RMAN delete obsolete

From: dk <dkight_at_comcast.net>
Date: Thu, 05 May 2005 14:34:33 -0400
Message-ID: <f4ednaDZi7Km-uffRVn-qA@comcast.com>

If I specify a recovery window of 7 days internal to rman, then perform a backup using a recovery windows of 2 days(see below). Which one will take recedence?

I'm looking for a way to have the rman catalog be aware of 7 days worth of backups exists but I only want to keep 2 on disk. OS backups are taken nightly. Will the below do the job???

run { backup database plus archivelog; } report obsolete;
delete noprompt force obsolete recovery window 2; resync catalog;
exit;

RMAN configuration parameters are:
CONFIGURE RETENTION POLICY TO RECOVERY WINDOW OF 7 DAYS; Received on Thu May 05 2005 - 13:34:33 CDT