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Home -> Community -> Mailing Lists -> Oracle-L -> Re: RE: "SQL AREA" and "LIBARARY CACHE" size?
Hi Prem,
I Think you are also doing the same mistake that I have done yesterday,
that was causing so much confusion.
I had earlier calculated the library cache and sql area size from X$ksmsp.
Please check the size of these component in x$ksmss.
WHat is difference in both x$ view is little bit confusing.
ORACLE try to calcluate SGASTAT from V$SGASTAT based on below mentioned query:
'',
ksmssnam,
ksmsslen
'shared pool',
ksmssnam,
sum(ksmsslen)
group by inst_id, 'shared pool', ksmssnam
union all
select inst_id,
'large pool',
ksmssnam,
sum(ksmsslen)
group by inst_id, 'large pool', ksmssnam
union all
select inst_id,
'java pool',
ksmssnam,
ksmsslen
'shared pool',
ksmssnam,
sum(ksmsslen)
group by inst_id, 'shared pool', ksmssnam
SQL> l
select
ksmchcom contents,
sum(ksmchsiz) total
from
sys.x$ksmsp
where
inst_id = userenv('Instance')
group by ksmchcom
With Regards,
Manoj Kumar Jha
C-56 , Phase-2
NOIDA -201305, UP(INDIA)
Tata Consultancy Services
Ph No: (+91-120) 4461001 ext : 1037 (Off.)
Mobile No : 9810090974
A transcendentalist engaged in auspicious activities does not meet with
destruction either in this world or in the spiritual world; one who does
good,
is never overcome by evil.
Prem Khanna J
<jprem_at_kssnet To: Multiple recipients of list ORACLE-L <ORACLE-L_at_fatcity.com>
.co.jp> cc:
Sent by: Subject: Re: RE: "SQL AREA" and "LIBARARY CACHE" size?
ml-errors_at_fat
city.com
09/26/03
01:39 PM
Please
respond to
ORACLE-L
Hi Manoj,
this is the statistics i got from one of my instance.
sql area 225 MB
library cache 112 MB
I was also confused as u were [ i didn't notice this so far ]. but reading the replies of Tanel & Steve once again:
<tanel>
But what Steve meant (please correct me if I'm wrong), is that operations
on
sql areas are managed by library cache structures (library cache latch, KGL
manager, lib cache hash table, etc), so sql area is dependent on library
cache, despite the fact they both have memory allocated directly from
shared pool.
</tanel>
from this (and as per the docs) i understand that sql area is a subset of
library cache.
perhaps,what "subset" means is:
in terms of the control library cache has over sql area and not in terms
of memory allocated.
is my understanding correct, Tanel ?
<steve>
My best guess at the moment is that when new recreatable chunks are first
unpinned,
they go onto the transient list, and then when they have been reused, they
go back
onto the recurrent list.
</steve>
..and reading this post by Steve,i feel there is something more(a lot) that
we need to
know/understand to discuss about this.
Can Steve/Tanel/List explain me what is transient chunk & recurrent chunk ?
Regards,
Jp.
P.S.Thanx Naveen.
-- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: Prem Khanna J INET: jprem_at_kssnet.co.jp Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services --------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing). DISCLAIMER: The information contained in this message is intended only and solely for the addressed individual or entity indicated in this message and for the exclusive use of the said addressed individual or entity indicated in this message (or responsible for delivery of the message to such person) and may contain legally privileged and confidential information belonging to Tata Consultancy Services. It must not be printed, read, copied, disclosed, forwarded, distributed or used (in whatsoever manner) by any person other than the addressee. Unauthorized use, disclosure or copying is strictly prohibited and may constitute unlawful act and can possibly attract legal action, civil and/or criminal. The contents of this message need not necessarily reflect or endorse the views of Tata Consultancy Services on any subject matter. Any action taken or omitted to be taken based on this message is entirely at your risk and neither the originator of this message nor Tata Consultancy Services takes any responsibility or liability towards the same. Opinions, conclusions and any other information contained in this message that do not relate to the official business of Tata Consultancy Services shall be understood as neither given nor endorsed by Tata Consultancy Services or any affiliate of Tata Consultancy Services. If you have received this message in error, you should destroy this message and may please notify the sender by e-mail. Thank you. -- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: ManojKr Jha INET: jmanoj_at_delhi.tcs.co.in Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services --------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).Received on Fri Sep 26 2003 - 05:19:25 CDT
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