57 lines
1.9 KiB
MySQL
57 lines
1.9 KiB
MySQL
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/**********************************************************************
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* File: filestat.sql
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* Type: SQL*Plus script
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* Author: Tim Gorman (Evergreen Database Technologies, Inc.)
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* Date: 20-Sep-99
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*
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* Description:
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* Report against the V$FILESTAT table to detect the tablespace
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* with the greatest I/O load, according the volume of reads and
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* writes, weighted against the average I/O time...
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*
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* Because this script depends on the timing information in the
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* V$FILESTAT view, please be sure to have the configuration
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* TIMED_STATISTICS set to TRUE to get the full value of this
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* report...
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*
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* Modifications:
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*********************************************************************/
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col ts_name format a25 truncate
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col sort0 noprint
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col io format a43 heading "Reads Writes|Rqsts,Blks,#Bks/Rqst"
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col rds format a25 heading "Reads|Rds/Bks(#bks/Rd)"
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col wrts format a25 heading "Writes|Wrts/Bks(#bks/Wrt)"
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col avgiotim format 999990.0
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set echo on feedback off timing off trimspool on pages 1000 lines 500
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col instance new_value V_INSTANCE noprint
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select lower(replace(t.instance,chr(0),'')) instance
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from v$thread t,
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v$parameter p
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where p.name = 'thread'
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and t.thread# = to_number(decode(p.value,'0','1',p.value));
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spool filestat_&&V_INSTANCE
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select avg(nvl(s.avgiotim,0)) * sum(nvl(s.phyrds,0) + nvl(s.phywrts,0)) sort0,
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f.tablespace_name ts_name,
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ltrim(to_char(sum(s.phyrds))) || ',' ||
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ltrim(to_char(sum(s.phyblkrd))) || ',' ||
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ltrim(to_char(sum(s.phyblkrd)/
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decode(sum(s.phyrds),0,1,sum(s.phyrds)),'990.0'))
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|| ' | ' ||
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ltrim(to_char(sum(s.phywrts))) || ',' ||
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ltrim(to_char(sum(s.phyblkwrt))) || ',' ||
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ltrim(to_char(sum(s.phyblkwrt)/
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decode(sum(s.phywrts),0,1,sum(s.phywrts)),'990.0')) io,
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avg(s.avgiotim) avgiotim
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from v$filestat s,
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dba_data_files f
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where f.file_id = s.file#
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group by
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f.tablespace_name
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order by sort0 desc, ts_name
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/
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spool off
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