2026-03-12 20:23:15

2026-03-12 21:23:47 +01:00
parent eab4b36eca
commit 93039b8489
3332 changed files with 699614 additions and 0 deletions
--- a/vg/locks_blocking.sql
+++ b/vg/locks_blocking.sql
@@ -0,0 +1,100 @@
+@@header
+
+/*
+
+Author   : Vishal Gupta
+Purpose  : Displays blocking locks in database
+
+*  Revision History:
+*  ===================
+*  Date       Author        Description
+*  ---------  ------------  --------------------------------------------------------
+*  19-Oct-12  Vishal Gupta  Added ClientProcess in output and changed column sizing
+*  18-Apr-12  Vishal Gupta  Replace with gv$session with materialize hinted
+*                           sub-query factoring (CTE - common table extression)
+*  27-Feb-12  Vishal Gupta  Created
+*
+*/
+
+PROMPT 
+PROMPT *********************************
+PROMPT * B L O C K I N G    L O C K S 
+PROMPT *********************************
+PROMPT 
+
+COLUMN INST_ID                        HEADING "I#"                          FORMAT 99
+COLUMN SID                                                                  FORMAT a30
+COLUMN username                       HEADING "UserName"                    FORMAT a20 TRUNC
+COLUMN lock_type                      HEADING "Lock|type"                   FORMAT a4  TRUNC
+COLUMN lock_Name                      HEADING "Lock Name"                   FORMAT a22 TRUNC 
+COLUMN lmode                          HEADING "Lock|Held"                   FORMAT a10
+COLUMN request                        HEADING "Lock|Request"                FORMAT a10
+COLUMN osuser                         HEADING "OSUser"                      FORMAT a20 TRUNC
+COLUMN machine                        HEADING "Client|Machine"              FORMAT a20 TRUNC 
+COLUMN process                        HEADING "Client|Process"              FORMAT a10
+COLUMN program                        HEADING "Program"                     FORMAT a30 TRUNC
+COLUMN event                          HEADING "Event"                       FORMAT a30 TRUNC
+
+
+
+--
+-- Need to use Subquery for gv$session, otherwise session is disconnected with 
+-- ORA-07445 [qksopCheckPropOpt] when joining dynamic performance views in heirarichal query.
+--
+WITH  sess as 
+  ( select  /*+ RULE  NO_MERGE */ s1.* from gv$session s1
+  )
+, locks as
+   (select  /*+ RULE NO_MERGE */ * 
+     from gv$lock where lmode = 0 
+   --AND ( lmode = 0 OR  (lmode > 0 AND block > 0))
+ )
+SELECT /*+ RULE */ 
+       s.inst_id
+     , DECODE(level
+           ,1 , s.sid || ' (Blocker)'    
+     , ' ' || LPAD('-',(level-1)*4,'|---') || '> ' || s.sid 
+     ) 
+    sid
+     , s.status
+     , NVL2(lt.type,lt.type || ': ' , NULL)|| lt.name lock_name
+     , DECODE(l.lmode
+              ,0,'None'
+              ,1,'Null'
+              ,2,'Row-S (SS)'
+              ,3,'Row-X (SX)'
+              ,4,'Share (S)'
+              ,5,'S/Row-X (SSX)'
+              ,6,'Excl (X)'
+              , l.lmode
+              )     lmode
+     , DECODE(l.request
+              ,0,'None'
+              ,1,'Null'
+              ,2,'Row-S (SS)'
+              ,3,'Row-X (SX)'
+              ,4,'Share (S)'
+              ,5,'S/Row-X (SSX)'
+              ,6,'Excl (X)'
+              , l.request
+              )     request
+     , s.username
+     , s.sql_id
+     , s.machine
+     , s.osuser
+     , s.process
+     , s.program
+     , s.event
+FROM  sess s
+      LEFT OUTER JOIN locks l ON  l.inst_id = s.inst_id AND l.sid     = s.sid 
+      LEFT OUTER JOIN v$lock_type lt ON l.type  = lt.type 
+WHERE (  s.blocking_session IS NOT NULL
+         OR exists (select 1 from sess s2 where s2.blocking_instance = s.inst_id and s2.blocking_session = s.sid)
+       )
+CONNECT BY PRIOR s.inst_id = s.blocking_instance
+       AND PRIOR s.sid     = s.blocking_session
+START WITH s.blocking_session IS NULL
+;
+
+
+@@footer