That's correct behavior for postgresql. See the documentation for 
explanation.

-alex
On Wed, 20 Mar 2002, Doug Silver wrote:

> Hi All -
> 
> I'm just trying to confirm the perl DBI transaction/rollback feature,
> which works as expected except for one thing, one field that is SERIAL
> keeps incrementing, i.e. the sequence doesn't get rolled back.  Does this
> mean I need to manually rollback (setval (current value-1))??
> 
> I tried both automatically inserting into the table and manually getting
> the next value, but it doesn't matter.
> 
> I'm using perl 5.6, DBI-1.20, and DBD-Pg-1.01 (PostgreSQL).
> 
> Thanks!
> 
> (Please cc me directly as I'm not on this list)
> 
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> Doug Silver
> Network Manager
> Quantified Systems, Inc
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> 
> 
> 

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