The DBUG i5/OS® FTP server subcommand starts or ends a server trace.
Use the FTP server trace only for reporting software problems to IBM. You might affect system performance by using this function.
DBUG
If the FTP server trace is not active, the FTP server starts a trace. The FTP server continues to run a trace until it receives another DBUG subcommand or a QUIT subcommand. When the FTP server ends the trace, there might be a significant delay while the DBUG subcommand is formatting the trace data.
Related concepts
Tracing the FTP server