martin.chantler@convergys.com writes:
> I tried this out by running 2 VB programs via ODBC than randomly
> performed queries - they appeared to work in parallel - however I then
> started a PSQL session and entered a slow query it appeared to stop
> the 2 VB programs until it had completed. Anyone got the answer to
> this???
With only that amount of detail, there is no answer. Some things run
in parallel, some things interlock; but you didn't tell us what your
test case was.
regards, tom lane