Re: v$sql - executions vs loads vs invalidations

From: Jonathan Lewis <>
Date: Tue, 1 May 2012 11:58:32 +0100
Message-ID: <763597603F7C49F597633D5F54577B16_at_Primary>

  • Original Message ----- From: "GG" <> To: <> Cc: "Oracle-L Group" <> Sent: Tuesday, May 01, 2012 11:53 AM Subject: Re: v$sql - executions vs loads vs invalidations

W dniu 2012-05-01 11:41, Gerry Miller pisze:

>LOADS: 2794
You've never mentioned DB version :) but basically looks like statements are only parsed and never executed (application issue ?). You got invalidation because some dependent objects are 'manipulated' via (grants, ddls, stats gathering and so) , loads are because of flushes which could be caused by shared pool free space pressure .
For better understanding we need some info about sga size and allocations and ora-4031 related dumps .
Meantime You can check

Depending on version, invalidation may zero out the execution stats.

Earlier 10g versions, for example, would invalidate ALL cursors relating to a global temporary table if ANY user truncated their private copy of that GTT - resulting in lots of library cache invalidation for everyone all the time - and lots of cursors with high invalidation and reload counts, but zero execution stats


Jonathan Lewis
Oracle Core (Apress 2011)

Received on Tue May 01 2012 - 05:58:32 CDT

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