On Sun, 2007-07-22 at 17:54 +0200, Florian G. Pflug wrote: > 1) It seems that the btree code sends out relcache > invalidation msgs during normal operation > (No DDL statements are executed). This lets any > simple flush-all-caches-if-ddl-was-execute scheme > fail.
Cache invalidation is uniquely associated with these WAL record types: XLOG_BTREE_NEWROOT XLOG_BTREE_INSERT_META XLOG_BTREE_DELETE_PAGE_META None of those things happen with any real frequency in most use cases. We don't increase or reduce the number of levels of an index very frequently. -- Simon Riggs EnterpriseDB http://www.enterprisedb.com ---------------------------(end of broadcast)--------------------------- TIP 9: In versions below 8.0, the planner will ignore your desire to choose an index scan if your joining column's datatypes do not match
