Client has an FMP11 solution running on a Windows server with Mac clients (10.10 and 10.11). There is a link to a MySQL using a system DSN on the server. Has been working great for months. Now we are getting periodic disconnects where the ESS data is not accessible. Quite random. I have inserted a trap for error 1413 in routines that push/pull data from the ESS source.
As the error is so random it has been hard to come up with a method to test the connection persistence.