Retention Grace Period and Retain Extra Versions Please Help

[rkrishp2004]

I have taken a backup of /ora11 on November 5th 2003, at that time my retention period was 30 days and the Retain extra version was 30 days. (on copy group)



Suppose If I want to restore /ora11 on December 20th will it be possible, since I change the retention grace period and Extra version to 60 days on Dec 2nd????



Or We need to take another backup of that? Nov 5th was the last backup taken on that node, and there was an incremental on Nov 25th.



Hope this makes sense to all...



Please help me on this.



Thanks a lot



Krishna