Alan Gagne :
You might want to look at MOD(b.snap_id,step)=0 to remove the data spikes from database restarts.

Sorry feeble mind looking at old scripts.
I am using startup_time from dba_hist_snapshot on 10.2.
b.startup_time = e.startup_time

with stats as (
           select
                  st.stat_name,
                  st.dbid,
                  to_char(trunc(cast(begin_interval_time as date ))+
                          (ROUND ((cast(begin_interval_time as  date)- 
                            TRUNC (cast(begin_interval_time as date))) * 24) / 24),
                            'YYYY/MM/DD HH24:MI') btime,
                  Lag (st.value) OVER( PARTITION BY st.stat_name,st.dbid ORDER BY sn.snap_id)
                               value_beg,
                  st.value     value_end,
                  (cast(end_interval_time as date) - cast(begin_interval_time as date )) * (24*60*60) delta
           from
                  DBA_HIST_SYSSTAT  st,
                  DBA_HIST_SNAPSHOT sn
           where
                    sn.snap_id=st.snap_id and
                    sn.dbid=st.dbid and
                    (st.stat_name= 'physical read total bytes'
                  or st.stat_name='physical write total bytes' )
           order by begin_interval_time
     ) 
   select
          n.db_name, 
          btime,
          stat_name,
          (value_end-value_beg)/delta rate_per_sec
   from stats st,
       (select distinct dbid, db_name, host_name from dba_hist_database_instance) n
   where n.dbid=st.dbid
    and  (value_end-value_beg) > 0
/

verses metrics

select
               n.db_name||'_'||n.host_name,
               decode(metric_name,
                   'Physical Write Total Bytes Per Sec','write','read'),
               to_char(trunc(begin_time)+
                ( ROUND ((begin_time - TRUNC (begin_time)) * 24) / 24),
                       'YYYY/MM/DD HH24:MI'),
               average
        from dba_hist_sysmetric_summary           s,
             (select distinct 
                         dbid, 
                         db_name, 
                         host_name
                from dba_hist_database_instance) n
        where
               ( s.metric_name= 'Physical Write Total Bytes Per Sec'
                  or
                 s.metric_name= 'Physical Read Total Bytes Per Sec'
               ) and n.dbid=s.dbid
               order by begin_time;

Tyler,
I’ve got some ideas too on the AWR formatting, that tool was very useful on a recent Exadata tuning gig!

-Karl

Thanks for stopping by. I’d definitely be interested in collaborating.

Been meaning to send you some questions about questions about the AWR formatting – pretty cool ( AWR formatter )

- Kyle

The HTML output from sqlplus is easy to open in excel.

Tyler