Allen, Archived redo logs are written in bulks... I would think that it's written in the same chunks as read. I traced archiver once and got info that it reads from redo in chunks of 1MB (HP-UX 11i Oracle 9.2). I think you can trace archiver to verify it. For sure it writes in chunks more than 512 byte... rather something more like 1 MB. 2006/4/17, Allen, Brandon <Brandon.Allen@xxxxxxxxxxx>: > I'm guessing that archive logs > are written in 512 byte blocks just like the online redo, but I don't know > if that's true or not. Do any of you know? -- Best regards, Alex Gorbachev -- //www.freelists.org/webpage/oracle-l