Our cloud provider, Amazon AWS, provided an automated update to our MySQL database service last night. This was to provide a fix to the security report issued by Oracle on Oct. 16.
We are happy to report that our highly available configuration allowed our failover database server to be upgraded, and then take the load and our primary server upgraded without losing any transactions. Some users may have seen an error on database connection during one of the transfers, but if they hit submit again, the transaction went thru.
This is an important database upgrade and you should check with your other cloud service providers to ensure they have made the upgrade as well.