A-DBM-LOGIN indicates the user name under which you want to connect to the database system. Not all databases require a user login name.
Example
To connect to the database with the user name MYNAME, you could specify:
A-DBM-LOGIN MYNAME
or
A-DBM-LOGIN myname
in the runtime configuration file. There is no default value for this variable. If no login is specified, none will be used.
See also
A-DBM-PASSWD runtime configuration file variable