Hi Steve, 
Apologies, I misread it as 2 billion, it is as you said set as 200 million 
which is the default value for the parameter autovacuum_freeze_max_age. I just 
wanted to confirm whether there would be any impact if I cancel or terminate 
the backend for the existing autovacuum :vacuum table_name (to prevent 
wraparound). I have initiated a normal vacuum manually but it is stuck on the 
table where the autovacuum is processing it. 
Thanks, Rijo Roy 
Sent from Yahoo Mail on Android 
  On Wed, 11 Jul 2018 at 7:30 pm, Steven 
Winfield<steven.winfi...@cantabcapital.com> wrote:   #yiv7029743585 
#yiv7029743585 -- _filtered #yiv7029743585 {panose-1:2 2 6 9 4 2 5 8 3 4;} 
_filtered #yiv7029743585 {panose-1:2 2 6 9 4 2 5 8 3 4;} _filtered 
#yiv7029743585 {font-family:Calibri;panose-1:2 15 5 2 2 2 4 3 2 4;} _filtered 
#yiv7029743585 {font-family:Tahoma;panose-1:2 11 6 4 3 5 4 4 2 4;} _filtered 
#yiv7029743585 {panose-1:2 2 6 9 4 2 5 8 3 4;}#yiv7029743585 #yiv7029743585 
p.yiv7029743585MsoNormal, #yiv7029743585 li.yiv7029743585MsoNormal, 
#yiv7029743585 div.yiv7029743585MsoNormal 
 a:link, #yiv7029743585 span.yiv7029743585MsoHyperlink 
{color:blue;text-decoration:underline;}#yiv7029743585 a:visited, #yiv7029743585 
span.yiv7029743585EmailStyle17 {color:#1F497D;}#yiv7029743585 
.yiv7029743585MsoChpDefault {} _filtered #yiv7029743585 {margin:72.0pt 72.0pt 
72.0pt 72.0pt;}#yiv7029743585 div.yiv7029743585WordSection1 {}#yiv7029743585 
From: Rijo Roy [mailto:rjo_...@yahoo.com]
Sent: 11 July 2018 14:30
To: srkris...@yahoo.com
Cc: pgsql-gene...@postgresql.org
Subject: Re: Extremely slow autovacuum:vacuum to prevent wraparound
No, I have  3 sessions of autovacuum against 3 tables which is doing a Vacuum 
to prevent wraparound as it hit the limit of autovacuum_freeze_max_age of 2 

I also have a vaccumdb session which is invoked by me on these tables which is 
currently in paused state. So, I want to know whether I can kill the autivacuum 
sessions which is running since 5 days and extremely slow and just run a manual 
vacuum against these tables instead.  
Is your autovacuum_freeze_max_age really set to 2 billion? The default value is 
200 million. Setting it that high and disabling autovacuum isn’t just silly - 
it borders on sabotage!
I’ve used pg_cancel_backend() (NOT pg_terminate_backend()) on autovacuum jobs 
before without issue.
Good luck!
  This email is confidential. If you are not the intended recipient, please 
advise us immediately and delete this message. The registered name of Cantab- 
part of GAM Systematic is Cantab Capital Partners LLP. See - 
http://www.gam.com/en/Legal/Email+disclosures+EU for further information on 
confidentiality, the risks of non-secure electronic communication, and certain 
disclosures which we are required to make in accordance with applicable 
legislation and regulations. If you cannot access this link, please notify us 
by reply message and we will send the contents to you.

GAM Holding AG and its subsidiaries (Cantab – GAM Systematic) will collect and 
use information about you in the course of your interactions with us. Full 
details about the data types we collect and what we use this for and your 
related rights is set out in our online privacy policy at 
https://www.gam.com/en/legal/privacy-policy. Please familiarise yourself with 
this policy and check it from time to time for updates as it supplements this 

Reply via email to