How about: v$filestat.PHYBLKRD * blocksize v$filestat.PHYBLKWRT * blocksize v$log_history entries * size of logs. On Wed, 05 Jan 2005 20:54:04 +0000, ryan_gaffuri@xxxxxxxxxxx <ryan_gaffuri@xxxxxxxxxxx> wrote: > If I look at the physical reads in v$sess_io I can see how many writes. Is > there anyway to estimate how many bytes are being written to disk? This > includes undo. We want to use this for capacity planning purposes. We cannot > look at increases in volume since this needs to encompass updates and deletes. > -- > //www.freelists.org/webpage/oracle-l > -- Jared Still Certifiable Oracle DBA and Part Time Perl Evangelist -- //www.freelists.org/webpage/oracle-l