You can import alias tables that you have exported from another database. You can also create a source file as an import file.
Alias table import files must be formatted correctly, with names ending in .alt. For format details, see About Alias Table Import and Export Files. Essbase uses the table name provided in the header record of the import file to either create a new alias table or replace an existing one.
For non-Unicode-mode applications, alias table import files are assumed to be in the encoding of the Application Server. For Unicode-mode applications, alias table import files can be UTF-8 encoded (with the UTF-8 signature) or in the encoding of the application. Locale header records are not supported. For information about encoding, see About File Encoding and Locales.
To import an alias table:
Select Outline, then Import alias table.
In the Open dialog box, select the alias table import file.
Click OK.
“Setting Aliases” in the Oracle Essbase Database Administrator's Guide
unloadalias (ESSCMD) in the Oracle Essbase Technical Reference
loadalias (ESSCMD) in the Oracle Essbase Technical Reference