gtpp1m13Program Development Support Reference

Diagnostic Output Formatter (DOF) Online and Offline Utility

The diagnostic output formatter (DOF) utility formats dumps offline and online. The offline part prints a listing from real-time tape data. The online part, also referred to as the in-core dump formatter (ICDF), formats and prints system error dumps.

The offline DOF utility formats and prints real-time tape data, such as:

The offline DOF utility formats the diagnostic data read from the real-time log tape (RTA/RTL).

The online DOF utility formats and prints system error dumps when the system error routines process a dump record and the write utility determines from system error options that the dump should be printed online, rather than dumped to tape for offline processing.

For both offline and online dump processing, the DOF utility produces a listing of formatted RTA/RTL data that is printed in the following sequence:

  1. Real-time trace output, system error dumps, and communication control program (CP) input/output (I/O) trace (in that order)
  2. Program test vehicle I/O message stream
  3. Selective file dump and selective file trace (SFDT) output
  4. Program test vehicle package test output:

    Each individual test unit output, including simulation output, is printed as an entity

    Each user input (that is, options, programs loaded, and data records) is printed at the start of the test unit's output

  5. The END OF TEST UNIT message is printed at the conclusion of DOF processing.
  6. Output from system test terminal simulator (STTS) follows the END OF TEST UNIT message.

Both the online and offline DOF utilities format system error dumps and manual dumps with specific headings and storage labels to help you identify particular storage locations. This chapter focuses on how to use these headings and labels to read a dump. For information about: