Re: Can I adjust the oid counter for testing?

Thanks Tom,

I suspect hacking pg_resetxlog is beyond my capabilities right now, but
if I do get anything I'll post a patch. I'll probably end up using
gdb...

Regards, Dave.

> -----Original Message-----
> From: Tom Lane [mailto:tgl(at)sss(dot)pgh(dot)pa(dot)us]
> Sent: 17 June 2002 15:00
> To: Dave Page
> Cc: PostgreSQL-development
> Subject: Re: [HACKERS] Can I adjust the oid counter for testing?
>
>
> "Dave Page" <dpage(at)vale-housing(dot)co(dot)uk> writes:
> > I need to do some testing of pgAdmin on a database with very large
> > oids (> 4,000,000,000). Is there anyway I can wind the oid counter
> > forward without having to do a few billion inserts? I'm on a test
> > system so I can initdb if required.
>
> A clean solution would be to extend pg_resetxlog to have a
> switch to set nextOid, parallel to its switch to tweak
> nextXid. (I had thought we had this already, actually, but
> I'm not seeing it in current sources.)
>
> The difficulty with that, if you are using current CVS, is
> that I believe pg_resetxlog is broken at the moment ---
> Thomas changed the format of pg_control recently and didn't
> update pg_resetxlog.
>
> If you want to fix both of those things and submit a patch,
> it'd save me some work that needs to get done before 7.3 can go out.
>
> If that all seems like too much work, you could just reach in
> with a debugger and set ShmemVariableCache->nextOid in a
> running system (be careful that nothing is going on while you
> do so). Better set
> ShmemVariableCache->oidCount = 0 while you're at it.
>
> regards, tom lane
>
> ---------------------------(end of
> broadcast)---------------------------
> TIP 4: Don't 'kill -9' the postmaster
>
>