You need to perform various tasks to set up administration for IBM DB2 for z/OS in an SAP environment.
Here you can find a list of guides that provide information about database administration for SAP on IBM DB2 for z/OS:
http://service.sap.com/instguidesnw under , where x stands for the number of the version
For an overview of major enhancements and new features relating to monitoring and administration tools for SAP on System z, see the SAP on DB2 for z/OS - Monitoring and Administration: News and Improvements area on the SAP Community Network at: http://scn.sap.com/docs/DOC-8197.
The SAP Community Network homepage (http://scn.sap.com/community/db2-for-z-os) offers best practices, presentations, blogs and more.