Error handling, error-page
http://wiki.apache.org/myfaces/Handling_Server_Errors
has a bunch of info on error handling in myfaces. Is there something similar for mojarra? Or is any of this relevant for mojarra? Thx.
user3935812 wrote:
I have the same question.No kidding, seeing as you are the exact same user...
This is all Myfaces specific. The best you can do in a standard web environment is to use the error handling built into the server, which basically means catching specific HTTP error codes. Here is an example:
http://www.java2s.com/Tutorial/Java/0400__Servlet/ServletErrorPage.htm
Similar Messages
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Error Handler and Page Bindings
Hi,
I have a task flow with an error-handler defined. Any action-binding method calls which throw exceptions from the business layer are handled nicely by the error handler. The same doesn't happen though when the binding is in the page, tied to a button (as created when you drag a method from the data control palette onto the page). The exception is instead displayed in the calling page. What am I missing here?
Thanks,
Barry.Hi,
the ADF Controller catches excptions occuring while it processes an activity. If JSF catches the exception then this does not involve navigation and therefore the message displays on the page
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Bursting with JAVA APIs / MultiThreading / Errors Handling
We are trying to use the bursting JAVA APIs 10.1.3.3.1 Standalone) to burst huge XML files and generate PDF Files from RTF templates. Here are a list of our issues with this feature:
1. We have some problems catching the errors when bursting. We have tried to use the "oracle.apps.xdo.common.log.Logger" class, but it is not always reacting like we think it should. Could you please give us an exemple of a clean bursting error catching or a brief description of how we could do it. We have a lot of difficulties to find information about using the JAVA APIs of BIP.
2. Is it a clean way of catching the bursting errors to use the "oracle.apps.xdo.common.log.Logger" class?
3. When using the 10.1.3.3.1 DocumentProcessor JAVA API, the process gets killed when the RTF template is not where the control file specified it. Even when using a finally clause containing the document processor, we can't fetch the error from the "oracle.apps.xdo.common.log.Logger" class. We did not find a way to catch this error which make our program crash.
4. How can we enable multi-threading that is included in the DocumentProcessor JAVA APIs so it can take advantage of the multi-processors environnements?1. Check tim d. blog, you can use the bursting listners to get the errors. It's also in the documentation.
First, on every exception, the Bursting APIs are dumping the error in the Logger. So I can't see how we can use the listeners to catch these. We can check the hasExceptions on the Logger but still, we have some problems with this. When we deploy our application as a MDB (Message driven bean), it seems that once the hasException flag has been raised, if we call the MDB again, it is still up. Is there documentation about that Logger class? Also, I'm worried that we won't be able to call our MDB twice to run simultaneously 2 different bursting process since it seems the Logger is something static, keeping every exception in memory... That's bad.. And show me where you have found documentation about this. All I see in documentation is how to call the DocumentProcessor in a couple of lines. I don't see anything about a clean way to catch errors.
2. Yes/No/Depends. I think it's fine. If your changing the logger options in your program that could come back to haunt you.
I guess so, I'm not changing anything and its already haunting me...
3. When using the 10.1.3.3.1 DocumentProcessor JAVA API, the process gets killed when the RTF template is not where the control file specified it. Even when using a finally clause containing the document processor, we can't fetch the error from the "oracle.apps.xdo.common.log.Logger" class. We did not find a way to catch this error which make our program crash.
Even worst, when we deploy the component has an MDB, when the error happens, it kills the whole oc4j container... please correct this quick.
4. How can we enable multi-threading that is included in the DocumentProcessor JAVA APIs so it can take advantage of the multi-processors environnements?
We got an answer from the dev team which is to add two properties to the document processor, something like:
enable-multithreading: true
thread-count: >2
We did that and what we got is that the process started and it got stuck in a dead lock at the first document processing. How nice! :)
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If anyone has the magic answer, it would be pretty welcomed!
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Can not open 7.1 program in labview 8.5.1 -- handler error
I made a program in labview 7.1
And I wanted to open it in labview 8.5.1, but it opens with errors, and I can not run it.
In every sub vi, till the lowest level, I got the error "handler error".
Can somebody help me?Hi Sven,
Due to data dependencies within the *.LLB your 8.5.1 version of your vi was still opening the 7.1-version of the 'General error handler.vi'. Because these two version are no longer identical, LabVIEW concluded that the wiring you made was no longer correct.
Replacing the 'General error handler.vi' under the data dependencies with the one at: C:\Program Files\National Instruments\LabVIEW xxxx\vi.lib\Utility\error.llb
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NI Applications Engineering
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Hi
Here I have problem in setting up Error handling in outbound/inbound processing of Idocs in ALE....
Can any one please explain how to do it....
My requirement is, if ever idoc goes in to error then the user has to be intimated by mail in SAP Inbox.As per my knowledge it can be done through partner profile...if specify user name in partner profiles/post processing agent place.
My doubt is will it be same in outbound/Inbound?
Do i need to do anything other than specifying usernames in partner profiles?
What is the use of Idoc Administrator?
Please explain how to do that....
Awaiting your valuable answers...
Thanks
Suresh
Message was edited by: Suresh Babu MannemI think you also need to specify the "post processing agent" in your Partner profile - Message Type.
Check WE20.
In case you don't want to use organizational assignment then leave the task as it is as general task.
So only the user specified in "post processing agent" will be taken into consideration.
Here are the steps that you need to do for a complete error handling procedure ( but you can avoid organizational assignment if you just need to use User Name as receipient ):
I've taken it from F1 help on error handling:
Error Handling
In this section, you can make the settings for error handling:
Create organizational units and assign standard tasks
Maintain EDI administration ( Idoc administrator section on Xn OYEA or We40 )
Maintain error process code ( Xn OYEA or We40 )
Further you can check it using Verification Processing on OYEA / WE40 .
Errors are processed in the system in which the error occurred.
You can repost IDocs that were not posted (with status 51) using program RBDMANIN.
Requirements
ALE error handling uses workflow. A standard task is provided for each message type. Task TS20000051 is used for all BAPIs.
Workflow functions as follows:
A task (work item) is generated for the error handling and stored as a message in the inboxes of the employees responsible.
If one of these employees processes the work item, the standard task method for error handling is started. The user can, for example, restart IDoc processing.
If the IDoc is processed successfully, the work item is deleted from the inboxes of all the employees involved.
For this procedure to function, the employees responsible for a particular message type and partner (sender or receiver) must be defined as follows:
1. A hierarchy of organizational units (for example, "sales office") and positions (for example, "customer officer for customer X") is created and employees are assigned to it.
2. The standard tasks for error handling (for example, an error related to an inbound sales order) are assigned to the relevant organizational units or positions (for example, "sales office").
3. The organizational unit, position or employee responsible for dealing with the error are specified for each partner and message type in the partner profiles.
If an error occurs, the system determines:
1. The employees responsible using the staffing schedule of the organizational unit or position linked to the standard task.
2. The employees defined in the partner profiles (using position, user ID, or organizational unit).
3. The employees appearing in both groups represent those who will receive a work item in their inboxes.
Activities
Create organizational units and assign standard tasks
Maintain EDI administration
Maintain error process code
If you used EDI communication in an earlier version, you can check the assignment of error process codes to the standard tasks.
Check names of the employees responsible in the partner profiles. -
How to handle error pages in JSF
Hii,
I am facing problem in JSF handling server side errors like faces exception.
For Ex; if i have a JSF screen,if i enter invalid data it will show error in the same page if i use messages tag,but i need to display errors in another page like error pages.
i tried to do as we do in JSP,but facesServlet is not supporting.
i am very thankful if anyone can help.How about asking in the JSF forum where the experts are?
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Thank you jscher2000! This seems to have fixed it! I appreciate it :)
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Page Error handling question..
Using APEX 4.1.1.. Hosted instance.. I am testing various error handling functions (Oracle's standard one from documentation and others). I have a page with a standard report, I have defined the page to have an associated error handling function. On the report I have a calculated column that should error out due to a division by 0 error..
Now what I had thought was, the page would handle the error more gracefully than previous version, in that it would show the custom error message I define in the constraints table...
Is there a section of the documentation I am missing that shows at what point the error handling function kicks in and where we need to invoke it otherwise?
Thank you,
Tony Miller
Dallas, TXInteresting. Had never considered this aspect.
Just did a couple of tests - so it must only come into play from the PL/SQL engine.
Created an sql report:
select floor(dbms_random.value(1,10))/0 num
from dual
connect by level <= 10But the error function never gets hit.
begin
for i in (select floor(dbms_random.value(1,10))/0 num
from dual
connect by level <= 10) loop
htp.p(i.num);
end loop;
end;Function gets hit.
Just looking at the docs, there doesn't appear to be any indication of processing point.
But from Patrick's blog:
This includes errors raised by validation, process, … and all errors raised by the Application Express engine itself.http://www.inside-oracle-apex.com/apex-4-1-error-handling-improvements-part-1/
I guess an SQL report isn't considered as an 'all errors raised by the apex engine'. -
Ok I had my cfm server hacked last week. They used a sql
injection. The think that is driving me nuts is I can not set up a
"Detaul Error handling page" in my cfm server. my other older
version 5 works fine. Why have they never fixed this bug.
I looked up the issue and found a fix it did not worked. Does
anyone hae a sugggestion on how I can fix this so an intruder can
not ready ever bit of code on the error page to help fine tune
there attacks.user3935812 wrote:
I have the same question.No kidding, seeing as you are the exact same user...
This is all Myfaces specific. The best you can do in a standard web environment is to use the error handling built into the server, which basically means catching specific HTTP error codes. Here is an example:
http://www.java2s.com/Tutorial/Java/0400__Servlet/ServletErrorPage.htm -
Since I upgraded my firefox..I get this box most of the time when I click on a link to go to another page...
Java Script
Exc in ev handl: Error: Bad NPObject as private data! Then I have to click ok to get the page to open.That issue can be caused by the McAfee Site Advisor extension
*https://support.mozilla.com/kb/Troubleshooting+extensions+and+themes
Start Firefox in <u>[[Safe Mode]]</u> to check if one of the extensions or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).
*Don't make any changes on the Safe mode start window.
*https://support.mozilla.com/kb/Safe+Mode -
Error Handling subtab missing in APEX 4.2 during update page.
Does anyone know if error handling page is replaced by something else in APEX 4.2. I can’t see error handling sub tab when I go for update of any existing page. It used be below page attribute at the upper right corner in earlier version.
Hi,
I just checked this on apex.oracle.com and can see both the 'Error Handling' 'sub tab' and the relevant region on the page with attributes for 'In-Line Error Notification Text' and 'Error Handling Function'. This is on the 'Edit Page' page in the builder (4000:4301). Is this the page you are on and are you still not able to see this?
Regards,
Anthony -
Report and Alert don't executed in the error handler with a JMS proxy service
Hi,
I'm working with OSB 11.1.1.4.0 and I'm facing a problem with the error handler of my JMS proxy service.
My error handler contains two main elements :
- a Report action
- an Alert with a JMS destination defined
When the business service failed the message remain in the queue. It's the expected behavior.
The problem is :
- the report is missing
- the alert is raised but missing in the JMS destination defined in the Alert setting.
I've noticed if I add a Reply with Failure or Success, Report and Alert are successfully executed.
Unfortunately the message don't remain in the JMS queue.
What can I do in order to have my report/alert done and the JMS transaction rollback in order to keep the message in the queue ?
I've already met this problem in the past with alsb v3 and my solution was to add Service Callout in the error handler in order to externalize these actions.
This solution is not convenient and I hope another solution is possible.Inventorying workgroups can be difficult, especially when it comes to remote access and network security. Because workgroups are not centrally managed, some of the items discussed in this
wiki article on preparing your workgroup environment may require you to visit each machine individually.
For non-domain credentials, you do not use the <systemname>\<user> format, you simply enter the user name. Regarding how to enter the credentials, if you have an account that uses the same username and password on all machines and is an administrator
on all of those machines, then you can enter that in the All computers credentials page of the wizard. You can also do this if they are different user names. However, if some machines have an account with the same user name, such as Administrator,
but different passwords on each machine, you will need to use the Manually enter computer names discovery method, and then enter the information for each group or each machine.
As you can tell, workgroup environments can quickly negate any benefit that the agentless inventory nature of MAP provides.
Please remember to click "Mark as Answer" on the post that helps you, and to click
"Unmark as Answer" if a marked post does not actually answer your question. Please
VOTE as HELPFUL if the post helps you. This can be beneficial to other community members reading the thread. -
Why APEX 4.1 Error handling function does not trap the error of missing table?
Say, I create simple application with single IR report page and I also assign standard simple error handling function.
Function works perfectly, except but this case:
If I just drop a table used by report page and then refresh the page I am getting usual APEX error message:
ORA-20001: get_dbms_sql_cursor error ORA-00942: table or view does not exist
and error handling function is not invoked at all.
Is this a feature or a bug?Hi,
Check the corrections given in the note 990764:
Reason and Prerequisites
Up to now, using a characteristic with its own master data read class as the InfoProvider was not supported. This is now released but it is not available for all modelings. Using the attributes in the query is not supported for characteristics that have their own master data read class. Using the attributes in the query causes a termination. The following errors may occur in this case:
ORA-00942: table or view does not exist
Fehler in CL_SQL_RESULT_SET Include NEXT_PACKAGE
RAISE_READ_ERROR in CL_RSDRV_VPROV_BASE
Solution
SAP NetWeaver 2004s BI
Import Support Package 11 for SAP NetWeaver 2004s BI (BI Patch 11 or SAPKW70011) into your BI system. The Support Package is available once Note 0914305 "SAPBINews BI 7.0 Support Package 11", which describes this Support Package in more detail, has been released for customers.
In urgent cases you can implement the correction instructions.
The correction instructions contain the tightened inspection for characteristics.
Regards,
Anil Kumar Sharma .P -
Issue with SRDemo error handling
Hi All,
Glad the forums are back up and running. In debugging some error-handling issues in our own application, I found an issue in the error handling code of SRDemo. I thought I'd post the issue here, as many of us (myself included) use some SRDemo code as the basis for our own applications.
The issue can be found in the oracle.srdemo.view.frameworkExt.SRDemoPageLifecycle class, specifically in the translateExceptionToFacesErrors method. I'll show the code that has the issue first, and explain the issue afterwards:
if (numAttr > 0) {
Iterator i = attributeErrors.keySet().iterator();
while (i.hasNext()) {
String attrNameKey = (String)i.next();
* Only add the error to show to the user if it was related
* to a field they can see on the screen. We accomplish this
* by checking whether there is a control binding in the current
* binding container by the same name as the attribute with
* the related exception that was reported.
ControlBinding cb =
ADFUtils.findControlBinding(bc, attrNameKey);
if (cb != null) {
String msg = (String)attributeErrors.get(attrNameKey);
if (cb instanceof JUCtrlAttrsBinding) {
attrNameKey = ((JUCtrlAttrsBinding)cb).getLabel();
JSFUtils.addFacesErrorMessage(attrNameKey, msg);
}Now, this bit of code attempts to be "smart" and only show error messages relating to attributes if those attributes are in fact displayed on the screen. It does so by using a utility method to find a control binding for the attribute name. There are two issues with this code, one obvious, and one that is a bit more subtle.
The obvious issue: if there is a binding in the page definition, it doesn't necessarily mean that the attribute is shown on the screen. It's a good approximation, but not exact.
The other issue is more subtle, and led to errors being "eaten," or not shown, in our application. The issue comes if you are using an af:table to display and update your data. In that case, the findControlBinding will not find anything for that attribute, since the attribute is contained within a table binding.
Just posting this as a word to the wary.
Best,
johnsomehow, this message got in the wrong thread....
Hi Frank,
Yes, I simply scripted it out this way to contrast the behaviour if the first attribute was read-only vs not read-only. I found the issue on a page in our app that was simply drag-and-drop the VO from the data control on the page.
It's quite annoying, because our particular use case that hit this error is a "save" button on the page. If the commit operation doesn't return any errors (and it doesn't in this use case!), we add a JSF message saying "save successful" - then the attribute errors are further added later in the page lifecycle, so we get 3 messages: "Save successful" and "Fix this error" and "Tried to set read-only attribute" - quite confusing to the end-user when the only message they should see is "fix this error."
At any rate, the fix is to simply re-order the attributes in the page definition - that doesn't affect the UI at all, other than to fix this issue.
John
it was supposed to be something like:
Hi Frank,
Thanks for the reply. I was simply posting this here so that people who use the SRDemo application techniques as a basis for developing the same functionality in their own apps (like me) can be aware of the issue, and avoid lots of head-scratching to figure out "what happened to the error message?"
John -
JSF error handling when the bean is not correctly loaded
Hi,
I am doing some error handling in JSF and I want to do it in an elegant way. I have the following scenario for error handling.
When the bean is initialized I load the bean with values from DAO which give SQL Exceptions.
Since the bean is not loaded I properly I have to send the user to an error page showing the error message why I am sending the user to this page.
I can do it by [ FacesContext.getCurrentInstance.redirect("/error.jsf") ] doing so I will loose all the FacesMessages that are added by the exceptions.
Instead I want to use the [ FacesContext.getCurrentInstance.dispatch("url") ] which will allow the transfer of the user but I get the following
16:59:39,341 WARN [lifecycle] executePhase(RESTORE_VIEW 1,com.sun.faces.context.FacesContextImpl@8537f9) threw exception
java.lang.ClassCastException: javax.faces.component.UIViewRoot
and the method that I am calling is
public static void programErrorEnd() {
logger.info("in the prgmErrorEnd mehod");
//intializing the contex object
FacesContext ctx = FacesContext.getCurrentInstance();
try {
//ready to dispatch the url.
//ctx.getExternalContext().redirect("app/error/prgmerror.jsf");
ctx.getExternalContext().dispatch("error/prgmerror.jsf");
} catch (IOException e) {
//TODO what to do when there is an error at this stage.
finally {
ctx.responseComplete();
}Thanks and Regarding
Edited by: sgatl2 on Aug 28, 2008 2:32 PM
Edited by: sgatl2 on Aug 28, 2008 2:45 PMJust let it throw the exception and define an error-page entry in the web.xml which catches the specified exception (or a superclass of it or a HTTP status code) and displays the error.jsf page accordingly.
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