ErikYkema wrote:
> Hi,
> We were discussing new RMAN features with our DBA team and touched the
> topic of incrementally updated backups on an image copy (disk),
> allowing for incremental-backups only, since the last incremental will
> be merged back into the image copy (my own wording for this
> mechanism.)
> And this in combination with Block Change Tracking (BCT)
> A theoretical drawback of BCT could be of that not all blocks are
> checked for corruption during a level 0/1/2 backup, since in my
> understanding, on every level, without BCT, the _whole_ database is
> read by RMAN.
> 1 - is there indeed a risk of not being early warned for a bad block
> when using BCT?
> 2 - what would be a wise mitigation of this risk?
> Regards, Erik Ykema
Incremental backups should always be interlaced with level 0 backups.
--
Daniel A. Morgan
University of Washington
damorgan_at_x.washington.edu (replace x with u to respond)
Puget Sound Oracle Users Group
www.psoug.org
Received on Wed Jul 18 2007 - 19:54:05 CDT
