Come back to share one more issue with all of you in which I have spend almost two days to do a extensive debugging to find out the root cause. This issue is based on browser enabled InfoPath form which was throwing an error while loading it. Let me confirmed you one thing that this form is not at all customized one and all components has been designed by using default functionality. Let me brief the details:
Issue: Browser enabled InfoPath form suddenly stopped working while loading and throwing the exception as mentioned below:
Error message: There has been an error while processing the form. An error occurred accessing a data source.
Click Continue to resume filling out the form. You may want to check your form data for errors. Click Start Over to load a new copy of the form.
The above error seems to be quite often and it hints that there is some problem with the ‘Data Source/Connection’. If the form is showing the error while loading i.e. form never loads but shows a message to ‘continue or start over’, then there is some problem with the data source which is set up to ‘Automatically retrieve data when form is opened’.
· Downloaded the actual form to my desktop and tried republishing it to my personal site
· Form has been successfully published but same error persists.
· If we removed all the data connections from the library then the form loads fine without any issues
· If we tried setting up the data connections one by one then also we are facing the same error message.
· Tried creating the data connection by using XML method also but faced the same error message.
· Tried creating the data connection by using web service but same problems persist.
Gathered SP logs from front ends to check for any detailed exceptions
The following query failed: ID (User: SPDomain\amol ghuge, Form Name: Assessment, IP: , Request: https://sharepoint2007/_layouts/FormServer.aspx?XsnLocation=sharepoint2007/Forms/template.xsn&SaveLocation=sharepoint2007&Source=sharepoint2007/Forms/AllItems.aspx&DefaultItemOpen=1, Form ID: urn:schemas-microsoft-com:office:infopath:Assessment:-myXSD-2010-11-22T16-18-42, Type: DataAdapterException, Exception Message: The data connection ID returned more than the currently configured maximum of 1500 KB of data, and the connection attempt was stopped. To i... 1aab5aab-5f07-4089-a693-096a5a4697a2
07/12/2012 14:13:29.60* w3wp.exe (0x12BC) 0x30E0 Forms Server Forms Services Runtime - Data C 82fy Warning ...increase the amount of data that can be returned in a data query, change this setting in the InfoPath Forms Services configuration page in SharePoint Central Administration.) 1aab5aab-5f07-4089-a693-096a5a4697a2
As per the sharepoint logs, it clearly suggest that we have to make the changes in the InfoPath configuration settings which is a present in application management (Central Administration)
§ Central Administration
§ Application management
§ Configure InfoPath form services
§ Data Connection Response Size: By default is 1500 kilobytes
§ Increased this value to 1550 and then the form has been successfully loaded without any error message.
If you have any queries/questions regarding the above mentioned information then please let me know. I would be more than happy to help you as well as resolves your issues, Thank you.