55 lines
2.5 KiB
SQL
55 lines
2.5 KiB
SQL
-- +----------------------------------------------------------------------------+
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-- | Jeffrey M. Hunter |
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-- | jhunter@idevelopment.info |
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-- | www.idevelopment.info |
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-- |----------------------------------------------------------------------------|
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-- | Copyright (c) 1998-2011 Jeffrey M. Hunter. All rights reserved. |
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-- |----------------------------------------------------------------------------|
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-- | DATABASE : Oracle |
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-- | FILE : perf_hit_ratio_by_session.sql |
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-- | CLASS : Tuning |
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-- | PURPOSE : Reports on all sessions along with their individual hit ratio. |
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-- | NOTE : As with any code, ensure to test this script in a development |
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-- | environment before attempting to run it in production. |
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-- +----------------------------------------------------------------------------+
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SET LINESIZE 180
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SET PAGESIZE 9999
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COLUMN unix_id FORMAT a10 HEAD Username
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COLUMN oracle_id FORMAT a10 HEAD OracleID
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COLUMN os_user FORMAT a20 HEAD OS_User
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COLUMN sid FORMAT 99999 HEAD SID
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COLUMN serial_id FORMAT 999999 HEAD Serial#
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COLUMN unix_pid FORMAT a9 HEAD UNIX_Pid
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COLUMN consistent_gets FORMAT 999,999,999,999,999 HEAD Cons_Gets
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COLUMN block_gets FORMAT 999,999,999,999,999 HEAD Block_Gets
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COLUMN physical_reads FORMAT 999,999,999,999,999 HEAD Phys_Reads
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COLUMN hit_ratio FORMAT 999.00 HEAD Hit_Ratio
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SELECT
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p.username unix_id
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, s.username oracle_id
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, s.osuser os_user
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, s.sid sid
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, s.serial# serial_id
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, LPAD(p.spid,7) unix_pid
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, sio.consistent_gets consistent_gets
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, sio.block_gets block_gets
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, sio.physical_reads physical_reads
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, ROUND((consistent_gets+Block_gets-Physical_reads) /
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(Consistent_gets+Block_gets)*100,2) hit_ratio
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FROM
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v$process p
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, v$session s
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, v$sess_io sio
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WHERE
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p.addr (+) = s.paddr
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AND s.sid = sio.sid
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AND (sio.consistent_gets + sio.block_gets) > 0
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AND s.username is not null
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ORDER BY hit_ratio
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/
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