2026-03-12 20:23:15

vdh/filestat.sql

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