How to find the maximum user doing commit operation or transaction in Oracle DB
Script helpful in tracking the number of transactions in the database.
Note: It used the AWR tables like dba_hist_sysstats or dba_hist_snapshot. So, need the license for access.
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;