I have an issue with the add foreign key constraint which goes for waiting and locks other queries as well.
ALTER TABLE ONLY holding_positions ADD CONSTRAINT holding_positions_stock_id_fkey FOREIGN KEY (stock_id) REFERENCES stocks (stock_id) MATCH SIMPLE ON UPDATE NO ACTION ON DELETE NO ACTION; The holding_positions table has no data in it as yet. ps aux | grep postgres postgres 5855 0.8 1.6 346436 271452 ? Ss 16:34 0:07 postgres: abc stocks 192.100.100.111(60308) SELECT waiting postgres 6134 0.0 0.0 346008 4184 ? Ss 16:44 0:00 postgres: xyz stocks 192.100.100.222(34604) ALTER TABLE waiting Any suggestions would be appreciated. Roopa