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Background documentation Catalog Cache Locate the document in its SAP Library structure

In the catalog cache, the database system stores user-specific data and global data from the database catalog. Data that has been displaced from the catalog cache is moved to the data cache.

A catalog cache is assigned to each user task at the start of the database session; this catalog cache is then released after the database session has ended. The total of all catalog caches can expand up to the value that has been configured with the database parameter CAT_CACHE_SUPPLY.

The hit rate for the catalog cache should be over 85 percent. The lower limit for the hit rate depends largely on the application.

See also:

Concepts of the Database System, Special Database Parameters

 

 

 

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