IFCDIP00 creates a time stamp record on the logrec data set in the first record space following the header record. The time stamp record provides current date and time information for the IPL record. This allows you to measure the approximate time interval, recorded in the IPL records, between the ending and reinitialization of the operating system.
At preset time intervals, the system obtains the current date and time and writes this information on the time stamp record, overlaying the previous date and time.
During a subsequent initialization of the system, the system obtains the date and time from the time stamp record and adds it to the IPL record.
If IFCDIP00 is used to reinitialize the logrec data set, the information in the time stamp record is overlaid with hexadecimal zeros until the system writes the current date and time.