add some more REDOLOG files sufficiently large enough. Make suer that you have enough RBS. If you want to keep the archiver going on, make sure that you have enough diskspace for the archiver, so this would give the archiver some time to archive the REDOLOG.

Or you can temperorily disable the archiving by issuing the command

ALTER SYSTEM ARCHIVE LOG STOP;

confirm it through

select archive from v$instance;


Now if you do the export, there will not be any archiving done and it should progress smoothly. But if there is a problem then you would only be able to recover the database until the point of archive and not beyond that.

Good luck,

Sam