Re: what happens when concurrent index create
| От | Raghavendra |
|---|---|
| Тема | Re: what happens when concurrent index create |
| Дата | |
| Msg-id | CA+h6AhhmrtsbA2w-KroguP1isQNi9sgtHiECDFujiSmsVFcyTA@mail.gmail.com обсуждение исходный текст |
| Ответ на | what happens when concurrent index create (leo xu <leoxu8703@gmail.com>) |
| Список | pgsql-general |
On Tue, Apr 3, 2012 at 9:50 PM, leo xu <leoxu8703@gmail.com> wrote:
i read documents,i find it that concurrent index create don't lock write.but
need scan table twice.it explain is following as:
It scans the table once to initially build the index, then makes a second
pass to look for things added after the first pass.
please explain 1. what happens when concurrent index create .tks.
2.how to trace a backend what do somethings internal.for
example oracle 10046 trace.
It seems you are looking for a similar behavior of sql_trace in oracle. You can try pgstatstatements contrib module.
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