Choose tenant file names and database names so that these names can be represented consistently in the character sets of all
hosts in the cloud. Otherwise, if you move a database to a host that has a different character set, information could be lost.
Also, the database name must be representable in the character set of the database itself. For example, if the database character
set is CP1252, do not use characters from another character set in the database name.
Tenant database names:
Must not end in a well-known file name extension, such as .xml, .html, or .txt
Must not be longer than 128 characters in length
Can only contain a space ( ), pound sign (#), dash (-), percent sign (%), period (.), left parenthesis ((), right parenthesis
()), at sign (@), underscore (_), colon (:)
If possible, use 7-bit ASCII when naming tenant databases.