2026-03-12 20:23:15

timhall/monitoring/user_hit_ratio.sql

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+-- -----------------------------------------------------------------------------------
+-- File Name    : https://oracle-base.com/dba/monitoring/user_hit_ratio.sql
+-- Author       : Tim Hall
+-- Description  : Displays the Cache Hit Ratio per user.
+-- Requirements : Access to the V$ views.
+-- Call Syntax  : @user_hit_ratio
+-- Last Modified: 15/07/2000
+-- -----------------------------------------------------------------------------------
+SET LINESIZE 500
+COLUMN "Hit Ratio %" FORMAT 999.99
+
+SELECT a.username "Username",
+       b.consistent_gets "Consistent Gets",
+       b.block_gets "DB Block Gets",
+       b.physical_reads "Physical Reads",
+       Round(100* (b.consistent_gets + b.block_gets - b.physical_reads) /
+       (b.consistent_gets + b.block_gets),2) "Hit Ratio %"
+FROM   v$session a,
+       v$sess_io b
+WHERE  a.sid = b.sid
+AND    (b.consistent_gets + b.block_gets) > 0
+AND    a.username IS NOT NULL;