After upgrading to R20 the online System History List (#2 option on main panel) is now displaying 15 min. intervals instead of 30 min. Why is that?
The CA SYSVIEW Performance Monitor for DB2 for z/OS Guide is not complete in describing this value. The Guide should differentiate between the Default in the Sysparms file, and the Default if not coded (if they are different).
In this case the guide neglected to mention them both. The default in the Sysparms is 30 minutes. The default, if not coded, is 15 minutes. The documentation will be updated to reflect that.