shared Locks

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От Daniel Schuchardt
Тема shared Locks
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Msg-id dgok5l$2ro8$1@news.hub.org
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Ответы Re: shared Locks  (Martijn van Oosterhout <kleptog@svana.org>)
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Hi group,

I have the following problem:

We have developed a  ERP/PPS Developed with pgsql over the last 4 years.
Now we introduce it on some of our customers {pgsql works great and gets
good ratings :-)} and so we have to change Tablestructure and so on very
often. For technologie reasons every clients starts a Connection and
holds it until the client terminates his program.

So if we want to change a table structure (add a field or sth like this)
many clients own AccessShareLock's because it seams that a simple SELECT
* FROM table will grant a AccessShareLock and don't release it unitl the
connection is terminated. Is that true? Is it is possible to release
this lock without a disconnect? {Problem is that about 30 users has to
disconnect sometimes. :-( }


thnx for comments,
Daniel

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