Memory issue for inheritance tables.

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



 

One parent table, having 100 child tables.
In this scenario we observed that delete and update are taking more memory for preparing a plan

If the system under peak i am getting out of memory issue.

i.e
Select on parent table is using memory -  331456 in message context
Delete on parent table is using memory - 3746432 in message context

Delete on single child table is using memory - 8800 in message context
Select on single child table is using memory - 9328 in message context

For 250 child tables
        Select on parent table is using memory -   810864 in message context
        Delete on parent table is using memory - 21273088 in message context

I had seen the plans for both delete & select on parent table almost same.
why this much of memory increase in message context for delete and update operation.

Regards,
Hari babu.


[Postgresql General]     [Postgresql PHP]     [PHP Users]     [PHP Home]     [PHP on Windows]     [Kernel Newbies]     [PHP Classes]     [PHP Books]     [PHP Databases]     [Yosemite]

  Powered by Linux