2026-03-12 20:23:15

timhall/10g/lock_tree.sql

@@ -0,0 +1,37 @@
+-- -----------------------------------------------------------------------------------
+-- File Name    : https://oracle-base.com/dba/10g/lock_tree.sql
+-- Author       : DR Timothy S Hall
+-- Description  : Displays information on all database sessions with the username
+--                column displayed as a heirarchy if locks are present.
+-- Requirements : Access to the V$ views.
+-- Call Syntax  : @lock_tree
+-- Last Modified: 18-MAY-2005
+-- -----------------------------------------------------------------------------------
+SET LINESIZE 500
+SET PAGESIZE 1000
+
+COLUMN username FORMAT A30
+COLUMN osuser FORMAT A10
+COLUMN machine FORMAT A25
+COLUMN logon_time FORMAT A20
+
+SELECT level,
+       LPAD(' ', (level-1)*2, ' ') || NVL(s.username, '(oracle)') AS username,
+       s.osuser,
+       s.sid,
+       s.serial#,
+       s.lockwait,
+       s.status,
+       s.module,
+       s.machine,
+       s.program,
+       TO_CHAR(s.logon_Time,'DD-MON-YYYY HH24:MI:SS') AS logon_time
+FROM   v$session s
+WHERE  level > 1
+OR     EXISTS (SELECT 1
+               FROM   v$session
+               WHERE  blocking_session = s.sid)
+CONNECT BY PRIOR s.sid = s.blocking_session
+START WITH s.blocking_session IS NULL;
+
+SET PAGESIZE 14