Message: proxy_rroad_..._properties returned a result set with a different schema than expected
Message: Status: proxy_rroad_connection_properties returned a result set with a different schema than expected
Explanation: If Foxhound was recently upgraded (for example, from version 3 to 4), the new
version of Foxhound may not have been able to upgrade the three "rroad_..._properties" procedures
(rroad_connection_properties, rroad_database_properties and rroad_engine_properties)
because the target database is read-only. If the target database is a read-only scale-out copy database,
try connecting the new version of Foxhound to the primary database so the rroad_..._properties" procedures
can be updated, after which they will be automatically synchronized to the read-only copy database.
See Help - Introduction - Connecting to Target Databases
for more information about these procedures.
Another possibility is that two different versions of Foxhound are being used to monitor the same target database using the same user id:
Stop one of the sampling sessions, and stop and start the other one, or
stop both sampling sessions, change one of them to connect to the target database with a different user id, then start both sampling sessions.