Thomas Lockhart <lockhart@fourpalms.org> writes:
>>> How much of a pain would it be to make that a 64-bit counter?
>> It'd be nontrivial, primarily because of portability issues...
> This stuff should be configurable, depending on platform support.
We do already support platforms where Datum is 64 bits because pointers
are 64 bits (eg, Alpha); on such hardware I think 64-bit OIDs would
have near-zero added execution cost. But I'm troubled by the notion of
having OID be 32 bits on some platforms and 64 on others. We have more
than enough platform-dependency issues already...
regards, tom lane