SMF89 in macro DSN6SYSP

Specifies whether DB2® is to do detailed tracking for measured usage pricing. If you select YES, DB2 does detailed measured usage tracking if SMF type 89 records are activated.

When SMF89 is set to YES, DB2 invokes a z/OS® service on every entry into or exit out of DB2 to ensure accurate tracking.

The default value is NO, which means that DB2 does not do detailed measured usage tracking. If the SMF type 89 record is activated, only high-level tracking is recorded in the SMF type 89 record. Selecting NO reduces CPU usage, but also increases the amount of time spent in DB2 as measured by SMF 89.

Recommendation: Select SMF89 YES only if you use measured usage pricing.