Re: disabling seq scans

"Marcus Andree S. Magalhaes" <marcus.magalhaes@vlinfo.com.br> writes:
> But, since we're using pooled connections, we must be extra
> careful and ensure all connections have the enable_seqscan
> reset to its default.

If you are concerned about failing to reset parameters, use "SET LOCAL
foo" instead of plain "SET foo" (and of course, do this inside a
transaction block).  With the LOCAL option the parameter is guaranteed
to be reset at transaction end.

> Do the pooling system resets the "enable_seqscan" variable
> when the connections are delivered to the clients or we
> *must* do it ourselves?

I think it is reasonable to expect a pooling system to deliver you a
fresh transaction.  It is not reasonable to expect it to go and issue
explicit SET commands to undo things you've done.

            regards, tom lane