On Fri, Apr 15, 2011 at 2:12 AM, Aleksey Tsalolikhin
<atsaloli.t...@gmail.com> wrote:

> Hi.  I use the following query (from
> http://wiki.postgresql.org/wiki/Lock_Monitoring)
> to monitor locks; and I've got an ExlusiveLock that does not have a relation
> name associated with it.  What is locked with the Exclusive Lock in this case,
> please?  (it's between "d" and "e" tables below)

Locks can be held on databases, relations, rows and also show for transactions.

So the absence of a relation name just means it is one of the other
kinds of lock.

-- 
 Simon Riggs                   http://www.2ndQuadrant.com/
 PostgreSQL Development, 24x7 Support, Training & Services

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