OS390_Common_PageDSPctFull_Crit

OS390_Common_PageDS_PctFull_Crit monitors to determine whether the percentage of slots in use on the common page dataset is greater than or equal to 80% and issues a Critical alert if the condition is true. If the common page data set becomes full, a system crash is imminent.

The formula is:

IF VALUE Page_Dataset_Activity.Dataset_Type EQ Common AND VALUE Page_Dataset_Activity.Percent_Full GE 80

If this situation is raised, determine which address spaces are using the largest number of common slots and terminate those that can be shut down at this time. If this situation occurs more frequently than once a month, a larger common page data set should be created and activated at the next IPL.