Oracle : Ошибка ORA-19710

"unsupported character set %s"
*Cause: When the target database is not mounted, RMAN sets the target
database character set to the value specified in the users
*Action: Specify a valid character set in the environment. This is usually
done via the NLS_LANG environment variable.

Попробовать перевести

Поискать эту ошибку на форуме