink.coordination.url=t3://hostname:port/...
I hope that helps.
Best regards,
Reinhard Girstenbrei
-----Original Message-----
From: eclipselink-users-request@xxxxxxxxxxx [mailto:eclipselink-users-request@xxxxxxxxxxx]
Sent: 16 July 2010 18:00
To: eclipselink-users@xxxxxxxxxxx
Subject: eclipselink-users Digest, Vol 35, Issue 19
Send eclipselink-users mailing list submissions to
eclipselink-users@xxxxxxxxxxx
To subscribe or unsubscribe via the World Wide Web, visit
https://dev.eclipse.org/mailman/listinfo/eclipselink-users
or, via email, send a message with subject or body 'help' to
eclipselink-users-request@xxxxxxxxxxx
You can reach the person managing the list at
eclipselink-users-owner@xxxxxxxxxxx
When replying, please edit your Subject line so it is more specific
than "Re: Contents of eclipselink-users digest..."
Today's Topics:
1. Eclipselink in clustered environment. (Shashikant Kale)
----------------------------------------------------------------------
Message: 1
Date: Fri, 16 Jul 2010 10:58:28 +0530
From: Shashikant Kale <Shashikant.Kale@xxxxxxxxxxxxxxxx>
Subject: [eclipselink-users] Eclipselink in clustered environment.
To: EclipseLink User Discussions <eclipselink-users@xxxxxxxxxxx>
Message-ID: <FDCD1F56CDE47840ADD853365BBE7FEF04C4ACFF1E@indxchange03>
Content-Type: text/plain; charset="us-ascii"
Hello,
I am trying to setup eclipselink in clustered environment. We don't have JMS provider and hence would like to setup RMI based coordination for L2 cache. However I am finding it difficult to make it work. Looking at various examples and eclipselink cache coordination documentation at http://wiki.eclipse.org/Introduction_to_Cache_%28ELUG%29#Cache_Coordination_API wrote following code
in a SessionCustomizer
session.setProperty("eclipselink.cache.coordination.protocol", "rmi");
//Use default EclipseLinkCommandChannel for propagation
CommandManager cm = new RemoteCommandManager((CommandProcessor)session);
cm.setShouldPropagateAsynchronously(true);
DiscoveryManager dm = cm.getDiscoveryManager();
dm.setAnnouncementDelay(1000);
dm.setMulticastGroupAddress("224.0.0.1");
dm.setMulticastPort("2000");
dm.setPacketTimeToLive(2);
However this doesn't seem to be working. I am sure I am missing something here. Does somebody have a working example of cache coordination setup using RMI?
TIA,
Shashi
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https://dev.eclipse.org/mailman/listinfo/eclipselink-users
End of eclipselink-users Digest, Vol 35, Issue 19
*************************************************
------------------------------
Message: 8
Date: Tue, 20 Jul 2010 09:57:20 -0700 (PDT)
From: gustavo.arango@xxxxxxxxxx
Subject: Auto Reply: [eclipselink-users] RE: Eclipselink in clustered
environment.
To: EclipseLink User Discussions <eclipselink-users@xxxxxxxxxxx>
Message-ID: <305e5894-de4b-4fe6-94e9-e0ed4a50c8f7@default>
Content-Type: text/plain; charset=utf-8
i,
thanks for your email,
I'm currently off until the 23nd of august 2010.
For Any urgent issue , please contact my manager olivier.mikeladze@xxxxxxxxxx
thanks a lot.
regards,
Gustavo.
------------------------------
_______________________________________________
eclipselink-users mailing list
eclipselink-users@xxxxxxxxxxx
https://dev.eclipse.org/mailman/listinfo/eclipselink-users
End of eclipselink-users Digest, Vol 35, Issue 21
*************************************************
------------------------------
_______________________________________________
eclipselink-users mailing list
eclipselink-users@xxxxxxxxxxx
https://dev.eclipse.org/mailman/listinfo/eclipselink-users
End of eclipselink-users Digest, Vol 35, Issue 22
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