Comments on: WebLogic Clustering with Unicast http://ghattus.com/2009/06/04/weblogic-clustering-with-unicast/ A blog about technology that I work on in my day to day job Mon, 20 Sep 2010 23:28:16 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: sghattu http://ghattus.com/2009/06/04/weblogic-clustering-with-unicast/comment-page-1/#comment-240 sghattu Thu, 06 May 2010 12:23:44 +0000 http://ghattus.com/2009/06/weblogic-clustering-with-unicast/#comment-240 Sumanth, I believe there is no tool to monitor unicast messages. But I do believe there is a debug flag that you can enable which prints debug messages in your log indicating if unicast is working or not. Also, make sure you set OutboundEnabled to true if you are using a custom channel. Sumanth,
I believe there is no tool to monitor unicast messages. But I do believe there is a debug flag that you can enable which prints debug messages in your log indicating if unicast is working or not.
Also, make sure you set OutboundEnabled to true if you are using a custom channel.

]]> By: Sumanth http://ghattus.com/2009/06/04/weblogic-clustering-with-unicast/comment-page-1/#comment-231 Sumanth Wed, 07 Apr 2010 05:52:14 +0000 http://ghattus.com/2009/06/weblogic-clustering-with-unicast/#comment-231 Hi Satya, Previously we can monitor multicast messages when we use multicast messaging to the cluster. Now we are using Unicast messaging mode, So how can monitor or view unicast messages. Please reply to this comment satya. Cheers, Sumanth. Hi Satya,

Previously we can monitor multicast messages when we use multicast messaging to the cluster. Now we are using Unicast messaging mode, So how can monitor or view unicast messages. Please reply to this comment satya.

Cheers,
Sumanth.

]]> By: sbellef http://ghattus.com/2009/06/04/weblogic-clustering-with-unicast/comment-page-1/#comment-98 sbellef Wed, 16 Dec 2009 19:01:51 +0000 http://ghattus.com/2009/06/weblogic-clustering-with-unicast/#comment-98 May I ask why you are saying "It is recommended to use a custom broadcast channel..."? Any technical reason for that? Cheers, May I ask why you are saying “It is recommended to use a custom broadcast channel…”? Any technical reason for that?

Cheers,

]]> By: Dick Cai http://ghattus.com/2009/06/04/weblogic-clustering-with-unicast/comment-page-1/#comment-76 Dick Cai Fri, 04 Dec 2009 17:21:20 +0000 http://ghattus.com/2009/06/weblogic-clustering-with-unicast/#comment-76 Yes, setOutboundEnabled(true) is very important. By default, WL console doesn't check this checkbox. You have to make sure you check it at Channel creation time. Otherwise, you need go to "Advanced" area to check it. We have 4 managed servers in one cluster. But we had complain about session replication issue. I noticed 2 servers have "Frequently" drop out, and 2 have "Occasional" drop out. Looking at groups for cluster, I saw one MS has 4 servers in its group, two MS have 3 servers in the group, and one MS only has 2 servers. We are going to raise cluster debugging level to check the reason. However, what we observed if we use Default channel, it works better. So, we are not sure yet if there is a problem with customized channel for Unicast. Yes, setOutboundEnabled(true) is very important. By default, WL console doesn’t check this checkbox. You have to make sure you check it at Channel creation time. Otherwise, you need go to “Advanced” area to check it.
We have 4 managed servers in one cluster. But we had complain about session replication issue. I noticed 2 servers have “Frequently” drop out, and 2 have “Occasional” drop out. Looking at groups for cluster, I saw one MS has 4 servers in its group, two MS have 3 servers in the group, and one MS only has 2 servers. We are going to raise cluster debugging level to check the reason. However, what we observed if we use Default channel, it works better. So, we are not sure yet if there is a problem with customized channel for Unicast.

]]> By: EdP. http://ghattus.com/2009/06/04/weblogic-clustering-with-unicast/comment-page-1/#comment-75 EdP. Mon, 29 Jun 2009 12:47:12 +0000 http://ghattus.com/2009/06/weblogic-clustering-with-unicast/#comment-75 Hi Satya,<br /><br />Is there a place to find any specifics on how to setup a Unicast channel and when or if you need to .<br />From this example it is unclear to me how that is set up. I am familiar with what is needed for a multicast IP. WLS doc has not been too helpful for this , nor has WLS support.<br /><br />Thanks<br />EdP. Hi Satya,

Is there a place to find any specifics on how to setup a Unicast channel and when or if you need to .
From this example it is unclear to me how that is set up. I am familiar with what is needed for a multicast IP. WLS doc has not been too helpful for this , nor has WLS support.

Thanks
EdP.

]]> By: sreebodapati http://ghattus.com/2009/06/04/weblogic-clustering-with-unicast/comment-page-1/#comment-74 sreebodapati Thu, 25 Jun 2009 12:24:10 +0000 http://ghattus.com/2009/06/weblogic-clustering-with-unicast/#comment-74 One additional piece to ensure is that the session replication and load balancing does not break when using unicast in a secure weblogic environment. For that set the secure replication enabled to true on the cluster MBean. I feel oracle should fix this so the server would automatically enable secure replication when using a secure default protocol.<br /><br />see the post at my blog <a href="http://sreebodapati.wordpress.com/2009/06/15/unicast-in-a-secure-weblogic-server-cluster/" rel="nofollow"> TechVibe</a> One additional piece to ensure is that the session replication and load balancing does not break when using unicast in a secure weblogic environment. For that set the secure replication enabled to true on the cluster MBean. I feel oracle should fix this so the server would automatically enable secure replication when using a secure default protocol.

see the post at my blog TechVibe

]]> By: Satya Ghattu's Blog http://ghattus.com/2009/06/04/weblogic-clustering-with-unicast/comment-page-1/#comment-73 Satya Ghattu's Blog Tue, 16 Jun 2009 10:45:39 +0000 http://ghattus.com/2009/06/weblogic-clustering-with-unicast/#comment-73 Chandra,<br />No, I don't have one, but if I come across one I will post it here.<br />You can use the default channel that uses the regular managed server port for cluster communication. But it is recommended that you have a different network channel for cluster communications. Chandra,
No, I don't have one, but if I come across one I will post it here.
You can use the default channel that uses the regular managed server port for cluster communication. But it is recommended that you have a different network channel for cluster communications.

]]> By: Chandra http://ghattus.com/2009/06/04/weblogic-clustering-with-unicast/comment-page-1/#comment-72 Chandra Tue, 16 Jun 2009 10:00:23 +0000 http://ghattus.com/2009/06/weblogic-clustering-with-unicast/#comment-72 Hi Satya,<br />Is there an offline equivalent to this script, especially for the part that creates network accesspoints?<br /><br />Do we need two channel ports if we have 2 managed servers?<br /><br />Thanks,<br />Chandra Hi Satya,
Is there an offline equivalent to this script, especially for the part that creates network accesspoints?

Do we need two channel ports if we have 2 managed servers?

Thanks,
Chandra

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