Oracle Top Latches Monitor
Displays latch statistics ordered by highest misses, including gets, misses, sleeps, and spin gets. Useful for identifying latch contention and diagnosing concurrency or performance bottlenecks.
oraclesqlperformance-tuningv1.0.0
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-- -----------------------------------------------------------------------------------
-- File Name : https://oracle-base.com/dba/monitoring/top_latches.sql
-- Author : Tim Hall
-- Description : Displays information about the top latches.
-- Requirements : Access to the V$ views.
-- Call Syntax : @top_latches
-- Last Modified: 15-JUL-2000
-- -----------------------------------------------------------------------------------
SET LINESIZE 200
SELECT l.latch#,
l.name,
l.gets,
l.misses,
l.sleeps,
l.immediate_gets,
l.immediate_misses,
l.spin_gets
FROM v$latch l
WHERE l.misses > 0
ORDER BY l.misses DESC;