Re: 2-phase commit

Kevin Brown wrote:
> Bruce Momjian wrote:
> > Marc G. Fournier wrote:
> > >
> > >
> > > On Sat, 27 Sep 2003, Bruce Momjian wrote:
> > >
> > > > I have been thinking it might be time to start allowing external
> > > > programs to be called when certain events occur that require
> > > > administrative attention --- this would be a good case for that.
> > > > Administrators could configure shell scripts to be run when the network
> > > > connection fails or servers drop off the network, alerting them to the
> > > > problem. Throwing things into the server logs isn't _active_ enough.
> > >
> > > Actually, apparently you can do this now ... there is apparently a "mail
> > > module" for PostgreSQL that you can use to have the database send email's
> > > out ...
> >
> > The only part that needs to be added is the ability to call an external
> > program when some even occurs, like a database write failure.
>
> Actually, all that's really necessary is the ability to call a stored
> procedure when some event occurs. The stored procedure can take it from
> there, and since it can be written in C it can do anything the postgres
> user can do (for good or for ill, of course).

But the postmaster doesn't connect to any database, and in a serious
failure, might not be able to start one.

--
Bruce Momjian | http://candle.pha.pa.us
pgman(at)candle(dot)pha(dot)pa(dot)us | (610) 359-1001
+ If your life is a hard drive, | 13 Roberts Road
+ Christ can be your backup. | Newtown Square, Pennsylvania 19073