Using IMS system log utilities

IMS provides several utilities to assist with extracting log records from the system log. These utilities also assist with reducing and merging data that is spread across several log data sets.

The sections that follow describe several of these utilities:

• File Select and Formatting Print utility

  You can use the File Select and Formatting Print utility (DFSERA10) if you want to examine message segments or database change activity in detail. This utility prints the contents of log records contained in the OLDS, SLDS, or the CQS log stream. Each log record is presented as one or more segments of 32 bytes. The printed output gives each segment in both character and hexadecimal formats.

• Fast Path Log Analysis utility

  Use the Fast Path Log Analysis utility (DBFULTA0) to prepare statistical reports for Fast Path, based on data recorded on the IMS system log.

  These reports are useful for system installation, tuning, and troubleshooting. The Fast Path Log Analysis utility is not related to the IMS Monitor or the Log Transaction Analysis utility. For more information about the IMS Monitor, see IMS Monitor.

• Log Transaction Analysis utility

  In an IMS DB/DC or DCCTL environment, you can use the Log Transaction Analysis utility (DFSILTA0) to collect information about individual transactions, based on records in the system log. Many events are tabulated in the Log Analysis report that is produced by this utility, including total response time, time on the input queue, processing time, and time on the output queue.

• Statistical Analysis utility

  In an IMS DB/DC or DCCTL environment, you can produce several summary reports using the IMS Statistical Analysis utility (DFSISTS0). You can use these reports to obtain actual transaction loads and response times for the system. The statistics produced are dependent on the input system log data sets.