May be a dumb question but would like to have an explanation to my scenario so that I understand it better. Let's consider we have a source db and a hotspare db; Scenario 1: 1. Truncate the source BI 2. Use probkup to back up the source db or use mark backedup 3. Begin AI on source DB which will in turn truncate the BI file Scenario 2: 1. Use probkup to back up the source db or use mark backedup 2. Begin AI on source DB which will in turn truncate the BI file If I try to switch and roll forward the AI extents to hotspare db; will there be any issue during roll forward in scenario 2 as am letting AI begin truncate the BI file of source db? There should be a delta difference in BI after backup in scenario 2 - isn't it?