A new update is available for Base SAS , version 9.4_M4 :
ALERT: Incorrect results occur when you subset a relational database management system table based on a date variable
You might experience slow performance when you run PROC DS2 with large formats
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.