19 lines
469 B
MySQL
19 lines
469 B
MySQL
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-- Copyright 2018 Tanel Poder. All rights reserved. More info at http://tanelpoder.com
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-- Licensed under the Apache License, Version 2.0. See LICENSE.txt for terms & conditions.
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SELECT
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POWER(2, TRUNC(LOG(2,NULLIF(time_waited,0)))) up_to_microsec
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, COUNT(*)
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, SUM(time_waited)
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, MAX(time_waited)
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FROM
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v$active_session_history a
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WHERE
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a.event = 'log file sync'
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GROUP BY
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POWER(2, TRUNC(LOG(2,NULLIF(time_waited,0))))
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ORDER BY
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up_to_microsec
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/
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