user commits per minute in oracle database

 Script helps getting user commit statistics information in the oracle database. user commits is the number of commits happening the database. It will be helpful in tracking the number of transactions in the database. 

col STAT_NAME for a20
col VALUE_DIFF for 9999,999,999
col STAT_PER_MIN for 9999,999,999
set lines 200 pages 1500 long 99999999
col BEGIN_INTERVAL_TIME for a30
col END_INTERVAL_TIME for a30
set pagesize 40
set pause on
 
 
select hsys.SNAP_ID,
       hsnap.BEGIN_INTERVAL_TIME,
       hsnap.END_INTERVAL_TIME,
           hsys.STAT_NAME,
           hsys.VALUE,
           hsys.VALUE - LAG(hsys.VALUE,1,0) OVER (ORDER BY hsys.SNAP_ID) AS "VALUE_DIFF",
           round((hsys.VALUE - LAG(hsys.VALUE,1,0) OVER (ORDER BY hsys.SNAP_ID)) /
           round(abs(extract(hour from (hsnap.END_INTERVAL_TIME - hsnap.BEGIN_INTERVAL_TIME))*60 +
           extract(minute from (hsnap.END_INTERVAL_TIME - hsnap.BEGIN_INTERVAL_TIME)) +
           extract(second from (hsnap.END_INTERVAL_TIME - hsnap.BEGIN_INTERVAL_TIME))/60),1)) "STAT_PER_MIN"
from dba_hist_sysstat hsys, dba_hist_snapshot hsnap
where hsys.snap_id = hsnap.snap_id
and hsnap.instance_number in (select instance_number from v$instance)
and hsnap.instance_number = hsys.instance_number
and hsys.STAT_NAME='user commits'
order by 1;

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