I just consider this may happens and pg can't recover correctly:
if postgres crashed last time and left a postmaster.pid file, and last
postgres
id is reused by another process which is not postgres now.
"Tom Lane" <tgl@sss.pgh.pa.us> д����Ϣ����:29598.1193228404@sss.pgh.pa.us...
> "Richard Wang" <ruc_wang@hotmail.com> writes:
>> I construct a postmaster.pid file and then set the pid to be one of
>> existing
>> process id(not postgres, e.g vim), then I run postgres. This may happen
>> if
>> postgres crashed last time and left a postmaster.pid file, and last
>> postgres
>> id is reused by another process which is not postgres now.
>
> Don't do that. The postmaster is perfectly capable of recovering on
> its own, why would you want to mess with the postmaster.pid file?
>
> regards, tom lane
>
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