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#1 (**permalink**) 04-10-2008, 10:02 AM

Hi,

how can one set the global OID counter in 8.1.X? We think it would work
in 8.0.X using the COPY WITH OIDS command but this does not work in
8.1.X anymore.

We have the problem that we made a dump using 'pg_dump -o' in 8.0.X,
created a new database in 8.1.X and read back in but the global OID
counter stayed at 40.000 so OIDs will be allocated again!

Thanks for help,

Dirk

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#2 (**permalink**) 04-10-2008, 10:02 AM

Dirk Lutzebäck wrote:
> Hi,
>
> how can one set the global OID counter in 8.1.X? We think it would work
> in 8.0.X using the COPY WITH OIDS command but this does not work in
> 8.1.X anymore.

pg_resetxlog -o
(Postmaster stopped of course)

--
Alvaro Herrera http://www.CommandPrompt.com/
PostgreSQL Replication, Consulting, Custom Development, 24x7 support

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#3 (**permalink**) 04-10-2008, 10:02 AM

Alvaro Herrera <alvherre@commandprompt.com> writes:
> Dirk Lutzebäck wrote:
>> how can one set the global OID counter in 8.1.X? We think it would work
>> in 8.0.X using the COPY WITH OIDS command but this does not work in
>> 8.1.X anymore.

> pg_resetxlog -o
> (Postmaster stopped of course)

Possibly more to the point: why do you think you need to mess with the
counter? 8.1 is smart enough not to assign conflicting OIDs to large
objects.

regards, tom lane

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#4 (**permalink**) 04-10-2008, 10:02 AM

This is not a large object. We are seeing rows with duplicate oids
because the OID counter is not changed after the dump (exported with
--oids) is being loaded.
How does 8.1 prevent to allocate duplicate OIDs?

Regards,

Dirk

Tom Lane wrote:
> Alvaro Herrera <alvherre@commandprompt.com> writes:
>
>> Dirk Lutzebäck wrote:
>>
>>> how can one set the global OID counter in 8.1.X? We think it would work
>>> in 8.0.X using the COPY WITH OIDS command but this does not work in
>>> 8.1.X anymore.
>>>
>
>
>> pg_resetxlog -o
>> (Postmaster stopped of course)
>>
>
> Possibly more to the point: why do you think you need to mess with the
> counter? 8.1 is smart enough not to assign conflicting OIDs to large
> objects.
>
> regards, tom lane
>

#5 (**permalink**) 04-10-2008, 10:02 AM

=?ISO-8859-1?Q?Dirk_Lutzeb=E4ck?= <lutzeb@aeccom.com> writes:
> This is not a large object. We are seeing rows with duplicate oids
> because the OID counter is not changed after the dump (exported with
> --oids) is being loaded.
> How does 8.1 prevent to allocate duplicate OIDs?

If there's a unique index on the OID column then 8.1 will not allocate
duplicate OIDs. If there's not such a unique index, you had no
guarantee of no-duplicates before 8.1 either.

regards, tom lane

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#6 (**permalink**) 04-10-2008, 10:02 AM

True.

Dirk

Tom Lane wrote:
> =?ISO-8859-1?Q?Dirk_Lutzeb=E4ck?= <lutzeb@aeccom.com> writes:
>
>> This is not a large object. We are seeing rows with duplicate oids
>> because the OID counter is not changed after the dump (exported with
>> --oids) is being loaded.
>> How does 8.1 prevent to allocate duplicate OIDs?
>>
>
> If there's a unique index on the OID column then 8.1 will not allocate
> duplicate OIDs. If there's not such a unique index, you had no
> guarantee of no-duplicates before 8.1 either.
>
> regards, tom lane
>

--
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addressed. If you are not the intended recipient, you should not copy
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Thank you for your cooperation./

*Dirk Lutzebäck* <lutzeb@aeccom.com> Tel +49.30.5362.1635 Fax .1638
CTO AEC/communications GmbH <http://www.aeccom.com>, Berlin, Germany

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How to set the global OID counter? COPY WITH OIDS does not set globalOID counter?