Security Concepts 
· In production database systems, choose the following log settings: mirror the log area, the log area can be overwritten only after it has been backed up, and redo log management is always activated
· You can guarantee a high level of security against the failure of the SAP DB database system by using fault-tolerant hardware and software.
· To enable you to implement your chosen data backup strategy, SAP DB offers tools for performing data backups and log backups.
· The restartability of the SAP DB database system enables some errors to be corrected automatically when the database system is started.