dbs/dba/ccms_security_level is a SAP Parameter attribute which is used to control DBA Cockpit: Granularity of CCMS Maintenance Security Check information. This is available within R/3 SAP systems depending on the version and release level.
Below is the standard documentation available and a few details of the attributes values .
This parameter enables or disables system-specific authorization checks
for the DBA Cockpit:
If this parameter is set to '1', only users with authorizations of the
S_DBCON authorization object are able to access remote systems from the
DBA Cockpit. With the S_DBCON authorization object, access permissions
can be granted for each user/system combination separately.
If the parameter is set to '0', no system-specific authorization checks
are in place. Users in the DBA Cockpit only need the authorizations that
are granted globally with the S_RZL_ADM authorization object and with
the profile parameter
See SAP Parameter Documentation for full SAP documentation for this profile parameter.