Alerts from PI for Exception Handling

We have a scenario where the incoming message is examined and if the value exceeds certain threshold, we want to generate alerts and send notification to a set of users. What are some of the options available that SAP would recommend or other customers have implemented?
Thank you!
Cheers
George

Multiple ways to trigger alerts in XI.
One of them shown in this blog of mine :
/people/bhavesh.kantilal/blog/2006/07/25/triggering-xi-alerts-from-a-user-defined-function
Or use BPM based alerts and so on.
Regards
Bhavesh

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What are the best practices for exception handling in n-tier applications?

What are the best practices for exception handling in n-tier applications?
The application is a fat client based on MVVM pattern with .NET framework.

What are the best practices for exception handling in n-tier applications?
The application is a fat client based on MVVM pattern with
.NET framework.
That would be to catch all exceptions at a single point in the n-tier solution, log it and create user friendly messages displayed to the user.

How to trigger alerts from UDF for file to file scenario

Hi,
My scenario is something like this.......
I have lookup in which there exists more than one output value corresponding to this one input value.In such cases i need to raise an exception and trigger an alert from UDF so as to inform the functional team.
Now this entire procedure has to be implemeted for file to file scenario.
I am not using any RFC nor do i need a BPM.
Entire scenario should be excuted without BPM and RFC.
Can anyone kindly suggest me as to how to proceed for this so as to trigger alerts
from UDF.
Thanks in advance
Madhu

HI,
Please see the below links
Triggering XI Alerts from a User Defined Function - /people/bhavesh.kantilal/blog/2006/07/25/triggering-xi-alerts-from-a-user-defined-function
Alerts with variables from the messages payload (XI) - UPDATED - /people/michal.krawczyk2/blog/2005/03/13/alerts-with-variables-from-the-messages-payload-xi--updated
/people/michal.krawczyk2/blog/2005/09/09/xi-alerts--step-by-step - Alert Configuration
/people/michal.krawczyk2/blog/2005/09/09/xi-alerts--troubleshooting-guide - Trouble shoot alert config
Regards
Chilla

Recommended Practice for Exception handling in JSP portlets

Hi,
This may be a redundant question, but hope to get some feedback on the generally used practice of catching exceptions in a JSP based Portal application.
Is it okay to just make use of the standard JSP errorpage directive in each of the JSP portlets to point to the same errorpage.jsp. If a problem occurs in any of the portlets, the userfriendly message in the errorpage.jsp would be rendered.
Of course there could be some kind of error logging done in the errorpage.jsp to track the error stack. This also means, that you would not want to catch any exceptions inside each of the portlet JSPs but rather let the errorpage directive, be the catch all?
regards
-Ananth

Mohana,
Pls ignore the voice mail,it was for something else and I was able to talk to Peter as well about this.
Regarding the error/exception handling -
If the errorPage.jsp is used in each of the JSP portlets with the help of the JPS errorPage directive, if a general system failure or major appln. error occurs, you will get the errorPage.jsp containing the user friendly message to show up in each of the half a dozen portlets on the page!!. Is that allright.
You cannot really redirect the entire page using the code inside the JSP portlet. It will only render inside the same portlet. The only way you can do this is to use Javascript.
-Ananth

Repeating Alerts from UDF for same error (message ID)

Hi Experts,
We have created a UDF that validates and incoming message and triggeres an alert if the validation rules are not met. The problem is that we are receiving several alerts for the same error (message ID), even after setting the "Max. No. Of Dels" option on the Alert Category in transaction ALRTCATDEF. It wasn't necessary to create a alert rule for this in the RWB because the alert is triggered directly inside the UDF. The max number of retries on the SOAP adapter has also been set to 1 but we are still getting repeating alerts for the same error (message ID).
If someone has encountered a similar problem in the past, please can you share the solution?
Thanks and regards,
Brendon

Hi,
If my understanding is not wrong, you are getting multiple alert for Mapping failure in UDF.
then I advice you not to change any Retry parameter for IServer or specific adapter as well.
the RWB -> Supress option will help, in case where a mail message reached Inbox, and further same incoming alert messageID
will be Supressed
Regards,
Ashutosh

Exception Handling in Message Mapping and Alert

Hello,
1. Pls let me know the concept of Exception Handling and Alerts.
2. Pls provide some blogs for Exception Handling in Message Mapping.
3.What are Alerts and how it help us in XI. Pls provide some blogs for Alert
4.How are Alerts and Exception Handling can be related say for some scenario
Regards

Hi,
Plz check out these blogs of Sravya on Error Handling:
/people/sravya.talanki2/blog/2006/11/22/error-handling-framework-xiout-of-the-box-episode-1
/people/sravya.talanki2/blog/2006/11/23/error-handling-framework-xiout-of-the-box-episode-2
Also check this SAP Presentation:
https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/9418d690-0201-0010-85bb-e9b2c1af895b
/people/alessandro.guarneri/blog/2006/01/26/throwing-smart-exceptions-in-xi-graphical-mapping
Error Handling :
http://help.sap.com/saphelp_nw04/helpdata/en/56/b46c3c8bb3d73ee10000000a114084/frameset.htm
Alerts:
/people/michal.krawczyk2/blog/2005/09/09/xi-alerts--troubleshooting-guide
/people/michal.krawczyk2/blog/2005/09/09/xi-alerts--step-by-step
http://help.sap.com/saphelp_nw04/helpdata/en/56/d5b54020c6792ae10000000a155106/content.htm
BPM:
/people/arpit.seth/blog/2005/06/27/rfc-scenario-using-bpm--starter-kit
Working with acknowledgements
regards

Extend BizTalk ESB Exception Handling to manage exception for all organization wide application exception

Hello,
Can we Extend BizTalk ESB Exception Handling to manage exception for all organization wide application ( both biztalk and external) exception ?
Is it something a good option or there are better approach to do this.
Business requirement is Exception management should be single window for complete end-to end application ( source-Biztalk - destination)
Tarun
Tarun

Hi Tarun,
ESB Toolkit framework for exception handling is not complete OOTB. it is intended as a framework and set of patterns that can and should
be extended based on the customer’s needs.
One way of extending the capabilities is by using Standardized Exception Management or SEM in short.
SEM solution extends the capabilities of the Microsoft ESB Exception Management Framework and follows a design pattern that provides a flexible
approach to exception monitoring and enables error responses to originate from outside of the solution. While SEM is primarily targeted to Microsoft BizTalk Server applications, it can also be leveraged by other applications that are able to call a Windows
Communications Foundation (WCF) or web service.
Refer: Standardized Exception Management
Standardized Exception Management (SEM)
Rachit

Environment.Exit hangs when called from an application domain exception handler

I've implemented a handler for exceptions not thrown in the main GUI thread of my C# WinForms application, as follows:
AppDomain.CurrentDomain.UnhandledException += OnUnhandledExceptionThrown;
This handler is called from a background thread. The last statement in this handler is a call to
Environment.Exit with the application exit code. However, the application hangs in this call. From within Visual Studio, it hangs and I'm unable to break the application; I have to use Task Manager to terminate Visual Studio. Environment.Exit
works fine when called from the unhandled exception handler for the GUI thread. Is there a better way to terminate the application in the context of an unhandled exception thrown by a background thread?

Are you just trying to avoid a crash? Environment.Exit can cause deadlocking if exiting in the wrong kind of scenario; if you're just trying to avoid a crash, use
GetCurrentProcess with
TerminateProcess to terminate your own process. It skips the notification phases that Environment.Exit uses which prevents the common deadlock scenarios.
WinSDK Support Team Blog: http://blogs.msdn.com/b/winsdk/

Exception handling for Null/Incorrect input parameters

Hi,
My BI Publisher report has input parameter name as <region>. It is a text field and is mandatory parameter.
But if I run the report without giving value to the parameter it gives the error "The report cannot be rendered because of an error, please contact the administrator."
How can I handle this scenario so that User defined message is displayed, asking user to give correct input.
I am using Oracle BI Publisher 10.1.3.3.3
Is there some documentation available for Exception Handling/How to display User defined messages in case of error?
My requirement is that after displaying the error message (say for example "Please enter Region name"), the report processing should stop there only and it should not display the blank pages of the rest of the PDF template.
Thanks in advance.

Hi,
Thanx for the solution.
I have another query linked to this issue. My requirement is that after displaying the error message (say for example "Please enter Customer name"), the report processing should stop there only and it should not display the blank pages of the rest of the PDF template.
Thanx in advance.

Step repeated in Exception branch requires exception handler, why?

I have a BPM Integration process with a sync send step calling a RFC. Any system errors and application errors are handled by an exception branch where I send an alert as then re-do the send step (so that it will fail but allow me to restart from that point after fixing the issue). The problem I am having is that in this send step, since it is mandatory to have an exception handler for application errors (defined fault message RFC.Exception), what do I enter for exception handler in this send step which is itself in an exception branch? I do not want to handle the exception this second time since I want this step to fail and process stops here to be able to restart manually later.

Hi,
I am not sure, how you will restart the step manually? Because once there is an error in the sync send, the message will turn to "Cancelled" status. You cannot restart this message.
Now, for the second send step in the exception block you will not be able to choose the same exception block in the exception handler field. But for some reason if this send also fails then you cannot restart the process manually - same reason i mentioned above. It will fail as you intended it to do so.
Regards,
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Exception Handling in bounded taskflows - expected behaviour

Hi,
I'm currently reviewing exception handling in bounded task flows and some things does not seems to be very clear for me.
(q1) Does it make sense that a bounded task flow calls a method (via a method activity) defined on the page definition of another page (outside of the BTF) by using a #{data.xxxmyPageDef.myMethodName.execute} EL expression?
(q2) Is is correct to expect the application to execute the method marked as ExceptionHandler in the taskflow, whenever an exception occurs?
(q3) I created 5 different scenarios where I call a service method which throws an exception, from within a page fragment of the BTF.
(q3 – sc1) Call a service method through the binding layer of the current page (by using #{bindings.xxx.execute})
Result: A dialog containing the exception message appears.
This is what I expected. Althought, the exception handler method does not seems to be invoked.(q3 – sc2) Call a service method through a task flow method activity using #{bindings.xxx.execute}
Result: A dialog containing the exception message appears.
This is what I expected. Althought, the exception handler method does not seems to be invoked.(q3 – sc3) Call a service method through a task flow method activity using #{data.myPageFragementPagedef.xxx.execute} (accessing the pageDef of the page fragment)
Result: Nothing happens.
This is not what I expected. Although, the exception handler method does nog seems to be invoked, I expect the ADF Error Handler to create a FacesMessage.(q3 – sc4) Call a service method through a task flow method activity using #{data.myPageContainingThePageFragmentPageDef.xxx.execute} (accessing the page containing the BTF region)
Result: Nothing happens.
This is not what I expected. Although, the exception handler method does nog seems to be invoked, I expect the ADF Error Handler to create a FacesMessage. (q3 – sc5) Call a service method through a task flow method activity using #{data.aPageOutsideTheBTFPageDef.xxx.execute} (accessing a page outside the BTW)
Result: Nothing happens.
This is not what I expected. Although, the exception handler method does nog seems to be invoked, I expect the ADF Error Handler to create a FacesMessage. (q4) How can it be possible that – without an exception handler – exceptions occur when calling method activities, without the exceptions being translated to FacesMessages?
Thanks in advance,
Koen Verhulst
JDeveloper 11.1.1.4

Koen,
+(q1) Does it make sense that a bounded task flow calls a method (via a method activity) defined on the page definition of another page (outside of the BTF) by using a #{data.xxxmyPageDef.myMethodName.execute} EL expression?+
No. Exceptions should be handled locally.
+(q2) Is is correct to expect the application to execute the method marked as ExceptionHandler in the taskflow, whenever an exception occurs?+
Only for exceptions that are before Render Response. The Render Response Phase is not handled in ADFc. So exceptions that occur in managed beans may fall through
+(q3) I created 5 different scenarios where I call a service method which throws an exception, from within a page fragment of the BTF.+
+(q3 – sc1) Call a service method through the binding layer of the current page (by using #{bindings.xxx.execute}) Result: A dialog containing the exception message appears.+
This is what I expected. Althought, the exception handler method does not seems to be invoked.
The binding layer has an error handler you can override in the DataBinings.cpx file
+(q3 – sc2) Call a service method through a task flow method activity using #{bindings.xxx.execute}+
Result: A dialog containing the exception message appears.
This is what I expected. Althought, the exception handler method does not seems to be invoked.
Again, you use the binding layer to invoke the service
+(q3 – sc3) Call a service method through a task flow method activity using #{data.myPageFragementPagedef.xxx.execute} (accessing the pageDef of the page fragment)+
Result: Nothing happens.
This is not what I expected. Although, the exception handler method does nog seems to be invoked, I expect the ADF Error Handler to create a FacesMessage.
Never use such a call. Its bad practice as there is no guarantee the container you reference is active. Always have the method call activity have its own binding defined when accessing a method call activity. I know there are lots of example floating aroundthat you #{data ...} and many are from 10.1.3. This should be avoided alltogether though
+(q3 – sc4) Call a service method through a task flow method activity using #{data.myPageContainingThePageFragmentPageDef.xxx.execute} (accessing the page containing the BTF region)+
Result: Nothing happens.
This is not what I expected. Although, the exception handler method does not seems to be invoked, I expect the ADF Error Handler to create a FacesMessage.
Again, this is not a proper use of the ADF framework.
+(q3 – sc5) Call a service method through a task flow method activity using #{data.aPageOutsideTheBTFPageDef.xxx.execute} (accessing a page outside the BTW)+
Result: Nothing happens. This is not what I expected. Although, the exception handler method does nog seems to be invoked, I expect the ADF Error Handler to create a FacesMessage.
accessing a page outside the BTW (!!!) This should ring a worst practices alarm on your laptop (obviously doesn't do it either)
+(q4) How can it be possible that – without an exception handler – exceptions occur when calling method activities, without the exceptions being translated to FacesMessages?+
Exceptions are not handled in a single place but stacked. The business service raises an exception and passes it to the binding layer if not handled. The binding layer handles the exception and if it can't passes it to ADFc. ADFc can handle this exception if it is not during Render Response.
Bottom line: There is no single point of exception handling. So as a recommendation for best practices
- Catch and handle exceptions as close as possible to their origins
- If things can go wrong, thy will - use try/catch blocks in managed beans
- Use an exception handling activity in all bounded task flows. In the case of task flow call activities being used exceptions can bubble up to the caller. However, this would take users out of their current application context
- Exceptions not handled in ADFc can be intercepted by overriding the application task flow exception handler (used by the exception handler activities). This would give you a chance e.g. to handle issues during Render Response
- Never fight the framework, never bend the framework: Don't use out of scope access to page definitions and resources. Exception handling is not a replacement for bad code practices (sorry for saying this, its not meant to be rude) :-)
Though I don't have a qualified numbers of bugs open for exception handling in ADF between 11.1.1.4 and now (and some that are open), but there are issues reported in this area. If there is something that really feels wrong, please go ahead and file a bug and provide a test case for development to have a look. The Render Response issue, for example is something we are aware of and that is in discussion (afaik knows, there is a change in exception handling in JSF 2 that may have an impact to what we can do in ADFc).
thanks
Frank

Exception handling across multiple classes

Is it possible to throw the exception from one class to another class for exception handling.............. can anyone tell me the way........

you don't throw it to a specific class. in the method where the exception might be thrown, you can choose to either catch it there, or just re-throw it so that the method before it can choose to catch it or throw it. you know what a stack trace is? it's a chain of methods that were called to get to a certain point in execution, and if an exception is thrown somewhere, either the method in which it is thrown deals with it, or it passes it back to the preceeding method in the stack
why were you trying to throw it to a class?

RFC: Exception handling

Hi there,
after playing a bit with external xml files provided by my
application i'm ready to go to the next topic on my ToDo-List.
How could one implement a good and stable technique for
exception handling? I'm talking about the interaction from spry to
our Web Framework which throws an error sometimes.
My current idea is that the server side framework could
return some kind of Error XML format which contains the exception
message and so on. This would require functions on client side to
precheck the server output.
Imho the best place for this is inside the XMLDataSet
constructor. When catching some bad XML file internal error
messages could be send using the already existing techniques OR by
providing an public function which then should be overriden by an
selfwritten one, e.g. to put it into my own `error box`.
Also, some kind of internal statemachine in XMLDataSet may
help a lot. That way each access to functions which aren't working
at the moment could be loggend and catched by an selfwritten
function.
I hope you get the idea,
what do you think?
Best regards,
Sebastian

Better error handling and error handling hooks is on the list
of things to do.
The way I see it, there are several types of errors that can
occur:
1. Server returns valid XML, but it's XML that describes an
error instead of the data requested.
- I believe this is what Sebastian was mentioning. I was
actually thinking of allowing a hook for developers to catch and
handle this case and perhaps leverage the states mechanism to let
them change the dynamic region markup used to display the error
since the data references in this error XML would be different.
2. The server returns an error. (Invalid URL or Server Error)
- This could be handled with states, but we need to expose
some data references, or set the data set to contain a known data
set schema that would allow the designer to show more info about
the error.
3. The server returns XML but uses a mime-type that is not
understood by Spy or the XML parsing code built-into the browser.
- I believe it was Doug [?] that had a patch that *always*
forced the data set to try and parse the XML string in the response
if the response didn't contain an XML DOM. My one paranoia about
that is that the server could actually be returning something that
is not XML, in which we would still fail and perhaps choke
somewhere else. I need to do some testing in that area.
I was thinking perhaps we should add something to the
XMLDataSet constructor that allowed a user to specify mime-types
for formats they knew were XML, but didn't use one of the standard
XML formats.
4. The browser chokes on "not-well-formed" XML.
- This is an interesting problem. IE silently fails when the
parser chokes, but Mozilla creates an XML DOM tree that reports the
error which does *not* match the XML string from the request
response. I had to add code to spry to detect when this happens.
5. An exception is thrown during Spry processing of XML data.
- This will require more programming on our part to handle
more cases.
--== Kin ==--

Interface for error handling.

Hi experts,
i have to design an interface for exception handling .there is a client system ( mainframe) linked to
sap system through webspher (ibm) .whenever ERN from the client system comes to sap system .
there will be 2 types .
1. the ERN is valid one.
2. the ERN is invalid one .
for the invalid ERN we have to inform the client system about the exception. this is through IDOC only ..
can any one sugesst the good techincal design.
regards
SV

please explain ERN , also what EDI transaction comes in and what idoc message/ idoc type is used?
Also look at EDI 864 which is a text message.
But give me more details.
BTW Welcome to SDN.
Message was edited by:
Sandeep Bhavsar

MC.9 and MCY1 and Exception Handling in (Logistics Inf. Sys)LIS

Hi,
I want the 'Valuated Stock Value" greater then or equal to zero (>=) appear in the MC.9 report. I can create 'Exception' in MCY1 but am unable to do so. Once I am in MCY1; I choose 'Requirements' then Key Figure 'Valuated Stock Value' then 'Type of condition' is 'Threshold Val. Anal.' is set to '> 0'. However, the report still displays zero values in MC.9. I don't want to display 'Valuated Stock Value' zero to be displayed on the report. Please help.
Thanks
Naved

Hey Chris,
I got the point for exception handling in weblogic 9.2. We ae using 9.2. It comes up with the concept of shared page flows which means all my unhandled exceptions are thrown to the shared page flow controller. There based on the type of exception, i can forward the request to appropraite page.
Thanks anywyas,
Saurabh

Alerts from PI for Exception Handling

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