Hi, Thank you all for help.
> FWIW in case you haven't tried yet, if you could find a DETAILS: line > following to the ERROR: canceling.." message in server log, it would > narrow the possibility. I executed a database dump with 4 jobs and here are logs how this ended. 2020-06-19 02:38:28 UTC:[30953]:ERROR:40001:canceling statement due to conflict with recovery 2020-06-19 02:38:28 UTC:[30953]:DETAIL:User query might have needed to see row versions that must be removed. 2020-06-19 02:38:28 UTC:[30953]:LOCATION:ProcessInterrupts, postgres.c:3057 2020-06-19 02:38:28 UTC:[30953]:STATEMENT: 2020-06-19 02:38:28 UTC:[30926]:FATAL:40001:terminating connection due to conflict with recovery 2020-06-19 02:38:28 UTC:[30926]:DETAIL:User query might have needed to see row versions that must be removed. 2020-06-19 02:38:28 UTC:[30926]:HINT:In a moment you should be able to reconnect to the database and repeat your command. 2020-06-19 02:38:28 UTC:[30926]:LOCATION:ProcessInterrupts, postgres.c:2987 2020-06-19 02:38:28 UTC:[30952]:ERROR:40001:canceling statement due to conflict with recovery 2020-06-19 02:38:28 UTC:[30952]:DETAIL:User query might have needed to see row versions that must be removed. 2020-06-19 02:38:28 UTC:[30952]:LOCATION:ProcessInterrupts, postgres.c:3057 2020-06-19 02:38:28 UTC:[30952]:STATEMENT: 2020-06-19 02:38:28 UTC:[30953]:LOG:08006:could not receive data from client:Connection reset by peer 2020-06-19 02:38:28 UTC:[30953]:LOCATION:pq_recvbuf, pqcomm.c:978 Does it give any hints for anyone? Or how to find right version of source code what to analyse? BR, Toomas
