mark wrote: > I defined a table using 1000 partition tables. > When I deleted or updated this table. It used a lot of memory and > postmaster process is killed by OS. When I defined the same table > using 100 partition tables. It can normally be updated and deleted. > what is reason of this?
Postgres 9.5 is not prepared to deal with thousands of partitions.
You can try the improved partitioning with the new syntax introduced in Postgres 10 -- you may have better luck there. Please test it. If it still doesn't work, let us know in detail what you tested and how it failed.