2026-03-12 20:23:15

tpt/lm.sql

@@ -0,0 +1,47 @@
+-- Copyright 2018 Tanel Poder. All rights reserved. More info at http://tanelpoder.com
+-- Licensed under the Apache License, Version 2.0. See LICENSE.txt for terms & conditions.
+
+column lm_parent_name heading LATCH_NAME format a50
+column lm_where heading WHERE format a50
+column lm_label heading LABEL format a30
+column lm_nwfail_count heading NOWAITFAILS format 999999999999
+column lm_sleep_count heading SLEEPS format 999999999999
+column lm_wtr_sleep_count heading WAITER_SLEEPS format 999999999999
+
+PROMPT Querying V$LATCH_MISSES....
+
+--select 
+--	t1.ksllasnam	lm_parent_name, 
+--	t2.ksllwnam	lm_where, 
+----	t1.kslnowtf, 
+----	t1.kslsleep, 
+----	t1.kslwscwsl, 
+----	t1.kslwsclthg,
+--	t2.ksllwlbl	lm_label
+--from
+--	x$ksllw t2,
+--	x$kslwsc t1
+--where 
+--	t2.indx = t1.indx
+--and	lower(t1.ksllasnam) like lower('%&1%')
+--/
+
+select * from (
+	select 
+	        rownum-1 loc#,
+	        to_char(rownum-1, 'XXXX') hexl#,
+		parent_name	lm_parent_name,
+		"WHERE"		lm_where,
+		nwfail_count	lm_nwfail_count,
+		sleep_count	lm_sleep_count,
+    wtr_slp_count lm_wtr_sleep_count,
+    longhold_count
+	from
+		v$latch_misses
+)
+where
+	lower(lm_parent_name) like lower('%&1%')
+or	lower(lm_where) like lower('%&1%')
+/
+
+