I think it's called either 'debugger' or 'dbxtool', which is a windowed type thing, allowing you to do the usual things you can do with a grapical debugger.
But it could be one of those $$$ options, but I can't see how you would really want to separate the debugger from the compiler.
[tt]ls /SUNWspro/SC3.0/bin[/tt]
is probably worth a shot
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