HP 3000 Manuals HP 3000 Manuals
The Tracing Facility Tracing is an interpretive diagnostic technique that provides data for analysis, and can be done at many levels. SNA link tracing is done at the lowest level and at an intermediate level (see the SNA Link Services Reference Manual, or the SNA Link/XL Node Manager's Guide). SNA NRJE tracing is at the highest level, and is controlled through MPE commands or NRJE commands (see Chapter 6 of this manual). The tracing facility for SNA NRJE performs two types of tracing: intrinsic tracing and LU tracing. Intrinsic Tracing Intrinsic tracing records NRJE intrinsics called by NRJE users or invoked through NRJE commands. Intrinsic trace records are created after successful completion of the intrinsic. If the intrinsic fails, only the Result array parameter is traced. Intrinsic tracing is turned on with the NRJECONTROL START or NRJECONTROL TRACEON MPE command, or with the STARTWS or TRACEON NRJE command. It is turned off with the NRJECONTROL TRACEOFF MPE command or the TRACEOFF NRJE command. Intrinsic tracing goes to a disc file. The trace file name can be specified as an argument to any of the commands used to start tracing. Naming the file this way allows the contents of the file to be overwritten each time a new trace is started. (No warning is issued.) Or you can let the default name be assigned: NMTCnnnn.PUB.SYS, where nnnn is a number from 0000 through 9999. The trace file can be formatted through the NMDUMP utility. Using NMDUMP for SNA NRJE is described later in this chapter. More detailed information about NMDUMP is contained in the SNA Link Services Reference Manual (for MPE V) and in Using the Node Management Services Utilities (for MPE XL). LU Tracing You should use LU tracing only under the recommendation of an HP service representative. LU tracing records NRJE internal program events. Most modules are traced during LU tracing. LU tracing for a workstation can be initially turned on only when the workstation is started. After that, it can be turned off or on as long as the workstation is active. LU tracing is turned on with the NRJECONTROL START or (once the workstation is active) NRJECONTROL TRACEON MPE command, or with the STARTWS or (once the workstation is active) TRACEON NRJE command. It is turned off with the NRJECONTROL STOP or NRJECONTROL TRACEOFF MPE command, or the STOPWS or TRACEOFF NRJE command. LU tracing goes to a disc file. The trace file name can be specified as an argument to any of the commands used to start tracing. Naming the file this way allows the contents of the file to be overwritten each time a new trace is started (no warning is issued). Or you can let the default name be assigned: NMTCnnnn.PUB.SYS, where nnnn is a number from 0000 through 9999. The trace file can be formatted through the NMDUMP utility. Using NMDUMP for SNA NRJE is described later in this chapter. More detailed information about NMDUMP is contained in the SNA Link Services Reference Manual (for MPE V) and in Using the Node Management Services Utilities (for MPE XL).
NOTE Although the format of the default trace file name is the same for all types of tracing, the same default file name will not be assigned for more than one trace. This is because the default trace file name is automatically assigned in numerical order. For example, suppose the last default trace file name assigned was NMTC0004.PUB.SYS. If you started SNA Transport intrinsic tracing, and did not specify a trace file name, the default name NMTC0005.PUB.SYS would be assigned. Then, if you started SNA NRJE intrinsic tracing without specifying a trace file name, the default name NMTC0006.PUB.SYS would be assigned. Finally, if you started NRJE LU tracing, and did not specify a file name, the default name NMTC0007.PUB.SYS would be assigned. Remember, this applies only when you are using the default file-naming scheme.