DFS2013 NUMBER OF RECORDS IN QBLKS DATA SET HAS EXCEEDED UPPER THRESHOLD

Explanation
 IMS has established an upper threshold
for the number of records which can be assigned to the QBLKS data
set before warning message DFS2013 is issued. This threshold is some
percentage of the maximum number of records assignable before an automatic
shutdown is initiated.

System action
 IMS continues execution.

Programmer response
 You might want to reduce the queue usage
and avoid a possible shutdown. To determine the effect of this action,
examine the percentage of use displayed by the /DIS POOL command.
When the number of records assigned to the QBLKS data set drops below
the lower threshold established by IMS, message
DFS2016 will be issued.