Re: what happens when concurrent index create

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От Raghavendra
Тема Re: what happens when concurrent index create
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Msg-id CA+h6AhhmrtsbA2w-KroguP1isQNi9sgtHiECDFujiSmsVFcyTA@mail.gmail.com
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Ответ на what happens when concurrent index create  (leo xu <leoxu8703@gmail.com>)
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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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