Verifying IMS Monitor report occurrences

When you examine the output from the IMS Monitor Report Print program, the presence of a report heading does not necessarily mean that appropriate data is listed.

System definition options and utility control statements affect the content of the output as follows:

• The output does not include a Call-Summary report unless a control statement specifies DLI.
• The output does not include a set of Distribution reports unless a control statement specifies DIS or DISTRIBUTION. The column headed DISTRIBUTION NUMBER that occurs on many of the reports contains cross-references to items included in the Distribution reports.
• The output consists of just a Call Summary report if a control statement specifies ONLY DLI.

Because many of the summary reports require system status to calculate the difference between start and end values, and this status is obtained during the /TRACE SET OFF processing, the IMS Monitor execution must end before termination of the IMS control region. If the trace was not stopped properly, the following message is issued:

NO QUEUE BUFFER POOL TRACES AT END TIME ON MONITOR LOG TAPE
****QUEUE BUFFER POOL REPORT CANCELLED****

Similarly, other summary reports are not produced.

The series of reports with the title BUFFER POOL STATISTICS do not include a VSAM BUFFER POOL section unless one of the databases in IMS.ACBLIB uses the VSAM access method. If VSAM is not used, the following message is issued:

NO VSAM BUFFER POOL TRACES ON MONITOR LOG TAPE
****VSAM BUFFER POOL REPORT CANCELLED****

The section MESSAGE FORMAT BUFFER POOL is included only if your system definition specifies devices using Message Format Service (MFS).

If the source data used to formulate a particular IMS Monitor report, or a section of that report, has not been recorded by the IMS Monitor during the trace interval, the report contains only the headings.