Using MS-SQLSERVER the begin trans is "implicit" at first update or delete command. It is not necessary to "worry" about selects before the first update or delete command. I got confused but I understand now. I guess :-)
On Sat, Dec 19, 2009 at 10:58 AM, Clayton Graf <clayton.graf@gmail.com> wrote: > Ok, but this is really my problem: I cannot perform an ALTER TABLE with the > system in production mode, because the ALTER TABLE hangs due an > AccessShareLock.
until the lock is released, are your selects all that long? besides, why are you ALTERing the table in production... i guess clients will suffer if the expect less or more columns than the ones they receive from the ALTERed table
> We use two-tier mode,
don't understand this
> so is it necessary to shutdown all users before > perform an ALTER TABLE?
no
--
Atentamente, Jaime Casanova Soporte y capacitación de PostgreSQL Asesoría y desarrollo de sistemas Guayaquil - Ecuador Cel. +59387171157
