> > Did you have some other replication running on the 11 instance? >
Yes the 11 instance also had another (11) replica running. (But these logs are from the 12 instance) The new 12 instance also had a replica running. In any case what was the command logged just before the ERROR. > There is nothing logged. These are the only log statements just before the error message, one second later the ERROR is logged: 2020-12-10 13:26:43 UTC::@:[5537]:LOG: checkpoints are occurring too frequently (20 seconds apart) 2020-12-10 13:26:43 UTC::@:[5537]:HINT: Consider increasing the configuration parameter "max_wal_size". 2020-12-10 13:26:43 UTC::@:[5537]:LOG: checkpoint starting: wal Lars On Mon, Dec 21, 2020 at 11:51 PM Adrian Klaver <adrian.kla...@aklaver.com> wrote: > On 12/21/20 2:42 PM, Lars Vonk wrote: > > What was being run when the above ERROR was triggered? > > > > > > The initial copy of a table. Other than that we ran select > > pg_size_pretty(pg_relation_size('table_name')) to see the current size > > of the table being copied to get a feeling on progress. > > > > And whenever we added a new table to the publication we ran ALTER > > SUBSCRIPTION migration REFRESH PUBLICATION; to add any new table to the > > subscription. But not around that timestamp, about 50 minutes before the > > first occurence of that ERROR. (no ERRORS after prior ALTER > SUBSCRIPTIONs). > > > > But after the initial copy's ended there are more ERROR's on different > > WAL segments missing. Each missing wal segment is logged as ERROR a > > couple of times and then no more. After a couple of hours no errors are > > logged. > > Something was looking for the WAL segment. > > Did you have some other replication running on the 11 instance? > > In any case what was the command logged just before the ERROR. > > > > > Lars > > > > > -- > Adrian Klaver > adrian.kla...@aklaver.com >