Database Instance 

The SAP DB database can be installed and run on a computer in one mode (database instance) or several modes (database instances) (Database Instance Type, see also: SAP DB Versions and Database Instance Types).

Each database instance consists of threads, main memory structures (caches) and disk-based storage of the data on devspaces.

 

The following disk-based devspaces are available in every database instance for the physical storage of data:

Each database instance differentiates between the following areas for the logical storage of data: