To prevent the hard disks being accessed unnecessarily, read and write operations are buffered by the database system in caches in the main memory.
The database system uses the following caches, among others:
· Catalog cache
· I/O buffer cache (contains the data cache and converter)
· Log queue
You can configure the caches using database parameters.
See also:
Concepts of the Database System, Database Parameters
Database Manager GUI, Displaying Cache Information
Database Manager CLI, Displaying Information on the Database Instance
In SAP systems, use
the Database
Assistant to display database information, or the
liveCache
Assistant for liveCache instances.