Hi, On Thu, Jun 09, 2005 at 02:11:22PM +0100, Richard Huxton wrote: > > > >To my question: I found the parameter "stats_reset_on_server_start" > >which is set to true by default. Why did you choose this (and not false) > >and what are the impacts of changeing it to false? I mean, as long as I > >understood it, each query or statements generates some statistic data > >which is used by the optimizer (or anything equal) later on. So in my > >oppinion, wouldn't it be better so set this parameter to false and to > >enable a kind of a "startup reset_stats" option? > > This is administrator statistics (e.g. number of disk blocks read from > this index) not planner statistics. You're right - it would be foolish > to throw away planner stats.
So what is best to set this parameter to and when? As I read this parameter is documented within the section "16.4.7.2. Query and Index Statistics Collector" so I guess it is better to set it to false as described above. Or am I wrong? Regards, Yann ---------------------------(end of broadcast)--------------------------- TIP 7: don't forget to increase your free space map settings
