This video describes the following service calls:

• LOG: This call is an explicit call interface that permits a program to write desired data to the log.

• STAT: This call is of primary interest to IMS DBAs and System Programmers who are attempting to diagnose and correct IMS database performance problems.

• SNAP: This call produces a dump of processor storage associated with database buffers and control blocks; the output from this call is only of interest to System Programmers attempting to resolve an IMS software code defect.