Multiprocessor Configuration 

To allow multiprocessor configurations to be used to the best advantage, the database system supports external/internal tasking that can be configured.

The aim here is to allow the maximum possible number of database sessions to be supported by the minimum possible number of operating system threads.

The configuration of the database system controls the degree of external/internal tasking via the two parameters MAXUSERTASKS and MAXCPU.

On a computer, 4 processors are available for the database instance. No more than 800 database sessions should be running simultaneously.

In this case, set MAXCPU to 4 and MAXUSERTASKS to 800.

The database instance can then utilize the four processors by establishing four operating system threads, each of which performs an internal tasking for up to 200 users.