Redo Log Switches Per Hour
--
-- Show the Number of Redo Log Switches Per Hour
--
 
SET PAUSE ON
SET PAUSE 'Press Return to Continue'
SET PAGESIZE 60
SET LINESIZE 300
 
SELECT to_char(first_time, 'yyyy - mm - dd') aday,
           to_char(first_time, 'hh24') hour,
           count(*) total
FROM   v$log_history
WHERE  thread#=&EnterThreadId
GROUP BY to_char(first_time, 'yyyy - mm - dd'),
              to_char(first_time, 'hh24')
ORDER BY to_char(first_time, 'yyyy - mm - dd'),
              to_char(first_time, 'hh24') asc
/


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