Oracle : Ошибка ORA-15121

"ASM file name '%s' contains an invalid diskgroup name"
*Cause: A file name was specified that did not contain a valid
diskgroup name. The diskgroup name follows immediately after
the ASM prefix character. It must start with an alphabetic
character, and consist of up to 30 characters which are
alphabetic, numeric, or the characters '$' and '_'.
*Action: Correct the file name specification.

Попробовать перевести

Поискать эту ошибку на форуме