Oracle : Ошибка ORA-16021

"session %s destination cannot be the same as session %s destination"
*Cause: An attempt was made to change the first specified archive log
parameter using ALTER SESSION to have a destination value that
duplicates the session-level destination value of the second
specified archive log parameter.
*Action: Specify a different session destination value for one of the
LOG_ARCHIVE_DEST_n parameters.

Попробовать перевести

Поискать эту ошибку на форуме