2026-03-12 20:23:15

timhall/monitoring/top_sessions.sql

@@ -0,0 +1,39 @@
+-- -----------------------------------------------------------------------------------
+-- File Name    : https://oracle-base.com/dba/monitoring/top_sessions.sql
+-- Author       : Tim Hall
+-- Description  : Displays information on all database sessions ordered by executions.
+-- Requirements : Access to the V$ views.
+-- Call Syntax  : @top_sessions.sql (reads, execs or cpu)
+-- Last Modified: 21/02/2005
+-- -----------------------------------------------------------------------------------
+SET LINESIZE 500
+SET PAGESIZE 1000
+SET VERIFY OFF
+
+COLUMN username FORMAT A15
+COLUMN machine FORMAT A25
+COLUMN logon_time FORMAT A20
+
+SELECT NVL(a.username, '(oracle)') AS username,
+       a.osuser,
+       a.sid,
+       a.serial#,
+       c.value AS &1,
+       a.lockwait,
+       a.status,
+       a.module,
+       a.machine,
+       a.program,
+       TO_CHAR(a.logon_Time,'DD-MON-YYYY HH24:MI:SS') AS logon_time
+FROM   v$session a,
+       v$sesstat c,
+       v$statname d
+WHERE  a.sid        = c.sid
+AND    c.statistic# = d.statistic#
+AND    d.name       = DECODE(UPPER('&1'), 'READS', 'session logical reads',
+                                          'EXECS', 'execute count',
+                                          'CPU',   'CPU used by this session',
+                                                   'CPU used by this session')
+ORDER BY c.value DESC;
+
+SET PAGESIZE 14