Kernel Variant 

Kernel variants are variants of the kernel of the database system with differing properties. They differ according to the information that is logged and the runtime checks that are made while the database is running normally.

When you perform the following actions, you can specify which kernel variant you want to use explicitly: start the database instance, restart the database instance, transfer the database to the operational state ADMIN, transfer the database to the operational state ONLINE.

You can choose from the following kernel variants:

Kernel Variant	Properties
fast	System default. Fastest kernel variant, with minimum logging and runtime checks.
quick	Variant of the kernel with additional logs and runtime checks
slow	Variant of the kernel with extensive logs and runtime checks

Do not use the kernel variants quick and slow during production operation of the database. The additional logs and runtime checks make these variants much slower than the fast variant. They should be used by support teams only.

See also:

Database Manager CLI, Displaying the Database Kernel Variant