Search notes:

oradebug dump

oradebug dump DUMP_NAME lvl [addr] [arguments, …]

oradebug dump dumps information pertaining to DUMP_NAME. A list of available dump names can be found with oradebug dumplist.

List of parameters

A list of parameters for dump names and their meanings can be obtained with:

oradebug doc event action

For a specific dump name like so:

oradebug doc event action buffers