2026-03-12 20:23:15

timhall/10g/event_histogram.sql

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+-- -----------------------------------------------------------------------------------
+-- File Name    : https://oracle-base.com/dba/10g/event_histogram.sql
+-- Author       : Tim Hall
+-- Description  : Displays histogram of the event waits times.
+-- Requirements : Access to the V$ views.
+-- Call Syntax  : @event_histogram "(event-name)"
+-- Last Modified: 08-NOV-2005
+-- -----------------------------------------------------------------------------------
+
+SET VERIFY OFF
+COLUMN event FORMAT A30
+
+SELECT event#,
+       event,
+       wait_time_milli,
+       wait_count
+FROM   v$event_histogram
+WHERE  event LIKE '%&1%'
+ORDER BY event, wait_time_milli;
+
+COLUMN FORMAT DEFAULT
+SET VERIFY ON