In addition to VMDUMP, VM2000 also offers internal trace functions.
Trace functions of VM2000
VM2000 offers the following internal trace functions in the monitor system:
The execution trace for runtime logging
The error trace for error logging
$VMCONS trace for runtime logging in $VMCONS
The trace functions are called by VM2000 at specific execution points to log a run or a detected error.
VM2000 writes trace entries into separate buffers, the execution trace buffer, the error trace buffer and the $VMCONS trace buffer. The contents of these buffers are output by means of the utility routine VMDUMP.
Control of the trace functions
TRACE-LEVEL=*OFF is set after VM2000 READY. The scope of trace logging can be defined with /MODIFY-VM-ATTRIBUTES TRACE-LEVEL=*OFF/*STD/*MAXIMUM.
When *OFF is specified, only system errors such as inconsistent table states or undefined return codes after VM2000 hypervisor calls are logged in the execution and error trace buffers.
When *STD is specified, important execution points in the execution trace buffer are also logged.
Specifying *MAX causes even more execution points in the execution trace buffer to be logged.
The following BS2000 diagnostic aids are also available for use in the monitor system:
CONSLOG file (also contains the VM2000 commands and messages)
REPLOG file (also contains the VM2000 REP corrections)