Re: jdbc targetServerType=slave with readonly connection

Could you elaborate on what do you mean by "does not seem to be recognized correctly"?

You might be hitting https://github.com/pgjdbc/pgjdbc/pull/844 , so would you please check if pgjdbc 42.2.0-SNAPSHOT (e.g. https://oss.sonatype.org/content/repositories/snapshots/org/postgresql/postgresql/42.2.0-SNAPSHOT/ ) resolves your issue?

>jdbc driver thinks it is connected to a slave

pjgdbc uses "show transaction_read_only" query to tell master from secondary.

"readOnly=true" connection option is used/activated _after_ the connection, so it should not impact master/secondary selection.

PS. There's 10 second-long (hostRecheckSeconds) cache of the host status. That is, pgjdbc caches master/secondary state of the host for 10 seconds by default, so it might "fail" to identify recently activated secondary. 

Vladimir