mercredi 29 février 2012
Slony 1.2: Switch off autovacuum for Slony tables and pg_listerner,pg_statistic
Par david techer, mercredi 29 février 2012 à 11:42 :: Réplication PostgreSQL
It is well advised to siwtch off autovacuum for a few tables when using Slony 1.2.x.
Have a look at http://slony.info/documentation/1.2/maintenance.html (Section 6.1 Interaction with PostgreSQL autovaccuum).
Here are the SQL query-- Slony tables
-- NOTICE: IN THE LINE BELOW, REPLACE clustername by the real cluster name.
INSERT INTO pg_catalog.pg_autovacuum
(vacrelid, enabled, vac_base_thresh, vac_scale_factor, anl_base_thresh, anl_scale_factor, vac_cost_delay, vac_cost_limit, freeze_min_age, freeze_max_age)
SELECT oid, 'f', -1, -1, -1, -1, -1, -1, -1, -1 FROM pg_catalog.pg_class WHERErelnamespace = (SELECT OID FROM pg_namespace WHERE nspname = '_' || 'clustername') AND relhasindex;
-- System tables
INSERT INTO pg_catalog.pg_autovacuum
(vacrelid, enabled, vac_base_thresh, vac_scale_factor, anl_base_thresh, anl_scale_factor, vac_cost_delay, vac_cost_limit, freeze_min_age, freeze_max_age)
SELECT oid, 'f', -1, -1, -1, -1, -1, -1, -1, -1 FROM pg_catalog.pg_class WHERE relname in ('pg_listener','pg_statistic') and relnamespace=(select oid from pg_namespace where nspname='pg_catalog') ;
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See 
To be honest I don't know from which revision way of compiling Xen has been changed. Usually once a week, I used to compiling Xen in the usual way.