KBA regarding Server 2012 is here:
http://www.symantec.com/docs/DOC6193
SMP and Altiris supoprt matrix KBA is here:
http://www.symantec.com/docs/HOWTO9965
Similar thread here:
https://www-secure.symantec.com/connect/forums/symantec-management-platform-sql-server-2012-compatibility
https://www-secure.symantec.com/connect/forums/support-server-2012windows8-managed-end-point