Best Practice for creating Excel report from SSIS.

I have a requirement to create an Excel report on a daily basis which pulls data from SQL. I have attempted to resolve this by creating a stored procedure to save the results in SQL, a template in Excel to hold the graphs & pivot tables and an SSIS package
to copy the data to the template.
Problem 1: When the data turns up in Excel it is saved as text rather than numbers.
Problem 2: When the data turns up in Excel it appends the data rather than overwriting it.
I resolved problem 1 by having another sheet which converts the text to numbers (=int(sheet1!A1))
I resolved problem 2 by adding some VB script to my SSIS package which clears the existing cells before copying the data
The job runs fine, however when I schedule the job to run overnight it complains "System.UnauthorizedAccessException: Retrieving the COM class factory for component with CLSID". A little googling tells me that running the client side commands in
my vb script (workSheet1.Range("A2:F9999").Clear(), workBook.Save(), workBook.Close() etc) from a server side task is bad practice.
So, I am left wondering how people usually get around this problem; copy a SQL table into an existing Excel file and overwrite the data, without having the numbers turn up as text. My requirements are that the report must display pivot charts with selectable
options and be automatically updated overnight.
Help appreciated,
Bish.
Office 2013 on my PC, Office 2010 on the server, Windows Server 2008R2 Enterprise, SQL Server 2008R2.

I think that the best practice in case like this is to Link an excel file to a view or directly to a table. So you don't have to struggle with changing template, with overnight packages, etc. If the data are too much complex and the desiderate too excessive
then I tend to create a Cube and that's it...dashboard, graph and everyone is happy. In your case if the request is not too much try to don't use SSIS but directly build a view and point directly on SQL.
SSIS is really strong for the ETL, to run some stored procedure too heavy, to use a cut time scheduled, etcetera , etcetera, etcetera...I love it. But sometimes we need to find the easier solutions...
I hope this post helped you

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You can make it happen by creating a private connection for 40 users by capi script and when creating portlet select 2nd option in Users Logged in section. In this the portlet uses there own private connection every time user logs in.
So that it won't ask for password.
Another thing is there is an option of entering password or not in ASC in discoverer section, if your version 10.1.2.2. Let me know if you need more information
thnaks
kiran

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You can make it happen by creating a private connection for 40 users by capi script and when creating portlet select 2nd option in Users Logged in section. In this the portlet uses there own private connection every time user logs in.
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