Deall All,   Recently, I faced same issue in SAS 9.4 M4 where the instance SASServer8_1 was not starting.   After interacting with the OEM, we found an error indicating that the DB user account was locked (in my case, the DB was Oracle, and the error code was ORA-28000: user account locked).   However, after checking the user status with my DBA, the account was not locked.   Later, I updated the password for all the DB users found in the server.xml of SASServer8_1 and restarted the middle-tier services. It worked.   I hope the above steps will help you as well. ... View more