No, "block changes" does not include redo. The volume of redo is identified from 'redo size' and 'redo writes'. "block changes" is only about database block changes -- the number of block changes. Of course, an update to a database block also generates redo -- but the volume of redo is better identified by 'redo size' which is in bytes. Hemant K Chitale On Sat, Sep 10, 2011 at 6:01 AM, CRISLER, JON A <JC1706@xxxxxxx> wrote: > Given the following snippit from a 11gR1 db, the line "Block changes"- does > that include redo as well ? > > > Cache Sizes Begin End > ~~~~~~~~~~~ ---------- ---------- > Buffer Cache: 126,976M 126,976M Std Block Size: > 8K > Shared Pool Size: 23,040M 23,040M Log Buffer: > 138,300K > > Load Profile Per Second Per Transaction Per Exec Per > Call > ~~~~~~~~~~~~ --------------- --------------- ---------- > ---------- > DB Time(s): 9.1 0.4 0.01 > 0.00 > DB CPU(s): 0.7 0.0 0.00 > 0.00 > Redo size: 294,701.7 13,914.8 > Logical reads: 43,820.4 2,069.1 > * Block changes: 1,829.8 86.4 > Physical reads: 46.2 2.2 > Physical writes: 114.7 5.4 > User calls: 2,585.1 122.1 > Parses: 519.3 24.5 > Hard parses: 13.8 0.7 > W/A MB processed: 25,411,313.0 1,199,836.5 > Logons: 1.1 0.1 > Executes: 1,627.6 76.9 > Rollbacks: 1.8 0.1 > Transactions: 21.2 > -- > //www.freelists.org/webpage/oracle-l > > > -- //www.freelists.org/webpage/oracle-l