On Wed, Feb 1, 2012 at 12:29 AM, Rosser Schwarz <rosser.schw...@gmail.com> wrote: > Remember, DDL is transactional in PostgreSQL. In principle, you > should be able to drop the index, do your inserts, and re-create the > index without affecting concurrent users, if you do all of that inside > an explicit transaction. Doing the inserts inside a transaction may > speed them up, as well.
Creating an index requires an update lock on the table, and an exclusive lock on the system catalog. Even though with "CONCURRENTLY" it's only for a short while. So it does affect concurrent users. -- Sent via pgsql-performance mailing list (pgsql-performance@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
