Confusion over the memory of a bunch of Java and WLS_FORMS

Hi all

Background first:

Oracle Forms/Reports 11.1.2 64-bit
WebLogic Server 10.3.6
JDK 1.6 update 37 64-bit
Microsoft Windows 2008 R2
Using nodemanager to start/stop the servers managed

After reading all the documentation and searched this forum and the Internet for advice, I'm still totally confused about how best to make use of memory on the server (the server I'm working now on a 8 GB). Two trains of thought that I discovered in my research:

(1) do not change the size of Javaheap at all (stick with the default values) and just create additional managed servers on the same machine.

(2) increase the size of the heap Java for WLS_FORMS

That said, here are my questions:

(A) what is the best practice approach (#1 or #2)?

(B) if it is the #2, what is the approved way to increase the heap size? I tried to add - Xms and arguments - Xmx to the WLS server begin arguments in the WLS console. They are applied when the managed server is started (confirmed in the log file), but because of the way WLS_FORMS is started, there are more - Xms and arguments - Xmx applied after mine, and peaks of Java one last mention if there are duplicates.

1st update: Question #2 seems to be answered by the support notes 1260074.1 (the only place I had not yet looked at)

Thanks for any idea that you can provide. If there is a document that I missed somewhere, I'm happy to be told where it is, and will read and summarize the results here.

Kind regards

John

John,

I'll try to comment on each of your own:

(1) we had been make some type errors "Unable to contact forms Apache Server" (users see the error "Failed to bridge APACHE server"). The logs showed nothing interesting. I increased the memory allocated using setDomainEnv.cmd, and the error seems to have disappeared. Yes, I know it's a shotgun approach, try something without really having a reason to do it, but it seems to have helped Edit: now I have review of OHS logs instead of WLS_FORMS newspapers, I found the log messages, which brings me to Doc 1380762.1, who tells me that I need a patch. DOH. Oh crikey, forms 11.1.2.1 is out and it came out shortly after that we have downloaded 11.1.2.0 to create these environments. Good and the bad new kind of thing...

The Apache Bridge error is relatively in line toward the front if you understand what it is say you. It is an error generated by mod_wl_ohs which is the property of SST (Apache). This module is responsible for the relationship between OSH and WLS. The Apache bridge error means that OSH (mod_wls) has been unable to get a response from the managed server WLS he called. Basically, he was unable to cross the bridge ;) The cause could be anything from the managed server does work not, management server is busiest, or there is a problem of network configuration and the server simply didn t hear appeal of OSH.

It is all described in Note 1304095.1 MOS

Regarding 11.1.2.1, this can be installed fresh or as a patch on 11.1.2.0. So for machines which currently installed, you can go directly to 11.1.2.1 without having to first install 11.1.2.0.


.

(2) as tony.g suggested, we are looking for what we should do to solve them "I have n servers with x GB of RAM, what should I do to configure out-of-the-box forms for stability" issue.

As I said, there is really no 'forms' specific settings associated with how much RAM your machine has. The only exception to this is (although a little indirect) to use the grouping of the JVM. JVM pooling can reduce the size of each execution process memory footprint by moving his calls from java to the pool of the jvm, then common queries of sharing with the other running execution environments. Memory, use of OSH or WLS managed server really has nothing to do directly with the forms. Specifically to the managed server, from a perspective of forms, I would not expect the cost of memory of WLS_FORMS spending a large part due to the workload. I'm expecting increase as the simultaneous load increases, but I would not expect it to be significant. If I had to guess, see an increase of 1 m or less per user wouldn't surprise me (that's just a guess - I don't know what would be the expected values). If we were to use our older scalability guidelines (Oracle), usually we would have suggested that you should consider about 100 sessions by 1 FMV for better performance. Given that v11 uses a newer version of java and scalability is better today, I suspect that you can easily spend a couple of hundred (300 for example) or more before the performance decreases. In addition, the need to add more managed servers would be probably necessary.

This is discussed in Note 989118.1 MOS


.

(3) HA is important to us, so we set up a cluster of servers of forms/States with a BLT in front of her. I read in the literature on the management of clusters, cloning of a managed server and with the support, how to increase the memory heap for the WLS_FORMS server. My thought process was 'If Oracle gives me instructions on how to increase the heap memory and how clone managed servers, there must be a scenario in which do have advantage." I'm trying to understand the scenarios in which we would do either of these activities.

Refer to the note that I mentioned above. As a general rule, if you limit the number of simultaneous sessions less than about 300-400, I think the default settings should be fine. If you think you want to go beyond 300 or 400 per managed server, then probably you need to increase the heap the managed server max. Yet once again, refer to the note that I mentioned earlier.

See also Note 1260074.1 MOS


.

I am aware of the JVM pooling (Yes yell us reports) - I still have to this implementation, but it is on my to-do list.

This is discussed in the [url http://docs.oracle.com/cd/E38115_01/doc.111210/e24477/jvm.htm]Forms Deployment Guide

Hope that helps ;)

.

Tags: Oracle Development

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