Dne 4.5.2016 v 17:25 Alvaro Herrera napsal(a):
Ondřej Světlík wrote:
Hello,
we have a strange problem with autovacuum. We have three workers, but
usually only one works and two are waiting as they are all trying to process
table pg_shdepend which is shared between all databases.
Ooh, interesting bug.
As a workaround I suggest connecting to all of your databases except one
and disabling autovacuum for pg_shdepend. Then the table will be
processed in the one database where you left it enabled, and the other
workers will take care of the rest of the tables.
I'll think about a real fix.
Thank you, Alvaro,
we have already tried this, but we are not permitted to alter system
tables. Changing allow_system_table_mods doesn't seem safe enough, is
there another way to achieve this?
Oh, I forgot to mention this is 9.4.7.
Thanks,
Ondřej
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