Re: psqlodbc versioning

Peter Eisentraut wrote:
>
> Could you show us some kind of specification about what this new lock
> reporting interface would look like (what functions, what parameters,
> etc.)?

I'll try to get some input from the vendor on this. I don't know what
their source looks like, being just a local admin of one of their client
sites -- and probably getting a bit too involved in things I have no
control over.

> ... the whole concept of locks is sort of obsolete since PostgreSQL uses
> multiversion concurrency control which does not require locks (loosely
> speaking)...

Maybe this app is married to the lock concept because it has to work in
a roughly equivalent way with various underlying database layers, and so
tries to cling to the mechanisms they have in common. The concurrency
control idea makes a lot of sense, and I wouldn't be surprised if they
are not aware of it or don't understand it.

Also they have things set up so that maybe a "session" ends up not
meaning what it should. For instance, although the application has its
own separate users and means of authenticating them, I am pretty sure it
makes all postgres queries as a single generic user.

Thanks for taking the trouble to reply. I'll pass along all the
information I can, and try to light a constructive fire under these guys.

-- Mark