2026-03-12 20:23:15

idev/perf_sga_usage.sql

@@ -0,0 +1,37 @@
+-- +----------------------------------------------------------------------------+
+-- |                          Jeffrey M. Hunter                                 |
+-- |                      jhunter@idevelopment.info                             |
+-- |                         www.idevelopment.info                              |
+-- |----------------------------------------------------------------------------|
+-- |      Copyright (c) 1998-2011 Jeffrey M. Hunter. All rights reserved.       |
+-- |----------------------------------------------------------------------------|
+-- | DATABASE : Oracle                                                          |
+-- | FILE     : perf_sga_usage.sql                                              |
+-- | CLASS    : Tuning                                                          |
+-- | PURPOSE  : Report on all components within the SGA.                        |
+-- | NOTE     : As with any code, ensure to test this script in a development   |
+-- |            environment before attempting to run it in production.          |
+-- +----------------------------------------------------------------------------+
+
+SET LINESIZE 145
+SET PAGESIZE 9999
+SET FEEDBACK off
+SET VERIFY   off
+
+COLUMN bytes   FORMAT  999,999,999
+COLUMN percent FORMAT  999.99999
+
+break on report
+
+compute sum of bytes on report
+compute sum of percent on report
+
+SELECT
+    a.name
+  , a.bytes
+  , a.bytes/(b.sum_bytes*100)  Percent  
+FROM sys.v_$sgastat a
+   , (SELECT SUM(value)sum_bytes FROM sys.v_$sga) b 
+ORDER BY bytes DESC
+/
+