ORA-16022: LOG_ARCHIVE_DEST cannot be NULL

admin

ORA-16022:LOG_ARCHIVE_DEST cannot be NULL because LOG_ARCHIVE_
DUPLEX_DEST is non-NULL
Cause: An attempt was made to change parameterLOG_ARCHIVE_DEST to
NULL when parameter LOG_ARCHIVE_DUPLEX_DEST is non-NULL.
Action: Eitherset parameter LOG_ARCHIVE_DEST to a non-NULL value, or set
parameter LOG_ARCHIVE_DUPLEX_DEST to a NULL value.