For performance and security, most of our queries use bind variables. We also implemented auto_explain for tracking down un-optimized queries. Our database supports a large application. During the work-hours, there are 30,000+ queries executed every hour. PostgreSQL logs rotates every hour and each log contains 30,000+ error message like below.
2020-01-27 00:00:03 UTC:xxx.xx.0.189(35558):xxxxxx@xxxxxxdb:[130756]:STATEMENT: EXPLAIN select ...,...,..,... from ... where ....=$1
These error messages are really overwhelming to us and they are not useful at all. In our opinion, these error messages should not be logged.
I agree they shouldn't be logged. And I don't get such messages when using auto_explain with something like `pgbench -M prepared`.
What version are you using? What settings are you using for auto_explain? What is your client language/driver? Maybe the client is doing something weird like sending duplicate binds?
