Обсуждение: Least and most accessed tables in a database..

Поиск
Список
Период
Сортировка

Least and most accessed tables in a database..

От
Rajesh Kumar Mallah
Дата:
Hi ,

Is there anyway to know which tables are least/most  accessed
in a database?

My original problem is that there are too my stray tables in my database
which i want to get rid of. i thought the tables which are least accessed
may be a good candidate for deletion.

just a thought does pg_statio_user_tables help ?

regds
mallah.




--
Rajesh Kumar Mallah,
Project Manager (Development)
Infocom Network Limited, New Delhi
phone: +91(11)6152172 (221) (L) ,9811255597 (M)

Visit http://www.trade-india.com ,
India's Leading B2B eMarketplace.

Re: Least and most accessed tables in a database..

От
Rajesh Kumar Mallah
Дата:

my GUC is configured like this:

#
#       Access statistics collection
#
stats_start_collector = true
stats_reset_on_server_start = true
stats_command_string = true
stats_row_level = true
#stats_block_level = false

how come there is not a single row in pg_statio_user_tables
any of the stat is having a non zero value ?

tradein_clients=#  SELECT schemaname,relname,heap_blks_read,heap_blks_hit
from  pg_statio_user_tables where ( heap_blks_read > 0 or heap_blks_hit >0 or
idx_blks_read >0 or idx_blks_hit > 0 or toast_blks_read > 0 or toast_blks_hit
> 0 or tidx_blks_read > 0 or tidx_blks_hit > 0 );

+------------+---------+----------------+---------------+
| schemaname | relname | heap_blks_read | heap_blks_hit |
+------------+---------+----------------+---------------+
+------------+---------+----------------+---------------+
(0 rows)


Regds
Mallah.


On Wednesday 19 Mar 2003 4:38 pm, Rajesh Kumar Mallah wrote:
> Hi ,
>
> Is there anyway to know which tables are least/most  accessed
> in a database?
>
> My original problem is that there are too my stray tables in my database
> which i want to get rid of. i thought the tables which are least accessed
> may be a good candidate for deletion.
>
> just a thought does pg_statio_user_tables help ?
>
> regds
> mallah.
>
>
>
>
> --
> Rajesh Kumar Mallah,
> Project Manager (Development)
> Infocom Network Limited, New Delhi
> phone: +91(11)6152172 (221) (L) ,9811255597 (M)
>
> Visit http://www.trade-india.com ,
> India's Leading B2B eMarketplace.
>
> ---------------------------(end of broadcast)---------------------------
> TIP 5: Have you checked our extensive FAQ?
>
> http://www.postgresql.org/docs/faqs/FAQ.html
>
>

--
Rajesh Kumar Mallah,
Project Manager (Development)
Infocom Network Limited, New Delhi
phone: +91(11)6152172 (221) (L) ,9811255597 (M)

Visit http://www.trade-india.com ,
India's Leading B2B eMarketplace.

Re: Least and most accessed tables in a database..

От
Tom Lane
Дата:
Rajesh Kumar Mallah <mallah@trade-india.com> writes:
> #stats_block_level = false

> how come there is not a single row in pg_statio_user_tables
> any of the stat is having a non zero value ?

statio is block-level statistics, no?

            regards, tom lane

Re: Least and most accessed tables in a database..

От
Дата:
yes it does work after making it true.
but am i in the right track in solving my problem?

regds
mallah.


> Rajesh Kumar Mallah <mallah@trade-india.com> writes:
>> #stats_block_level = false
>
>> how come there is not a single row in pg_statio_user_tables
>> any of the stat is having a non zero value ?
>
> statio is block-level statistics, no?
>
>             regards, tom lane
>
> ---------------------------(end of broadcast)--------------------------- TIP 4: Don't 'kill -9'
> the postmaster



-----------------------------------------
Get your free web based email at trade-india.com.
   "India's Leading B2B eMarketplace.!"
http://www.trade-india.com/