On Sunday, November 26, 2023, PG Doc comments form <
noreply@postgresql.org> wrote:
The following documentation comment has been logged on the website:
Page: https://www.postgresql.org/docs/16/manage-ag-tablespaces.html
Description:
While reading the table-space documentation
https://www.postgresql.org/docs/16/manage-ag-tablespaces.html the
information I was looking for was not included. The page invites feedback,
so I though I would share. I was specifically looking for information on
maximum table-space size and whether there is a use-case in which you would
create several table-spaces to split your tables / indexes logically. I am
from an Oracle world and it is normal for me to think about creating
multiple table-spaces for groups of tables and placing a size on the
table-space so that space does not extend and fill the o/s disk-space. It
would be nice for the documentation to include information about this topic.
Even if it is says that these factors I should not worry about as postgres
handles them.
We tend to avoid documenting things that don’t exist. So the lack of a documented limit or any syntax to define one means no limit exists.
As for usage patterns, there is a note I thought (maybe wiki FAQ?) that since the only thing you get with a tablespace is another root level storage place having more than one per disk really serves no purpose.
David J.