User Data as Options 
User data and, in some cases, other data can be entered as options when calling the SAP DB tools, the C/C++ Precompiler, or the application programs.
<dbmcli | loadercli | dbmgui | sqlsto | cpc <file_name>> [ <options> ] ...
<options>
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SAP DB Component |
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Database Manager CLI |
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SAP DB Loader |
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Database Manager GUI |
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SQL Studio |
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C/C++ Precompiler |
If you enter all the required user data (in most cases, the options -u, -d, -n) and these entries are complete and correct, you are logged on to the chosen SAP DB tool or C/C++ Precompiler is called.
For each tool, the user data required for logon to a database instance must be entered. Options are not necessarily required for the Database Manager GUI and SQL Studio, but this data can also be entered in a logon screen. For other tools, there are required options, which must always be entered.
The SAP DB tool Database Manager CLI and the C/C++ Precompiler support the XUSER concept (User Data Using XUSER).