Any reasons there could't be either more statuses for a connection besides
CONNECTION_BAD, CONNECTION_OK, or alternativetely, a new libpq function
that could tell us READY_TO_RECEIVE_MORE_SQL_COMMANDS,
PREVIOUS_TRANSACTION_ABORTED_UNTIL_..., etc. (Sorry that I'm shouting... I
just write constant names that way like everyone else.)
-- Jouni
On Mon, 12 Feb 2001, Bruce Momjian wrote:
We discussed using 'ROLLBACK' before passing a connection to a new user,
but the problem was that ROLLBACK with no open transaction causes a
server log error message. We discussed adding 'ROLLBACK SILENT' to fix
this, but I believe a better, more portable solution is a simple "BEGIN
WORK;ROLLBACK". This will do nothing if there is no open transaction,
and will ROLLBACK any open transaction. I propose this be sent by PHP
as the first query when passing persistent connections.
i'll have a look at that tomorrow (if my family allows;-). if
"BEGIN WORK;ROLLBACK" does not stack transactions i think you
might have found the solution to the php-postgres problem! do
If we every get nested transactions, this will no longer work, but we
don't have them, and will not for a while.
you know how other script-interfaces (perl) to postgres
handle the very same thing?
They don't handle them, but our Java interface just added this feature.
As far as SET changes, does anyone on the PostgreSQL interfaces list
have a suggestion on how to RESET all session parameters? Seems we may
need to add this feature in to the backend.
with the oracle driver (i wrote) there is a neat thing in the
oci-libs: you have a server-handle _and_ a session handle.
the session handle sits "on" the server-handle and keeps
_all_ session specific data, the server handle "only" carries
the pure connection to oracle. so i keep the server handle
persistent and allocate/free session handles on it for each
request to PHP. that way the sessions are always clean. but i
also do a forces rollback on the session handle before i free
it on request-end so that in case of a script error all
outstanding transactions are rolled-back.
Yes, it would be nice if we had that feature.
--
Bruce Momjian| http://candle.pha.pa.us
[EMAIL PROTECTED] | (610) 853-3000
+ If your life is a hard drive, | 830 Blythe Avenue
+ Christ can be your backup.| Drexel Hill, Pennsylvania 19026
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