Topics: |
When you issue a report request, the adapter communicates
with the IMS DBMS through DL/I calls that it generates on your behalf.
This appendix discusses trace facilities that are available to help
you solve problems:
- IMS provides a trace, DLITRACE, that traps DL/I calls, displays
all their parameters, and shows the records returned by IMS and
the corresponding status codes (see DLITRACE).
- The adapter provides three traces: FSTRACE, FSTRACE2, and FSTRACE4
(see Adapter Traces).
FSTRACE
shows the state of the PCB before and after each DL/I call; it also provides,
for each call, the parameters, key feedback area, SSA buffer, return
code, and I/O buffer contents.
FSTRACE2 shows the Userid,
Filename and return code used and returned by the exit.
FSTRACE4
provides a dump of the SSA buffer for each SSA generated by a given request.
You can use this trace to see whether your requests produce qualified
SSAs. In the DBCTL environment, FSTRACE4 provides additional statistics.
|