Hello,
Please check the below article for your question.
http://www.symantec.com/business/support/index?page=content&id=HOWTO8627
How to move an existing Altiris NS 6.x database from one SQL server to a new SQL server
http://www.symantec.com/business/support/index?page=content&id=HOWTO2574
How to move an existing CMDB from one SQL server to a new SQL server 2008 / 2008 R2
http://www.symantec.com/business/support/index?page=content&id=HOWTO65643
https://www-secure.symantec.com/connect/forums/moving-new-db-server