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RE: "SQL AREA" and "LIBARARY CACHE" size?

From: ManojKr Jha <jmanoj_at_delhi.tcs.co.in>
Date: Thu, 25 Sep 2003 03:04:44 -0800
Message-ID: <F001.005D10AB.20030925030444@fatcity.com> 






Hi Steve,



Sorry for it, but I want to correct one thing that is ,
it is Libarray cache which is subset of SQL area which intern subset of
shared pool.




With Regards,


Manoj Kumar Jha






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.





                                                                                                                      
                    "Steve Adams"                                                                                     
                    <steve.adams_at_ixo        To:     Multiple recipients of list ORACLE-L <ORACLE-L_at_fatcity.com>       
                    ra.com.au>              cc:                                                                       
                    Sent by:                Subject:     RE: "SQL AREA" and "LIBARARY CACHE" size?                    
                    ml-errors_at_fatcit                                                                                  
                    y.com                                                                                             
                                                                                                                      
                                                                                                                      
                    09/25/03 03:24                                                                                    
                    PM                                                                                                
                    Please respond                                                                                    
                    to ORACLE-L                                                                                       
                                                                                                                      
                                                                                                                      








Hi Manoj,



Although the stats are confused, the "SQL area" is in fact a subset of the
library cache. Cursors are cached in the library cache as namespace 0.



You can exercise limited control over the memory usage by marking objects
for keeping with DBMS_SHARED_POOL.KEEP. Otherwise, the retention of chunks
and thus the relative size of these and other shared pool areas depends
entirely how recently objects have been used, because they all share the
same LRU mechanisms (although there is an additional subordinate LRU
mechanism for the dictionary cache).



@   Regards,

@   Steve Adams

@   http://www.ixora.com.au/         - For DBAs

@   http://www.christianity.net.au/  - For all




-----Original Message-----


ManojKr Jha


Sent: Thursday, 25 September 2003 6:35 PM
To: Multiple recipients of list ORACLE-L





How the ORACLE distribute and mange the size of variouse component in
shared_pool....?


There should be some criteria on which it disribute its toatl available
memory to these component.



Steve Adams/Jonathan, do you have any about these?



Also are there any way to control the number and type  of chunks in
different buckets.


If these can be manage I hope that lots of seriouse problem related to
shared pool fragmentation and other issues can be easilly avoided?




With Regards,


Manoj Kumar Jha









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.










                    "bhabani s pradhan"

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

                    Sent by:                   Subject:     Re: "SQL AREA"
and "LIBARARY CACHE" size?
                    ml-errors_at_fatcity.c

                    om





                    09/25/03 01:04 PM

                    Please respond to

                    ORACLE-L













You cannot control the sizes of sql area and library cache
individually



Regards





On Thu, 25 Sep 2003 ManojKr Jha wrote :

>
>
>
>Hi,
>
>Any body have any idea about how to control the size of "library
>cache" and
>"sql area" in shared_pool?
>
>With Regards,
>Manoj Kumar Jha
>
----------------------------------------------------------------------------

------------------------

>
>
>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.


>







>
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>   INET: jmanoj_at_delhi.tcs.co.in
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Author: ManojKr Jha
  INET: jmanoj_at_delhi.tcs.co.in

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in this message (or responsible for delivery of the message to such person)
and may contain legally privileged and confidential information belonging
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person other than the addressee. Unauthorized use, disclosure or copying is
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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

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Received on Thu Sep 25 2003 - 06:04:44 CDT












Original text of this message













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