On 1月19日, 下午5時19分, "Charles.Hou" <giveme(dot)(dot)(dot)(at)gmail(dot)com> wrote:
> after i backdb->dropdb->restoredb and then vacuum analy+full -> vacuum
> freeze
>
> the XID had been increased by 4 billion in two weeks...is it noraml?
>
> what's the definetion of XID?
>
> " select * from mybook" SQL command also increase the XID ?
>
> reference:http://www.postgresql.org/docs/9.0/static/routine-vacuuming.html
sorry... not 4 billion , is 4 hundred million