Forms/Reports 11.1.2 Load balancing on Linux

Hi, I put this on the Reports forum but didn't get a reply, it has a Forms element to it, so I thought I would post it here as well.
I have three different applications which will run on a single Clustered Weblogic Environment with two Nodes.
So we will have 10.3.5 Weblogic Server, and Forms and Reports 11.1.2.
With respect to the Reports, we have three separate applications so it seem logical to separate out the reporting to three separate report servers, but as we have two nodes in a cluster I guess that we will need three servers on each node.
Is there any documentation on this approach and also on load balancing between the servers?
Two systems invoke the report servers from Forms using the run_report_object, the other runs from the linux command line (ie rwrun). How does the load balancing work in this situation with the calls from the Forms?
I have searched through the Oracle Reports documentation and I couldn't find much that clearly addresses these issues.
Any help gratefully received.
Tony

Any thoughts?

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Testing Forms Services availability with Hardware Load Balancer

I have posted a question about load balancing to a group of application services running Forms Services here on the Forms forum but have had no reply:
Forms Services availability checking for BIGIP Load Balancer
My basic questions are:
a) What do people recommend for load balancing Forms ... least connection, round robin ... ?
b) Do people use http://server:port/forms/frmservlet?ifcmd=status or have some of you used something else?
My reason for the question is we had a Forms Services failure that was not detected by the ifcmd servlet as the HTTP side of things was still working. This meant that the BIGIP load balancer sent everything to the failed server as it had the least connections. So basically no-one could logon.
I've raised an SR with Oracle but they recommend the standard URL above. Has anyone else had a problem like this and if so were you able to fix it?
Regards,
Philippe

Well SR followed up and it looks like the only course of action is to use the standard HTTP check: http://server:port/forms/frmservlet?ifcmd=status ...
... unless that is you want to do some serious customisation. Oracle don't support any other form of checking.
I'm guessing from the lack of responses to this thread that this hasn't been an issue for anybody else ... ???
Any thoughts/suggestions really welcome as we go into production in 4 weeks.
a) What do people recommend for load balancing Forms ... least connection, round robin ... ?
b) Do people use http://server:port/forms/frmservlet?ifcmd=status or have some of you used something else?
Thanks,
Philippe

Oracle report server 10g with load balancer.

Hi All,
We are in very big trouble, Please help us out. Issue is
we have install oracle 10gApplication server along with Report Server stand alone, Application server and report server are working fine but when we put reports into physical load balaner its showing unable to connect report server, I try to dignose with help of some he writes me on command can you people clear me what this mean.
[oracle@rep bin]$ ./rwdiag.sh -findall
Broadcast mechanism used to locate servers
Channel address = 228.5.6.7
Channel port = 14021
(1) Name = rep_cbs_lhr : Type = server : Host = rep.mcb.com.pk
(2) Name = rep_rep_oracleas1 : Type = server : Host = rep.mcb.com.pk
(3) Name = rep_eoc12_oracleas1 : Type = server : Host = eoc12.mcb.com.pk
(4) Name = rep_lahore : Type = server : Host = eoc1.mcb.com.pk
(5) Name = rep_as1_as1 : Type = server : Host = as1.mcb.com.pk
(6) Name = lhr_rep : Type = server : Host = eoc1.mcb.com.pk
[oracle@rep bin]$
Regards

hi,
./rwdiag.sh -findall
rwdiag is a utility used to find all the Reports Servers on the network.
./rwdiag.sh -find <report server-name>
and it monitors packets broadcasted on the network by the particular Reports Server.
THis link might help you,details about rwdiag.sh
http://download.oracle.com/docs/cd/B14099_19/bi.1012/b14048/pbr_rwdiag.htm
Regards
Fabian

Load Balancing Forms Services with an effective healthcheck

I am in the process of configuring two forms 11.1.2 servers running with weblogic 10.3.5 with multiple forms applications clustered across both physical servers. We are looking to load balance to the various forms applications using a hardware load balancer. Can anyone comment on their experience with setting up effective application healthchecks using either hardware or software load balancers?
For example say that we have 3 applications clustered across 2 servers with the following
URLs:
http://server01:7777/forms/frmservlet?config=myapp1
http://server01:7777/forms/frmservlet?config=myapp2
http://server01:7777/forms/frmservlet?config=myapp3
http://server02:7777/forms/frmservlet?config=myapp1
http://server02:7777/forms/frmservlet?config=myapp2
http://server02:7777/forms/frmservlet?config=myapp3
We would need a checking mechanism on the load balancer that could tell if myapp2 was down on say server01 and therefore block traffic to that application yet keep traffic open for the other 2 apps on the same server.
A specific difficulty with forms is that when the database behind the application is down forms services will return an error message within a displayed error form. From the load balancer's point of view the forms services are "up". We need to find a way of detecting that the application is actually available and not just that the forms services themselves are available. To detect that the forms services are available we might normally use the status check:
http://server01:7777/forms/frmservlet?ifcmd=status
however this will only tell use the availability of the forms services on a physical server and not whether any actual applications are available.
I am aware that f5 do a BIGIP offering that includes some Oracle Forms specific components. Can anyone comment on how they have setup Oracle Forms healthchecks using various load balancing methods. In particular if a load balancer is limited to using WGET commands to check HTTP returned content is there a way of checking a forms application's availability and if not how have other people achieved an effective healthcheck?
Many thanks,
Philippe

Did you ever Get this to work?
I am having some problems trying to load balance with Oracle Forms, Discover and reports Oracle Application Server Release 10g (9.0.4.0.2) and I was wondering if you could help. Has any one ever got this to work consistently? We are an ERP product written mostly in forms (904) and are trying to implement are largest customer there performance issue so we need the load balancing to work. Will also accept other recommendation as cost effective as solutions.
Site 1:
A: SERVER
     Host as1.xyzco.local
     Version 10.1.2.0.2
     Installation Type Identity Management and Metadata Repository
     Oracle Home E:\oracle\inf_1012
     Farm as1db.xyzco.net
o     HTTP_Server
o     Internet Directory
o     OC4J_SECURITY
o     Single Sign-On:orasso
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B SERVER
     Host as2. xyzco.local
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     Installation Type Business Intelligence and Forms
     Oracle Home E:\oracle\mid_904
     Farm as2db. xyzco.net
o     Discoverer
o     Forms
o     home
o     HTTP_Server
o     OC4J_BI_Forms
o     Reports Server
o     Web Cache
o     Management
C SERVER
     Host as3. xyzco.local
     Version 9.0.4.0.2
     Installation Type Business Intelligence and Forms Discoverer and Reports
     Oracle Home E:\oracle\mid_904
     Farm as2db. xyzco.net
o      Discoverer
o     Forms
o     home
o     HTTP_Server
o     OC4J_BI_Forms
o     Reports Server
o     Web Cache
o     Management
All servers Are:
     Windows 2003 Standard Server with current service packs
     Xeon Dual Processor with 4GB ram
     Raid 0 drives 2 for OS and 2 for Oracle
Daniel Brody
[email protected]

Load Balancing Crystal Reports 10

Is load balancing Crystal Reports 10 supported? I have heard that it isn't and wanted to either confirm or un-confirm that statement.
If Load Balancing is supported what are the scenarios that would be supported?
Thanks.

CR 10 is out of support and not enough info.
Why would you want to load balance Crystal Reports? Only one user can open the Report Designer to edit a report. Or have you figured out how to have more than one person using one computer at the same time? If so then refer to the licensing PDF file, each user must have his own copy of Crystal Reports installed or a keycode per user.
So No, Crystal Reports does not support load balancing.
But of course my answer is only answering what you asked.... which is likely not what you mean.
Please see the Rules of Engagement on how to submit a question.
Thank you
Don

Forms Services availability checking for BIGIP Load Balancer

We are load balancing across a number of 10.1.2.2 Forms servers using a BIGIP load balancer. Currently our load balancing is done based on which server has the "least connections" to the BIGIP. So far we have been using the following test URL to allow BIGIP to check the availability of the Forms Services on each server.
http://server:port/forms/frmservlet?ifcmd=status
This works well however it only checks through to the HTTP level within Forms Services. We encountered a problem when the Forms Services failed to work on a particular server however the above URL showed that everything was OK. The effect of this was that all new users attempting to login were directed to the failed server as this server had the "least number of connections".
After raising an SR with Oracle they advised that the forking of runtime processes had probably failed and this was not detectable by the load balancer with the above URL. So they have recommended a number of options for checking the status of the Forms Services. These are:
a) http://server:port/forms/frmservlet
This loads the default Form and therefore by definition tests the forking of runtime processes. However BIGIP is unable to automatically process the information to distinguish whether the service is up or down. Oracle recommended that if using this method we would need to customise BIGIP to handle the various FRM-xxxx error codes.
b) http://server:port/forms/frmservlet?userid=scott/tiger@YOURDB&form=yourtestform.
fmx
Even more thorough would be to actual log on to the database using a test form as above.
My question is does anyone out there have experience in checking Forms Services availability using these last two methods as I'm not sure how to customize the load balancer so that it can handle the output of these URLs. Also when using the original URL is it normal to load balance using a "least connections" method or do people out there use a different algorithm.
Thanks for any help/advise that you can give.
Regards,
Philippe

Well SR followed up and it looks like the only course of action is to use the standard HTTP check: http://server:port/forms/frmservlet?ifcmd=status ...
... unless that is you want to do some serious customisation. Oracle don't support any other form of checking.
I'm guessing from the lack of responses to this thread that this hasn't been an issue for anybody else ... ???
Any thoughts/suggestions really welcome as we go into production in 4 weeks.
a) What do people recommend for load balancing Forms ... least connection, round robin ... ?
b) Do people use http://server:port/forms/frmservlet?ifcmd=status or have some of you used something else?
Thanks,
Philippe

How to monitor targets which are controlled by LOAD BALANCING mechanism

Hi,
I have installed Enterprise Manager 10.1.0.3 and upgraded it to 10.1.0.5. Then i have applied the Application plug-in patch for managing Oracle Applications.In my environment, we have two concurrent managers and four forms servers which are using Load Balancer.Please let me how to manage these concurrent managers and forms servers in that scenario.Would highly appreciate your suggestions regarding the same.Thanks in advance.
Regards,
Vamsi Manyam

This note shows how to configure OEM behind a load balancer.
The question was how to use OEM, not behind a load balancer, to monitor other targets which are behind one or different load balancers.
For example, to monitor :
Forms on server A and B behind load balancer LB1.
Forms on server C and D behind load balancer LB1.
Forms on server E and F behind load balancer LB2.
Gary

Installing 2 Application server and 1 DB server and load balancing for 11i

Hi,
I need info on how to install and configure load balancing for 11.5.8 on Win2000. The scenario: 1 db server DB, 2 apps/web/forms servers AP1 and AP2. Using rapid install you can only specify one db server A and one form server in multi node installations, right? How do I install the form server on AP2? Can I use the same config.txt? The computer name for AP2 is different.
Thanks & Regards,
Jagal

I have the very same issue. We want to install 4 web/form servers on a hardware load-balancer and the issue is we can only specify one forms server.
Does anyone know the secret bullet here?
Thanks
John

TMS RFC using load balancing in HA system

Hello all,
I have configured the TMS in my system (report TMS_MGR_LOADBALANCING) to use load balancing while communicating with the QA and the PROD systems which are HA systems.
By default, the user group SPACE was used for the RFC. Is there a way to change the user group that the RFC uses?
Regards,
Oren

Hi Matt,
Thanks. I did read this note when looking for a way to change the logon group. Since I did not find there any hint how to change it, I thought maybe someone else already found a way without rewriting the report. Appearantly there isn't...
Regards,
Oren

Deploy Forms and Reports with Load Balancing

I am trying to determine what we need to install here. I have read OracleAS, Web Cache, Application Server, and
Forms documents and have no answer still.
We are currently run 9iAS with Forms and Reports 6i only.
I did not do any of those installs. We are migrating to
Forms and Reports 10g. I need to setup an OracleAS 10g
Forms and Reports application server with the ability to
do Load Balancing over 2 windows Web servers to handle
4,000+ users. The application database will be on its own
Windows server.
Do I need to install the Infastructure, BI, and Web cache?
Or just Oracle 10g Application Server option? Or other?
Do I need to install it on both web servers and do
something like clustering? Do I need to install Web
cache? I just took the 10g AS class and basically did not learn anything about deploying Forms and Reports.
Can anyone give me a place to find the things I need to
install and setup?
Thanks.
Kim

I am a DBA and have not done an iAS or AS installation
before but am now required to learn it. We will be using
SSL and no load balancing hardware. We setup for other
customer sites and setting Windows servers in the past.
We have not done load balancing before.
I am just confused with all the 10gAS options there are to
install to just run 10g Forms and Reports and setup
OracleAS 10g with the load balancing features.
So I just need to install OracleAS Forms and Reports
Server if I am just installing Forms and Reports with SSL.
But if for Load Balancing Oracle 10g I need to cluster
just Reports 10g? I thought I would need OracleAS10g
installed on my two Windows servers and somehow cluster
or let the two know they are the same web page handling
the incoming requests? I do know about Apache redirct. Is
that an Apache feature and is it covered in an Oracle
documentation? They did not cover it in class either.

OracleAS 10g (9.0.4.0.2) Load Balancing Forms, Discoverer and reports

I am having some problems trying to load balance with Oracle Forms, Discoverer and reports Oracle Application Server Release 10g (9.0.4.0.2) and I was wondering if you could help. Has any one ever got this to work consistently? We are an ERP product written mostly in forms (904) and are trying to implement are largest customer there performance issue so we need the load balancing to work. Will also accept other recommendation as cost effective as solutions.
Site 1:
A: SERVER
     Host as1.xyzco.local
     Version 10.1.2.0.2
     Installation Type Identity Management and Metadata Repository
     Oracle Home E:\oracle\inf_1012
     Farm as1db.xyzco.net
o     HTTP_Server
o     Internet Directory
o     OC4J_SECURITY
o     Single Sign-On:orasso
o     Management
B SERVER
     Host as2. xyzco.local
     Version 9.0.4.0.2
     Installation Type Business Intelligence and Forms
     Oracle Home E:\oracle\mid_904
     Farm as2db. xyzco.net
o     Discoverer
o     Forms
o     home
o     HTTP_Server
o     OC4J_BI_Forms
o     Reports Server
o     Web Cache
o     Management
C SERVER
     Host as3. xyzco.local
     Version 9.0.4.0.2
     Installation Type Business Intelligence and Forms Discoverer and Reports
     Oracle Home E:\oracle\mid_904
     Farm as2db. xyzco.net
o     Discoverer
o     Forms
o     home
o     HTTP_Server
o     OC4J_BI_Forms
o     Reports Server
o     Web Cache
o     Management
All servers Are:
     Windows 2003 Standard Server with current service packs
     Xeon Dual Processor with 4GB ram
     Raid 0 drives 2 for OS and 2 for Oracle
Daniel Brody
([email protected])

I have more then half decent results with webcache as load balancer, but it still is a round robin (as mentioned before). This means that a session will not be transfered from one application server to the other once the session has been created.
So far I did not discover any benefits of a hardware loadbalancer over webcache, because (here it is again:) you are not able to transfer open sessions from one application server to the next. This has to do with the Oracle Forms architecture. In fact it is still client-server, only with the application server functioning as extra server ;)

Load Balancing Forms and Reports with Web Cache

We are planning to add a second OracleAS 10g middle-tier application server to an existing 10g middle-tier.
Both middle tiers will provide Forms and Reports.
Users must pass through two static HTML pages before starting Forms.
We plan to use Web Cache to load-balance (probably using round-robin) between the two middle-tiers.
Does anyone see any problems with this solution?
All comments/suggestions welcome.
Thanks,
Jim

You could also load balance the two OC4J's using standard servlet mechanisms. I know that there exists a couple of good notes on Metalink. Go and do a search.
Regards,
Martin Malmstrom

Load Balance Forms and Reports Services

Is it possible to Load Balance an application (written in Developer 9i) between
two computers running Oracle Application Server 10g (9.0.4) Forms and Reports Services ?
If it is possible, can anybody give an example or some kind of documentation, because
the product documentation is not clear.
Thanks in advance...

Yes it is possible, but it all depends on what is your definition of load balancing?? Do you mean hardware machine balancing or service availability??? this is a large territory and you have to be specific, you even have the RAC.
Oracle has [Oracle Application Server High Availability |http://download.oracle.com/docs/cd/B14099_19/core.1012/b14003/toc.htm] and metalink Note:740202.1 explains in detail how to configure it.
Tony

Forms/Reports with Reverse Proxy and Load Balance

Hello Guys,
I want to setup an environment with apache as reverse proxy for uses with Forms and Reports.
Is there any special configuration? Or just config rewrite rules?
Something like this:
Users -----> NLB Device -----> Reverse Proxy (Apache - 2 machines) -----> Oracle Application Server (Forms/Reports - N machines)
Best Regards

I haven't made one, but I think it should work, just dont forget to use proxypass and prosypassreverse.
Regards

Load Balancing Reports Server

I am supporting an app server for a Forms & Reports application that uses run_report_object to run reports on a Reports Server. This is on 10gR2 (10.1.2.0.2) on Solaris & Linux.
Currently running multiple standalone Reports Servers on a single server (for 3 different projects). Need to prevent one project from affecting another as much as possible (yes, I know they are on the same box....).
I have a requirement to ensure that a hanging Reports Server doesn't prevent other jobs from running. I see that Reports Server clustering is no longer an option. The Reports documentation about how to implement HA basically say just read the AS docs and figure it out. The problem is that using the AS J2EE HA means that you'd HAVE to use the Reports Servlet. Additionally, I don't see how the reports servlet could be called so that more than one Reports server would be used.
I keep hearing about an impending doc about implementing HA on Reports. When is it coming?
Future environments will be multiple AS installs on separate boxes accessing a RAC DB.
So, what's the scoop? How can I implement this?
So, here are my questions:
1. (Two Servers) I believe I could do this on two servers if I had the same Reports Server name on each. If so, could I have two OC4J containers on each server both with the same mount point for the rwservlet application? What else would I need to do to tell OHS to load balance between both since they have the same name.
2. (Two Servers) If 1 above is okay, would it be possible to have two OC4J containers point to two different standalone Reports Servers?
3. (One Server) Can I start up multiple Reports Servers on same box with the same name (I'm pretty sure this is no :-) )
4. (One Server) Like 2 above except on a single server. Two independent OC4J containers accessing two different servlets. Each has a default Reports Server setup. URL would look the same from each.
I'm kind of graping for straws here on how to move ahead. I'm surprised the Reports Server clustering was taken away, but I suspect it is because the underlying Visibroker architecture was changed and there weren't the resources required to redo this. I'm not sure that is a good thing.
Any help would be appreciated.
:-) Steve

Say you have two servers where you configured Reports, i.e. either in full Enterprise Edition or in AS10g Forms&Reports standalone.
For example:
ServerA.oracle.com with port 7777
ServerB.oracle.com with port 7777
Without using a load balancer you would call a Report with:
http://ServerA.oracle.com:7777/reports/rwservlet?report=test.rdf&userid=scott/tiger@orcl&destype=cache&desformat=htmlcss
http://ServerB.oracle.com:7777/reports/rwservlet?report=test.rdf&userid=scott/tiger@orcl&destype=cache&desformat=htmlcss
Now you put a load balancer in front of them and assign it the virtual name:
reports.oracle.comNow you can call Reports with this URL:
http://reports.oracle.com:7777/reports/rwservlet?report=test.rdf&userid=scott/tiger@orcl&destype=cache&desformat=htmlcss
To make it more interesting you create a specific Reports Server on ServerA called repserver_a and on ServerB: repserver_b. You add them into Enterprise Manager with:
$OH/bin/addNewServerTarget.sh repserver_a (on ServerA and with repserver_b on ServerB). You might need to reload opmnctl and emctl with:
opmnctl reload
emctl reloadIn $OH/reports/conf you add this line at the end (use server=repserver_b on ServerB) :
reporting: userid=scott/tiger@orcl destype=cache desformat=htmlcss server=repserver_a %* You'll call your Reports with this URL:
http://reports.oracle.com:7777/reports/rwservlet?reporting&report=test.rdf
Good luck!
Martin

Forms/Reports 11.1.2 Load balancing on Linux

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