A new update is available for SAS Middle Tier , version 9.4_M3 :
Metadata support for SAS/ACCESS® Interface to Amazon Redshift
Using SAS® Real-Time Decision Manager 6.5 with the SAS® Federation Server 4.2 causes gradual decline of throughput and increased response time
When you are using SAS® Real-Time Decision Manager, duplicate warning or diagnostic messages might occur in SAS® Federation Server 4.2 logs
Note: A comprehensive list of all SAS hot fixes is available from support.sas.com. You can use the SAS Hot Fix Analysis, Download, and Deployment (SASHFADD) tool to manage your SAS hot fixes.