Re: Problem with pg_notify / listen

["David G. Johnston" <david.g.johnston@xxxxxxxxx>]

On Friday, November 27, 2020, Gustavsson Mikael <mikael.gustavsson@xxxxxxx> wrote:

Hi.

After applying the latest patch we have encountered a problem with the pg_notify queue. 

The queue is filling up and starts issuing warnings like 

WARNING:  NOTIFY queue is 87% full

DETAIL:  The server process with PID 2969993 is among those with the oldest transactions.

NOTIFY queue cannot be emptied until that process ends its current transaction.

There is no long-running 'active' or 'idle in transaction' transactions on the server.

 

As its easy enough to run can you please confirm this by showing us the pg_stat_activity record for that pid during the time when this warning appears?

Thanks!

David J.