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Background documentation Kernel Variant Locate the document in its SAP Library structure

Kernel variants are different variants of the kernel of the database system. They differ in terms of which logs and runtime checks are performed in regular database operations.

When the database is started, restarted, switched to the ADMIN operational state, or switched to the ONLINE operational state, you can specify explicitly which kernel variant you want the database instance to use.

The following kernel variants are available:

Kernel Variant

Properties

fast

System default
The fastest kernel variant, with only minimum logs and runtime checks performed

quick

A kernel variant that includes additional logs and runtime checks

slow

A kernel variant that includes highly comprehensive logs and runtime checks

Caution

Do not use the quick and slow kernel variants in production operation of the database. These kernel variants are much slower than the fast kernel variant due to the additional logs and runtime checks, and should only be used by Support.

See also:

Database Manager CLI, Displaying the Database Kernel Variant

 

 

 

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