On 6/17/25 09:20, Marcin Gozdalik wrote: > Hi > > I am using PostgreSQL 17 and would like to take advantage of performance > and stability across OS updates of builtin C.UTF-8 locale. > I have a cluster with a DB created with en_US.UTF-8 libc locale. I would > like to migrate the DB to C.UTF-8. Ideally there'd be an "ALTER DATABASE > ... SET LOCALE ..." command that would take care of it but it seems it > doesn't exist. I was thinking that I could change the collation of all > TEXT/CHAR/VARCHAR columns in all the tables to pg_c_utf8, REINDEX all > those columns and change the default locale in the pg_database table. > > Is it a sensible plan? Am I missing some steps? I can't find any > reference to anybody doing that before or discouraging it.
How big a database are we talking about?
To me it would seem easier to create a new database with new locale and do either a pg_dump/pg_restore or logical replication to the new instance. Of course this may depend on the answer to the question above.
