ORA-16023: system string destination cannot be

admin

ORA-16023: system string destinationcannot be the same as session string
destination
Cause: An attempt to change the first specifiedLOG_ARCHIVE_DEST_n (n =
1...31) parameter produced a destination that duplicates the sessiondestination
value of the second specified LOG_ARCHIVE_DEST_n parameter. This error can
occur when setting a non-NULL value with the ALTER SYSTEM command. Or,
this error can occur when setting a NULL value with ALTER SESSION command,
because then the associated system destination value may appear as a duplicate.
Action: Specifya different destination value for the first specified LOG_
ARCHIVE_DEST_n parameter.