How to enable Oracle listener tracing 1. Enable tracing
LSNRCTL> set trc_level ADMIN
2. Disable tracing
LSNRCTL> set trc_level OFF
3. Format the trace file using trcasst utility. The command line options for trcasst may vary from version to version, so check what options are supported by your installation.
trcasst [options] [filename]
