pg_buffercache.sql

PostgreSQL 8.2中增加了很多企业用户所需要的功能和性能上的提高,其开发团队说,该版本将加速更多企业向该数据库移植.核心开发成员之一Bruce Momjian表示,在新版PostgreSQL

-- Adjust this setting to control where the objects get created.
BEGIN;
SET search_path = public;

-- Register the function.
CREATE OR REPLACE FUNCTION pg_buffercache_pages()
RETURNS SETOF RECORD
AS '$libdir/pg_buffercache', 'pg_buffercache_pages'
LANGUAGE C;

-- Create a view for convenient access.
CREATE VIEW pg_buffercache AS
	SELECT P.* FROM pg_buffercache_pages() AS P
 	(bufferid integer, relfilenode oid, reltablespace oid, reldatabase oid, 
 	 relblocknumber int8, isdirty bool);
 
-- Don't want these to be available at public.
REVOKE ALL ON FUNCTION pg_buffercache_pages() FROM PUBLIC;
REVOKE ALL ON pg_buffercache FROM PUBLIC;

COMMIT;