IFCID 199 enhancement
agburke 060001QPDN Visits (1104)
IFCID 199 statistics are externalized on boundaries based on the statistics interval and a grouping of data sets having more than 1 I/O per second. Thus statistics for that data set may not be externalized at the statistics interval boundary. This can cause some confusion when monitoring for specific data sets requiring I/O.
From the APAR text:
New field QW0199SC has been added to the data section 3 of the IFCID 199. This field contains the timestamp of the last time the corresponding dataset statistics were externalized. If this is the first time statistics for this dataset are externalized, this value is a timestamp of when this dataset was opened.