Postgres 9.5 pg_prewarm

Hi all,

I have just migrated my db to PG 9.5, an I would like to use pg_prewarm
contrib function, but when I want to use it, I have an error message I
don't understand :

It should do this :

1. postgres=# select pg_prewarm('foo');
2. pg_prewarm
3. ------------
4. 113278
5. (1 row)

but it do that :

psql (9.5.0)
postgres=# create extension pg_prewarm;
CREATE EXTENSION

db=# select pg_prewarm('accounts');
ERROR: function pg_prewarm(unknown) does not exist
LINE 1: select pg_prewarm('accounts');
^
HINT: No function matches the given name and argument types. You might
need to add explicit type casts.

(table accounts exists)

Does anyone have an idea ?

Thanks,
thomas

--

Thomas