From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
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To: | Heikki Linnakangas <hlinnaka(at)iki(dot)fi> |
Cc: | pgsql-hackers(at)postgresql(dot)org |
Subject: | Re: XactIsoLevel handling |
Date: | 2004-05-19 00:24:31 |
Message-ID: | 9525.1084926271@sss.pgh.pa.us |
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Lists: | pgsql-hackers |
Heikki Linnakangas <hlinnaka(at)iki(dot)fi> writes:
> Why is the isLocal-parameter false? Couldn't it be true as well? It works
> as it is, since the XactIsoLevel variable is reset to default value in
> StartTransaction anyway, but it looks silly to me to define the variable
> as a session variable when in fact it acts like a local one.
Perhaps it could be true instead, but I see no point in invoking the
extra overhead of the local-variable mechanism given that this variable
is special-cased anyway.
> I bumped into this because my current 2PC doesn't allow you to set session
> variables.
Seems like the problem is right there, not with XactIsoLevel ... you
cannot seriously claim that that is an acceptable restriction.
regards, tom lane
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