From: | John R Pierce <pierce(at)hogranch(dot)com> |
---|---|
To: | pgsql-general(at)postgresql(dot)org |
Subject: | Re: how to start a procedure after postgresql started. |
Date: | 2011-05-23 00:48:08 |
Message-ID: | 4DD9AEC8.5040905@hogranch.com |
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Lists: | pgsql-general |
On 05/22/11 10:45 AM, Darren Duncan wrote:
>> ...but your entire application would be running in a single
>> transaction. I don't think thats a good thing.
>
> Absolutely. But if the kind of stored procedures were supported that
> can do anything a database client can do, including transaction
> control statements, then the main program routine would typically be
> one of those.
yes, but postgres doesn't support the idea of stored procedures callable
outside of transactions, so I don't know how this could be implemented
without some major rework of the core engine.
for the sake of the novices amongst us, let me clarify my earlier
statement that a single long running transaction is not a good thing.
Vacuum can not free up tuples newer than the oldest pending
transaction. This will put quite a lot of hurt on a update intensive
database over a period of hours or days.
--
john r pierce N 37, W 123
santa cruz ca mid-left coast
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