Re: AW: relation ### modified while in use - Mailing list pgsql-hackers

From Hiroshi Inoue
Subject Re: AW: relation ### modified while in use
Date
Msg-id 39F40655.6913181B@tpf.co.jp
Whole thread Raw
In response to AW: relation ### modified while in use  (Zeugswetter Andreas SB <ZeugswetterA@wien.spardat.at>)
List pgsql-hackers

Zeugswetter Andreas SB wrote:

> > What I'm proposing is that once an xact has touched a
> > table, other xacts should not be able to apply schema updates to that
> > table until the first xact commits.
>
> No, this would mean too many locks, and would leave the dba with hardly a
> chance to alter a table.
>

Are there many applications which have many SELECT statements(without
FOR UPDATE) in one tx ?
As for locks,weak locks doesn't pass intensive locks.  Dba seems to be able
to alter a table at any time.

Regards.
Hiroshi Inoue



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