Thanks to everyone for their comments on this. You've convinced me. I'll go away and worry about something else instead now!
- Bill. At 04:43 27/02/02 -0800, you wrote: >I know this one has been done to death: use uniform extents to avoid >fragmentation; multiple extents don't hurt (within limits). > >But what if: > >Data Warehouse, one big table on a single disk, full table (batch) scan, >no concurrent transactions on the database (so no contention for the >disk), no fragmentation at the file system level, initially empty buffer >cache (startup), read-only operation so DBWR isn't doing anything on this >disk. Basically I want to read one data file from end to end. Surely it >would make sense to have the disk read moving smoothly from one end of the >disk to the other rather than bouncing about all over the place as it may >do with multiple extents "randomly" allocated. > >Any thoughts? > >Thanks >- Bill. -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Bill Buchan INET: [EMAIL PROTECTED] Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists -------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
