If the database server was already running or was successfully started, the return value is TRUE (non-zero) and SQLCODE is
set to 0. Error information is returned in the SQLCA.
The following call to db_start_engine starts the database server, loads the specified database, and names the server demo.
Unless the ForceStart (FORCE) connection parameter is used and set to YES, the db_start_engine function attempts to connect
to a server before starting one, to avoid attempting to start a server that is already running.
When the ForceStart connection is set to YES, there is no attempt to connect to a server before trying to start one. This
enables the following pair of commands to work as expected:
If ForceStart (FORCE) is not used and the ServerName (Server) parameter is not used, then the second command would have attempted
to connect to server_1. The db_start_engine function does not pick up the server name from the -n option of the StartLine
(START) parameter.