A default minimum component trace is always started during
DMD initialization. Use a parmlib member to customize the parameters
that are used to initialize the trace. The default DMD component trace
parmlib member is the SYS1.PARMLIB member CTIDMD00. The parmlib member
name can be changed using the DMD_CTRACE_MEMBER environment variable.
Rule: The DMD reads the DMD_CTRACE_MEMBER
environment variable only during initialization. Changes to DMD_CTRACE_MEMBER
after server initialization have no affect.
Restriction: In addition to specifying the trace
options, you can also change the DMD trace buffer size. The buffer
size can be changed only at DMD initialization and has a maximum size
of 256 MB.
If the CTIDMD00 member or the member that is specified
in DMD_CTRACE_MEMBER is not found when starting the DMD, the following
message is issued:
IEE5381 memberName MEMBER NOT FOUND IN PARMLIB
When this occurs, the DMD component trace is started with
a buffer size of 1 MB and the MINIMUM tracing option.