Re: Large number of partitions of a table

EXPLAIN plans are going to be hilariously gigantic, which means that query planning would take a loooong time,  And the query planner (in v12, at least) can generate some pretty bad plans in partitioned tables; I bet there are edge cases in the QP code that don't work well with 10000 partitions and 50000 indices.

These things sometimes happen. On the oracle-l, there is a thread in progress about a generated SQL with 130,000 lines which fails parsing because parsing exhausts the available memory. In such cases, I am less inclined to look for a fault with the database software and more inclined to inflict an unusual and cruel punishment on whoever has designed the data model.

-- 
Mladen Gogala
Database Consultant
Tel: (347) 321-1217
https://dbwhisperer.wordpress.com