Changing dataproviders for multiple webireports

Hi,

I have created an application in JAVA to change dataproviders for multiple webireports using RESTful service.  The following workflow is used by me.

1. Get the list of reports and the source/target universe from the user.
2. Process the following steps for each report.
3. Get the dataproviders and its source details of the report.
4. If there are dataproviders based on the source universe, capture their names.  Otherwise unload the document from raylight container using PUT call with payload for state unchanged.
5. If there are dataproviders that needs to be changed, get the proposal by making the GET call.
6. If all the objects are mapped successfully, POST the proposal to change the datasource.  Otherwise unload the document from raylight container using PUT call with payload for state unchanged.
7. If the data source is changed successfully, save the document using PUT call.

The above works fine when processing fewer reports say(5-10) reports.  But when I process more reports say 20 - 25 reports the application hangs (For some of the call there is no response).  I am using BI 4.1 SP5.  Is there any issue with my workflow.

Regards,

Subramanian S.