Hi, On 10 January 2012 09:16, Jason Buberel <jason@xxxxxxxxxxxxxxxxx> wrote: > We have lots of them, they are much smaller than the tables, and that will > allow us to do the migrations more incrementally. In your case I would keep data and indexes on different table spaces (and lower random_page_cost). > One area where the documentation is not very detailed - What are the side > effects and/or constraints put in place while an index is being moved? I > assume that the index will not be available to the query planner/engine > during that time period. Are there other ways in which the table (and other > indices) are affected or locked? yes, you are right there is not too much about "alter index" locking in the docs. When I did this last time (PG 8.4) 'alter index' acquired 'ACCESS EXCLUSIVE' lock. -- Ondrej Ivanic (ondrej.ivanic@xxxxxxxxx) -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general