Changing Environment of External Data Ranges

[floragray]

Hi All

I build about 20 odd reports in excel using an external data source(oracle database through an ODBC connection).
At the time of build, the report connections were established in the Development environment of the Database.
But now we want to pull data from the Production Environment instead - is there any place where i can change the connection settings centrally without having to change them in each and every report report?

i would really appreciate some help cz im about to get into trouble at work

Thanks a ton!!