Chris Travers <chris@verkiel.metatrontech.com> writes:
> Luki Rustianto wrote:
>> I wonder if there are any guidelines / step by step / special
>> considerations whether it applies to database structure or the
>> application it self if we want to upgrade to version 8.xxx ?
> Depends on if your app depends on the (hidden) OID fields that were
> included by default before 8.0.
That's just one of numerous minor incompatibilities. Read the release
notes and test your applications --- but by all means fix whatever
application issues you need to fix, and get moved over. 8.1 is way
better than 7.4 by any number of measures; even more to the point, we
won't be supporting 7.4 forever.
regards, tom lane