Application instances and events

If I'm streaming three related events such as football1, football2, football3 is it best practice to create a unique application instance for each football event?
Or should all 3 events just be grouped under a single application instance?
Example: C:\FMS\applications\football1\_definst_\football1, C:\FMS\applications\football2\_definst_\football2, etc...
I was asking because the FMS Admin Console breaks down the connection information by application instance and then I could just pull it up and see how many users connected and total connects to each event without making a bunch of admin api calls.
Does this make sense?

Should we require the users to install Java(FX) AND THEN WebFX AND THEN type the URL of our appp AND THEN it will deliver the app to them ? why ? WHY ?
Hi,
I'm Bruno, the creator of the WebFX project.
About the questions above, I would say first that this is just a concept, but instead of thinking about the "browser", it could actually be used by real projects today that want to provide a JavaFX experience, without having to push big JARs for clients that might be in a very distant location with really poor connectivity. Also, it would make it even easier for the developer to update the application "on the fly", and his users would have access to the new version instantaneously.
Consider wrapping the "WebFX" concept in your "base" desktop application, and instead of using WebView to load parts of your app using HTML+JS, why not using a FXView (based on the WebFX concept) to render remote code?
Again, it's a concept, but I'm sure it can be really useful :-)
Hope I could clear all the questions!
Thanks,
Bruno Borges
@brunoborges

Similar Messages

Multiple application instances and inter process communication.

Hi,
I am looking at having a main application instance spawn individual application instances. But when launching another instance I need to message the main application so it can spawn a window.
How do I go about communicating between application instances in order to do this ?
Many thanks in advance,
Aaron

RMI is your best bet - or, if the IPC is pretty simple, then you could just open a simple socket listener in the primary app...
- K

Where do the files go when we deploy a user control, application page and event receiver?

I have read that the files go into the HIVE\TEMPLATES\CONTROL TEMPLATES or \FEATURES once deployed..
I have also read that we can right click on project and choose add mapped folder and select whether we want to put the page/user control under CONTROL TEMPLATES or FEATURES, etc?
Which method is to be followed?

The files in mapped folder created using Visual studio is copied to the appropriate folder in 14/15 hive on WSP deployment. Refer to the following articles for more information
http://www.informit.com/articles/article.aspx?p=1626325
http://blogs.msdn.com/b/vssharepointtoolsblog/archive/2010/03/12/deploying-files-using-mapped-folders.aspx
http://msdn.microsoft.com/en-us/library/ee231544.aspx
--Cheers

OIM11gR2 - How to migrate an Application Instance Form

Hello,
I'm trying to migrate an Application Instance Form from my Dev env to my QA env.
My target system is SAP
I performed the following steps in Dev:
1. Installed and configured the SAP Connector (no problem here)
2. Created a sandbox
3. Created an Application Instance
4. Created the Application Instance Form
5. Ran a target reconciliation to confirm everything is working properly
6. Exported the sandbox
7. Published the sandbox
8. Via Deployment Manager I exported all objects related to SAP (Resource object, Process Forms, Lookups etc.)
In QA I did:
9. Installed and configured the SAP Connector (no problem here)
10. Via Deployment Manager I imported the objects related to SAP
11. Imported the sandbox
Problem:
To my surprise, the Application Instance does not have a Form in the QA env.
I had to create it manually by performing the following:
12. Create a sandbox
13. Open the Application Instance definition
14. Click on create (to create a form)
15. Entered the same name I used in my Dev environment
16. Received an error message saying that the form already exists
17. Entered a different name for the Form
18. Saved
19. Exported the sandbox (to import in Prd)
20. Published the sandbox
21. Ran a target reconciliation to confirm everything is working properly
I tried to reproduce the problem with another (test) destination environment because I don't want to have the same problem when migrating to Prd.
I repeated the steps 9,10,11 except that I imported the sandbox exported from QA (step 19) instead.
The same problem: Application Instance definition has no Form attached to it in my test destination environment.
If I try to create the form with the same name, it gives an error message saying it is already there.
Is my procedure wrong?
Is there an official procedure explaining how to migrate only Application Instance Form from one env to another?
My env:
OS: Windows 2008 R2 SP1
OIM: 11gR2 BP7
SAP connector: 9.1.2.2.0
Thanks,
Adr

This is a bug: Bug:16027176
Check the [Article ID 1515225.1] which proposes a workaround that might be useful in your case (it was not in mine).
In short the workaround is:
The following order should be observed to export :
- IT Resource & Application instance in one xml
- Request DataSet in another xml
- SysAdmin Sandbox (the one defined while creating the Application Instance and the Form)
- Identity URL Sandbox (defined while customizing the fields on the Form, in the Catalogue page)
Adr

Application instance change in 8.2

Salut.
I have been using an home made deploying tool since LabVIEW 6.x.
Somewhere along the deployment, the tool does a save as on the source code of the deployed software. The deployment tool and the deployment software are both link to a library of VIs.
In LV6 and 7, i had to rename all the VIs used by the deployment tool in order for the save as to work because of the unique name in memory rules of those versions.
In LV8 i did not have to do this because my deployment tool was running in the "NI.LV.Dialog" application instance and the save as was working.
Now in LV8.2, it seems that it does not work anymore, i get an error stating that the VI cannot be saved in the current state. And i get this error on the shared VIs.
Is there a work around, or will i have to revert to doing a mass duplicate save as for the deployment tool VIs?

jacemdom,
I am not really clear on what is going on.
Is your deployment tool written in LabVIEW? If so, which version?
When you say a "library of VIs" are you referring to an llb?
What do you mean by the "NI.LV.Dialog" application instance?
Is it possible to create a simple project that shows the saving problem?
Is it possible to include a screenshot of the error you are seeing?
Doug M
Applications Engineer
National Instruments
For those unfamiliar with NBC's The Office, my icon is NOT a picture of me

Getting a VI reference from specific application instance via ActiveX

I have a DLL that a C program calls to pass data into my application. For performance sake, we had to use ActiveX to get the data into my application. I Open an ActiveX reference to my application and then open a VI reference to a Packet Stack and throw the data right into a queue. If I am developing, I change an INI setting to use the LabVIEW ActiveX server. This worked fine in 7.1 with the EXE and LabVIEW.
I recently upgraded the project to 8.5. The EXE still works with no issues, but in LabVIEW, the DLL always opens up the VI in the Main Application Instance. If I start my program in the Main Application Instance, then everything works fine. The problem is if I launch my program froms its project. Then my program is running in the My Application Instance, and when the DLL calls the Packet stack, the packets don't get put into the queues in My Application.
I saw this thread where Ben used VI server to find out what project a VI belonged to. This started me looking into using a similar method, but it seems I have to traverse the entire project to get to the VI to open a reference to it. What I would prefer to do is look in two places, Main Application and My Application for the VI and determine its run state. I was hoping there was some way in the VI name for open VI reference that I can specify the instance.
Please note that I am using ActiveX, not TCP/IP VI Server, so I do not believe the method outlined here can be used.
Thank you for any assistance.

I think this should help. I have never used the ActiveX interface but this is what I think that you want.
Off course you need to translate this into C but that shouldn't be the problem
Ton
Message Edited by TonP on 02-18-2008 07:16 PM
Message Edited by TonP on 02-18-2008 07:16 PM
Free Code Capture Tool! Version 2.1.3 with comments, web-upload, back-save and snippets!
Nederlandse LabVIEW user groep www.lvug.nl
My LabVIEW Ideas
LabVIEW, programming like it should be!
Attachments:
GetVIFromActiveX1.png ‏5 KB

SCOM-Difference between Problem Count and Event Count in Application Failure Analysis Report

Dear All,
Could someone explain me clearly , the difference between Problem Count and
Event Count in Application Failure Analysis Report. Please help me in understanding What is meant be problem and event in the report .
Thanks in Advance.
Regards,
Rajesh Kumar C

Hello Rajesh,
The "problem" is the logically grouped set of the exception events which have the identical hash calculated over several fields as "Stack", "Source", "Failed Function" and so on... So, even if exceptions are different
in the other properties but hash matches over the considered properties - then all those exceptions go into the same "problem group".
So, event is an instance of the problem. One event contributes to one problem but one problem might have a huge event count if you have a repeating issue.
The logic is similar for the performance analysis report, only fields that go into the "problem" hash are different. e.g. "Stack" is not used in hash for perf events...
Dmitry Matveev

Difference Between central instance And application instance

Hi every body can any one tell me that
what is the difference between Central instance and Application instance.
If i am using 4.7 ee with orcale data base.

Check these links
http://oreilly.com/catalog/sapadm/chapter/ch01.html
Basically these terms comes when you are working on live servers where all the users log into to do their daily work.
We says when we want to distribute the workload on servers we requires central instance and application servers.
Normally it is not known to common users where they are logging into...but they can login directly usign the specific Instance details of servers.
Please see this also
http://help.sap.com/saphelp_nw2004s/helpdata/en/c4/3a64e8505211d189550000e829fbbd/frameset.htm

What is an Instance in application server and how to create an Instance?

Hi All,
What is an Instance in application server and how to create an Instance? What is the procedure to get file path from an Instance?
What is the significance of Instance in ABAP?

hi
good
go through these links,this will gives you complee idea about the creating instances in application serverl.
http://www.erpgenie.com/sap/basis/
http://www.sapdevelopment.co.uk/file/file_disall.htm
thanks
mrutyun^

"alarm and event display" crashes my application

Dear All,
I use the "alarm and event disply.vi" in my DSC application. It works fine: I can acknowledge alarms, events etc. BUT...
When I double click the alarm item (or press Alt-Enter) and watch the alarm properties in the Alarm Properties dialog, I can usually watch the properties for some time, selecting the next or previous alarm item, but most often than not, my application just crashes. I don't get any LabVIEW error dialogs. Only Windows is telling me that the application stopped working and it just closes giving me no explanation. Sometimes I don't even see the Windows message.
I've tried this on two different computers... same boat!
I'm using:
- LV2011
- Windows 7
In my application I create the shared variables programmatically, set alarm thresholds programmatically etc.
Anybody had the same problem?
regards
Witold Nocon

Well…I think I have isolated the problem, and I have recreated it in the Boiler example. Here’s what’s happening:
If you watch the properties of the alarm in the Alarm and Event Display, and if this alarm “disappears” at this time, the application will crash. This will happen for example when this variable is set to AUTO ACK.
You can try setting the R02 pump to zero. This will cause the L01 level to increase reporting an alarm. Now if you set the flows so that the level start decreasing (I set the outflow to max, and the inflow tozero), and immediately click the HI HI alarm and watch it’s properties, the application will crash at the time when this alarm is cleared due to the decreasing level (AUTO ACK).
It also seems a “little non-deterministic” but this may be my own impression.
Anybody had a similar problem or is able to recreate it?

Difference between application server and central instance

Hi everyone,
whats the difference between application server and central instance and message server. where it will be installed. and how?
Regards
Basis Fresher

Hi,
just want to clarify that is is not correct that only one enqueue process can be configured on the CI.
Please see the documentation within transaction RZ11 for the parameter Parameter : rdisp/wp_no_enq
Short description : number of enqueue work processes
Parameter description :
You can use this parameter to define the number of enqueue work processes for the instance.
Ensure that a value >0 is only set on the central instance that provides the enqueue server (instance rdisp/enqname ). One enqueue work process on the central instance is normally sufficient (rdisp/wp_no_enq = 1); only in very large systems can a higher value be useful.
Kind Regards
Thomas Alt

Difference between Central Instance and Application server?

Can anybody let me know the exact difference betwwen a Central Instance and An Application server?

I think it can help you to understand the concepts:
http://help.sap.com/saphelp_40b/helpdata/en/08/5741a84ae611d1894f0000e829fbbd/content.htm
Best regards,
Itamar Marioto

Differnce between central instance ,dialog instance and application instanc

Hi all
Please explain me what is central instance. what is it differnce betwenn the
other instances like dilaog instance ,apllication instance.
What is the exact use of having many instances ?
regards
Sanjeev.S

Hi Sanjeev,
First of all let me Clarify between Cental instance(CI)and Central Service instance(SCS). When you install NW04/NW04s systems on WIndows, when you open you windows console, you would first find the SID name that you have installed and when you expand this you'll find 2 instances. When you expand the first instance you'll find that there are message server and Enqueue server listed. This instance is called as Central Service instance or simply called SCS. You can look at the folder structure /usr/sap/<SID>/.
Now the second instance is called as Central instance, when expanded you would see a SDM, a dispatcher and a server node. This is the instance which processes all your requests.
Now answering your question about Dialog instance, When the CI is overloaded, i.e. your dispatcher is overloaded and your server is overloaded , you would install a dialog instance, which means that the database need not be installed for the Dialog instance and it can be on any system. While installing the Dialog instance it would ask you which Cental instance I have to refer, then you would be giving the necessary system to which you have created a dialog instance.
Giving a graphical view,
SID < J2E>
< DATABASE>
<hostname>00 message server
                        enqueue server
<hostname>01 SDM
                        dispatcher
                        server0
This is your one SAP system. Now you feel that this system is overloaded with lot of users, any there are many user who will be logging in again, so what you would do is install a dialog instance which would be referiing to J2E database but will have its own dispatcher and server0. SDM, message server and enqueue server are only one per systems.
Now the dialog instance for J2E would look like this
SID < K2E>
<hostname2>01 dispatcher
                         server0
Dialog instance is mainly for load balacing, now you can access the database of J2E by typing a different URL i.e. of K2E and hostname2 but still accees the data of the J2E. The communication between Dialog and Central instance is thru message server.
In case you find it difficult to push thru, please let me know..

Component in Application Scope and cflock

Hi,
I have an CFC that I set in application scope in the
onApplicationStart method which contains some system parameters,
one of which is a flag saying whether the site is currently
"Online". I call a method on this CFC in the Application.cfc
"onRequest" method to see if the flag value has changed.
This method looks up a parameter set in the database that
says whether the site is "online" or "offline". If the site is
currently online, I want to only redo the query every 5 mins.
However if the site is offline, I want to check more frequently
(every 5 secs) as to whether the flag has changed back.
What I am not sure of, is whether I need to be using
<cflock> when I change from "online" to "offline"? There is
only a single instance of this object, but what happens if multiple
requests are calling the "isSiteOnline" method simultaneously? Is
this "safe"?
Some code snippets are attached to illustrate.
Any advice would be greatly appreciated.
Regards,
Andrew.

> 
No, in either situation.
Ask yourself... what would the ramifications be of two
requests hitting
that line of code "simultaneously"? The end result is that
both of them
are setting the variable to the same static value... so
that's what's going
to end up happening: variables.instance.cacheInterval is
going to be set to
300 (or 5) in each situation.
You could well with to lock a block of code which - if called
simultaneously via more than one request - could act on
shared storage
space (server, application or session data) differently and
incorrectly
than is intended.
eg:

<cfif not structKeyExists(application, isInitialised and
not
application.isInitialised>

<cfif allOK>
<cfset application.isInitialised = true>
<cfelse>
<cfset application.isInitialised = false>
</cfif>
</cfif>
So a sequence of events could be (say the user is hitting the
site with two
different browsers):
REQUEST1: application.isInitialised doesn't exist
REQUEST1: starts the init process
REQUEST2: application.isInitialised STILL doesn't exist
REQUEST2: starts the init process *again*
REQUEST1: sets the application.isInitialised value
REQUEST2: sets the application.isInitialised value
Obviously one does not want two request running the
initialisation code.
note this is a slightly contrived example, as if one has an
OnApplicationStart() method, then it will only run once, and
that's where
one would have the init code, but it demonstrates the issue.
Google "race condition". Those are the situations in which
one needs to
lock blocks of code.
Adam

TEM and FI/CO (Training and Event Management)

Hi All,
I wish to track actual cost per event in PE (TEM - Training and Event Management). Was considering having a Internal order per Instance of event. Have any Idea on how to set up something like this?
Appreciate all ideas,
LB

Hi Dean,
using internal orders you have to consider that sending and receiving cost center have to in the same company code.
If you do not want to distribute the costs to FI/CO but only report them, you can use the cost items provided by TEM. We have set up something similar for our plants in South Europe.
We have created some cost items and fill them manually with the training costs. Additionally we have created a report that evaluated this costs and combines them with the employee costs (derived from salary).
Best regards
Michael

Application instances and events

Similar Messages

Maybe you are looking for