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RE: SQL Area Reloads

From: Tim Gorman <tim_at_sagelogix.com>
Date: Thu, 11 Dec 2003 08:39:28 -0800
Message-ID: <F001.005D98F6.20031211083928@fatcity.com>


OK, fair enough.

Something to consider: the concept of "reload" probably also includes the concept of "initial/first load". I don't know whether this is the case for certain, but one way to check might be to query the number of items in the V$SQLAREA (i.e. "select count(*) from v$sqlarea"). After all, each of those entries had to be loaded (a.k.a. "reloaded") at least once, I think...

> Shared pool is free all the time.
> There are no DDLs executed, no analyze or no package
> compiles still there are SQL AREA reloads.
> The database is on 9i RAC. The reloads are appearing on
> RAC instances.
> -----Original Message-----
> Sent: Wednesday, December 10, 2003 11:05 PM
> To: Multiple recipients of list ORACLE-L
>
>
> Sure, it's free now. But has that always been the case?
>
>
> on 12/10/03 3:14 PM, Ashish Sahasrabudhe at
> asahasrabudhe_at_weightwatchers.com wrote:
>
>
>
> The statspack report is showing 10,684 reload for SQL AREA
> with 2.2% misses.
>
> ==========================================================
> ================== ======
> Library Cache Activity for DB: MAIN Instance: MAIN
> Snaps: 18089 -18090 ->"Pct Misses" should be very low
>
> Get Pct Pin Pct
> Invali-
> Namespace Requests Miss Requests Miss
> Reloads dations
> --------------- ------------ ------ -------------- ------
> ---------- --------
> BODY 12,186 0.0 12,186 0.0
> 0 0
> CLUSTER 95 0.0 10 0.0
> 0 0
> INDEX 466 0.0 461 0.0
> 0 0
> SQL AREA 44,142 0.1 500,987 2.2
> 10,684 0
> TABLE/PROCEDURE 208,498 0.1 584,219 0.0
> 1 0
> TRIGGER 2,746 0.0 2,746 0.0
> 0 0
> ==========================================================
> ================== ======
>
> The 250 MB of shared pool is free. Why would it cause
> reloads if there is so much
> free space available?
>
> Any help is appreciated.
>
> Ashish
>
>
>
>
>
>
>

-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.net
-- 
Author: Tim Gorman
  INET: tim_at_sagelogix.com

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Received on Thu Dec 11 2003 - 10:39:28 CST

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