SAP Database Guide: IBM DB2 for i 
This documentation enables you to administer your IBM DB2 for i database with the SAP system. It is aimed at system administrators and database administrators familiar with the IBM backup and recovery documentation.
We recommend that you read SAP Note 825473, which is regularly updated with the latest information on backup and recovery. For assistance with backup and recovery issues, contact IBM.
Note
The information in this documentation is intended as SAP-specific information only. It does not replace the information provided by the IBM documentation, which you must read carefully.
For information about installing the SAP system with IBM DB2 for i, see the installation documentation for SAP NetWeaver.
SAP simplifies database administration for you by providing various DBA functions in the Computing Center Management System (CCMS) of the SAP system. For more information, see CCMS: IBM DB2 for i.
For information about reorganization, see the IBM Redbook Implementing SAP Applications on the IBM System i Platform with IBM i5/OS (document number SG24-7166).
For information about how to make a copy of your database, see System Copy.