Hi All; I'm preparing to fire up WAL archiving on 8 production servers We will follow up with implementing a warm standby scenariio. Does anyone have any thoughts per how to maximize performance, yet minimize the potential for data loss assuming we were not able to retrieve the final un-archived WAL segment from the original pg_xlog dir in the case of a crash? Specifically, I wonder if there are some general rules of thought per tuning wal_buffers, checkpoint_segments and friends... Currently all servers have the following settings: wal_buffers = 24 checkpoint_segments = 32 Thanks in advance /Kevin ---------------------------(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