Re: [HACKERS] update_pg_pwd trigger does not work very well

Bruce Momjian <pgman@candle.pha.pa.us>

From: Bruce Momjian <pgman@candle.pha.pa.us>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: pgsql-hackers@postgreSQL.org
Date: 2000-02-27T05:35:42Z
Lists: pgsql-hackers
> I am not quite certain that this is completely bulletproof when there
> are multiple backends concurrently updating pg_shadow, but I have not
> been able to think of a case where it'd fail.  The worst possibility
> is that a committed update in pg_shadow might not get propagated to
> pg_pwd for a while because some other transaction is holding a lock on
> pg_shadow.  (But pg_pwd updates can be delayed for that reason now,
> so it's certainly no worse than before.)
> 
> Comments?

I see your point.  Guess we have to do it inside xact.

-- 
  Bruce Momjian                        |  http://www.op.net/~candle
  pgman@candle.pha.pa.us               |  (610) 853-3000
  +  If your life is a hard drive,     |  830 Blythe Avenue
  +  Christ can be your backup.        |  Drexel Hill, Pennsylvania 19026