Commands can be transferred to the
Database Manager CLI (Database Manager CLI: SAP DB 7.4, Section
DBM Commands).
Syntax
<command_name> [<parameters>]
A DBM command is always made up of the command name and optional parameters affecting its execution.

dbmcli -u dbmmann,secret -d MK1 param_getfull cache_size
The Database Manager is called and a database session is created for the DBM operator
dbmmann, password secret with the registered database instance MK1. The DBM command param_getfull is used to request all data for database parameter CACHE_SIZE.