20 lines
729 B
MySQL
20 lines
729 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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CAST(begin_interval_time AS DATE) begin_time
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, AVG(CASE WHEN event_name = 'log file sync' THEN time_waited_micro/nullif(total_waits,0) END) avg_log_file_sync
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, AVG(CASE WHEN event_name = 'log file parallel write' THEN time_waited_micro/nullif(total_waits,0) END) avg_log_file_parallel_write
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FROM
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dba_hist_snapshot
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NATURAL JOIN
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dba_hist_system_event
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WHERE
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event_name IN ('log file sync', 'log file parallel write')
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AND begin_interval_time > SYSDATE - 15
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GROUP BY CAST(begin_interval_time AS DATE)
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ORDER BY
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begin_time
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/
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