If you have Create/Delete Applications permissions, you can create databases. When you create databases, Essbase creates database directories under the application directory on an Essbase Server (ARBORPATH\app\appname\dbname).
You must create applications before you add databases to them. Block storage databases are created within block storage applications, and aggregate storage databases are created within aggregate storage applications.
To create databases:
From Enterprise View or a custom view, select an application.
Right-click, and select Create database.
In the Create Database dialog box, if the preferred Essbase Server and application are not selected, select the preferred Essbase Server and application.
In Database name, enter a name for the database.
From Database type, select Normal (the default) or Currency.
For information about currency databases, see Converting Currency.
If you want to permit duplicate member names in the database outline, select Allow duplicate member names.
Click OK.
Essbase creates the database and updates Enterprise View.
“Creating Applications and Databases” in the Oracle Essbase Database Administrator's Guide
create database (MaxL) in the Oracle Essbase Technical Reference
createdb (ESSCMD) in the Oracle Essbase Technical Reference