Re: An unusual case of recovery asking for an archived log from long time a go.
Date: Fri, 17 Feb 2012 15:58:01 +0100
it's very unlikely, but can you check if your datafiles where put into backup mode and never put back by something like
ALTER DATABASE BEGIN BACKUP;
v$backup might help to answer this question.
It's just a question from the back of my brain, nothing certain at all.