Kernel Variant 

Kernel variants are different variants of the kernel of the database system. They differ in terms of which logs and runtime checks the database system performs during operation.

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.

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