RE: SGA info.

From: Viraj Luthra <viraj999_at_lycos.com>
Date: Sun, 12 Aug 2001 16:52:54 -0700
Message-ID: <F001.00368833.20010812165023@fatcity.com>

Hello,

I am running oracle 8.1.5.0.0 on hp11.

If I select from V$sga I get at least 18104 more than what I see in v$sgastat. Therefore I wanted to know why the figures are different and what statistic in v$sgastat is not counted, and therefore the figure in v$sgastat is low??

I am getting some thing like this:-

select sum(value) from v$sga;

35059816

select sum(bytes) from v$sgastat;

35041712

Please comment if you can, thanks in advance.

rgds,

raja

--

On Thu, 09 Aug 2001 10:25:21  
 Seema Singh wrote:


>Hermanto

>which version of oracle u r running?Just see following output

>SVRMGR> connect internal;

>Connected.

>SVRMGR> select sum(value) from v$sga;

>SUM(VALUE)

>----------

>1033101472

>1 row selected.

>SVRMGR> select sum(bytes) from v$sgastat;

>SUM(BYTES)

>----------

>1033044248

>1 row selected.

>SVRMGR> show sga

>Total System Global Area                       1033101472 bytes

>Fixed Size                                          73888 bytes

>Variable Size                                   537395200 bytes

>Database Buffers                                491520000 bytes

>Redo Buffers                                      4112384 bytes

>If u see all three output you can see the diffrence.The correct view to 

>check size of sga is v$sga.

>Hope this will help u.

>Thanks

>-Seema

>

>

>

>>From: Hermanto P <hermanto_p_at_aprilasia.com>

>>Reply-To: ORACLE-L_at_fatcity.com

>>To: Multiple recipients of list ORACLE-L <ORACLE-L_at_fatcity.com>

>>Subject: RE: SGA info.

>>Date: Wed, 08 Aug 2001 20:51:10 -0800

>>

>>Raja,

>>if i do what you do..the value is same.

>>i am not sure if you said the value between v$sgastat and v$sga is

>>different.

>>

>>SVRMGR> select sum(value) from v$sga;

>>SUM(VALUE)

>>----------

>>   64046072

>>1 row selected.

>>SVRMGR> select sum(bytes) from v$sgastat;

>>SUM(BYTES)

>>----------

>>   64046072

>>1 row selected.

>>SVRMGR>

>>

>>Warm Regards,

>>

>>Hermanto P

>>Application Engineer

>>PT Riau Andalan Pulp And Paper - IT/IS Dept.

>>Phone : (0761) - 491147 / 491354

>>HP        : 0812-752-3092

>>"Dream as if you'll live forever, live as if you'll die today"

>>

>>

>>

>>

>>-----Original Message-----

>>Sent: Thursday, August 09, 2001 11:30 AM

>>To: Multiple recipients of list ORACLE-L

>>

>>

>>Hello gurus,

>>

>>I am not able to understand 1 thing:-

>>

>>1. If I do :-

>>

>>select sum(bytes) from v$sgastat;

>>it gives me the SGA as :- 35041712

>>

>>2. But if I do :-

>>

>>select sum(value) from v$sga I get:-  35059816

>>

>>There is a difference of 18104 between 2 figures.

>>

>>Which 1 should I trust? which gives me the correct value of SGA?

>>

>>thanks

>>

>>rdgs,

>>

>>raja

>>

>>

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>>--

>>Author: Viraj Luthra

>>   INET: viraj999_at_lycos.com

>>

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>>Author: Hermanto P

>>   INET: hermanto_p_at_aprilasia.com

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>Author: Seema Singh

>  INET: oracledbam_at_hotmail.com

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-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.com
-- 
Author: Viraj Luthra
  INET: viraj999_at_lycos.com

Fat City Network Services    -- (858) 538-5051  FAX: (858) 538-5051
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Received on Sun Aug 12 2001 - 18:52:54 CDT