2026-03-12 20:23:15

vdh/top_redo_generators.sql

@@ -0,0 +1,29 @@
+set linesize 150
+set pages 9999
+
+column sid format 9999
+column serial# format 99999
+column name format a20
+column username format a15
+column logon format a20
+column idle format a10
+column value format 9G999G999G999
+column program format a50
+
+select sid, serial#, username, program, name, value, logon, idle
+from ( select sess.sid, sess.serial#, sess.username, program, statn.name, sesst.value,
+              to_char(sess.logon_time, 'DD/MM/YYYY HH24:MI:SS') logon,
+              floor(sess.last_call_et/3600)||':'|| floor(mod(sess.last_call_et,3600)/60)||':'|| mod(mod(sess.last_call_et,3600),60) idle,
+              row_number() over
+                ( partition by statn.name
+                  order by sesst.value desc
+                 ) rn
+       from v$session sess, v$sesstat sesst, v$statname statn
+       where sess.sid = sesst.sid
+             and sesst.statistic# = statn.statistic#
+             and statn.name in
+                ('redo blocks written', 'redo size', 'redo wastage')
+             and sesst.value > 0
+     )
+where rn <= 5
+order by name, value desc;