Backing Up Data 
The application data of a database is stored in the data area. If the data area has been damaged, for example due to a hard disk error, you need data backups to restore the database. Therefore, regularly back up your data from the data area to data carriers. Note that in some cases you may need backed-up redo log entries in addition to the data backups in order to restore the database to the desired state following damage to the data area.
Data Backup Types:
Complete data backup: You back up the entire data area.
Incremental data backup: You back up all the data of the data area that has been changed since the last complete data backup.
You cannot start an incremental data backup during a complete data backup, and vice versa.
To speed up the backup process, you can back up data to several data carriers in parallel.
Prerequisites
You have defined a backup template.
More information: Backup Templates and Data Carriers
If you plan to back up to several data carriers in parallel, first read the section Backing Up to a Group of Parallel Data Carriers.
If you plan to back up to a data carrier on a remote computer (not the database computer), additional preparations may be necessary. More information: Backing Up and Restoring Data with Remote Computers
Procedure
To back up data, use Database Studio, Database Manager CLI, or CCMS (in SAP systems only). More information:
Database Studio, Backing up Data
Database Manager CLI Tutorial,
Database Administration in CCMS, Scheduling a Data Backup
You can also use third-party backup tools. More information: Using Third-Party Backup Tools