Robert Haas <robertmhaas(at)gmail(dot)com> writes:
> On Wed, Nov 9, 2011 at 9:54 AM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
>> I would think you need to drop the now-useless lock, and I sure hope
>> that RangeVarGetRelid does likewise.
> It doesn't currently. The now-useless lock doesn't really hurt
> anything, aside from taking up space in the lock table.
Well, there are corner cases where the object OID gets reused during
the lifetime of the transaction, and then the lock *does* do something
(and what it does would be bad). But taking up extra space in the
finite-size lock table is sufficient reason IMO to drop the lock.
It's not like these are performance-critical code paths.
regards, tom lane