is the name of a currently open data base. If no
data base name is specified, the message is logged against the data
base opened with the DEFINE or DATA-BASE= command.
"text"
is a character string to be written to the log file.
Discussion
This command allows you to write a message to the log file
that adds additional information, or that identifies transactions
in the event of a system failure and subsequent recovery. A message
can be added at any time, but can be no more than 512 characters.