2017-11-08 0:45 GMT+01:00 Tom Lane <t...@sss.pgh.pa.us>:

> =?UTF-8?Q?Ulf_Lohbr=C3=BCgge?= <ulf.lohbrue...@gmail.com> writes:
> > I just ran "check_postgres.pl --action=bloat" and got the following
> output:
> > ...
> > Looks fine, doesn't it?
> A possible explanation is that something is taking an exclusive lock
> on some system catalog and holding it for a second or two.  If so,
> turning on log_lock_waits might provide some useful info.
>                         regards, tom lane

I just checked my configuration and found out that "log_lock_waits" was
already enabled.

Unfortunately there is no log output of locks when those long running "SET
ROLE" statements occur.


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