A new update is available for Base SAS , version 9.4_M2 :
An ORDER BY clause in a PROC SQL statement is ignored in rare cases
Macro variables SYSRC, SYSERR, and SQLRC are not being set when \"Error on server LIBNAME socket\" occurs on the SAS® Scalable Performance Data Server
ALERT: When used with a single argument, the COALESCE() function is not passed down to the relational database management system (RDBMS)
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.