Re: Largeobject Access Controls and pg_migrator

Bruce Momjian <bruce@momjian.us>

From: Bruce Momjian <bruce@momjian.us>
To: Takahiro Itagaki <itagaki.takahiro@oss.ntt.co.jp>
Cc: KaiGai Kohei <kaigai@kaigai.gr.jp>, KaiGai Kohei <kaigai@ak.jp.nec.com>, pgsql-hackers@postgresql.org
Date: 2009-12-16T22:20:33Z
Lists: pgsql-hackers
Takahiro Itagaki wrote:
> 
> KaiGai Kohei <kaigai@kaigai.gr.jp> wrote:
> 
> > Can SELECT lo_create(16385); help this situation?
> 
> SELECT lo_create(loid) FROM (SELECT DISTINCT loid FROM pg_largeobject) AS t
> 
> would work for pg_migrator.
> 
> > I'm not clear whether we also check pg_largeobejct has chunks with same
> > LOID on lo_create(). In the regular operation, it shall never happen.
> 
> I think the omission is a reasonable optimization.

Thanks, I have updated pg_migrator to use your suggested method.

-- 
  Bruce Momjian  <bruce@momjian.us>        http://momjian.us
  EnterpriseDB                             http://enterprisedb.com

  + If your life is a hard drive, Christ can be your backup. +