Dne 4.5.2016 v 22:08 Ondřej Světlík napsal(a):
Dne 4.5.2016 v 20:52 Victor Yegorov napsal(a):
2016-05-04 18:08 GMT+03:00 Ondřej Světlík <osvetlik@xxxxxxxxxxx
<mailto:osvetlik@xxxxxxxxxxx>>:
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.
I hit the same issue when we've migrated out all large objects (~200Gb
total), I've executed `vacuumlo` and then all autovacuums started to
process `pg_shdepend`.
They've been picking on this table over and over again from different
databases, but were stopping on the truncation phase due to other
autovacuums were waiting on the same table.
I ended up manually vacuuming this table in the database, that was
cleaned up, and also in the `postgres` DB. It fixed the case for me.
This was on 9.0.23 though.
--
Victor Y. Yegorov
Thank you very much, we have a working autovacuum on one of our clusters
again. That's awesome :-).
Ondřej
Hello again,
as this is still not fixed in any released version and the problem
occurred again, let me ask one question. Which form of manual VACUUM is
sufficient to prevent wraparound? Is it VACUUM FREEZE or do I have to
use VACUUM FULL?
Thanks in advance,
Ondřej
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