Oracle Message TNS-01107 - A valid trace level was not specified

ERRORA valid trace level was not specified
CAUSEFailed to specify a valid trace level for the LSNRCTL trace command.
ACTIONSpecify one of OFF, USER, ADMIN, or SUPPORT. Type LSNRCTL help trace for more information or consult Chapter 2 of this manual for an introduction to the concepts of tracing.