The LOGGER utility extracts specified records from the log and then analyzes these records to produce a report.
During the log extraction process, LOGGER creates three files:
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JOBSUMMARY/<mmddyy>, which contains data on each job, task, and message control system (MCS)
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STATISTICS/<mmddyy>, which contains system statistics—such as the number of jobs run and the number of halt/loads—grouped by 15-minute intervals
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FILEIODATA/<mmddyy>, which contains data on file usage based on log records of file open operations and file close operations
In these file names, <mmddyy> is the month, day, and year on which the file was created.
LOGGER then generates a report by reading data from these three files. LOGGER can also generate a report based on previous versions of these files; this capability enables the utility to analyze log data collected over a period of time in order to generate a long-term report.
