Re: pg_hint_tables

On 9/30/25 12:51, Wong, Kam Fook (TR Technology) wrote:
> I am trying to use pg_hint_tables in AWS Aurora Postgres. I changed the Postgres parameter "pg_hint_plan.enable_hint_table = 1". Then I logout but can't login anymore with the following error message.

To be clear it is pg_hint_plan not pg_hint_tables?

>
> “postgres(at)postgres:[2719]:ERROR: relation "hint_plan.hints" does not exist at character 21”.
>
> I undo the changes, log back in. Can't find a good resources that lead me to the root cause. So I try a few other things, see below. But no luck. Any guidance or help is greatly appreciated.

From here:

https://github.com/ossc-db/pg_hint_plan/blob/master/docs/installation.md

Did you do?:

"
Loading pg_hint_plan

pg_hint_plan does not require CREATE EXTENSION. Loading it with a LOAD
command will activate it and of course you can load it globally by
setting shared_preload_libraries in postgresql.conf. Or you might be
interested in ALTER USER SET/ALTER DATABASE SET for automatic loading in
specific sessions.

postgres=# LOAD 'pg_hint_plan';
LOAD
"
>
> ALTER EXTENSION pg_hint_plan UPDATE TO '1.4';
> GRANT SELECT, INSERT, UPDATE, DELETE ON hint_plan.hints TO PUBLIC;
> GRANT USAGE ON SCHEMA hint_plan TO PUBLIC;
>
> Thank you
> Kam Fook Wong
--
Adrian Klaver
adrian(dot)klaver(at)aklaver(dot)com