Following is an excerpt from the white paper How to Stop Defragmenting and Start Living:
These extent sizes are chosen to be a multiple of five blocks since Oracle7 will round all extent sizes to a multiple of five blocks. In Oracle8 extents won't be rounded to a multiple of five blocks if they are a multiple of the minimum extent size for the tablespace. For Oracle8 databases, choosing the following extent sizes is a little simpler. 1) Segments smaller than 128M should be placed in 128K extent tablespaces. 2) Segments between 128M and 4G should be placed in 4M extent tablespaces. 3) Segments larger than 4G should be placed in 128M extent tablespaces For the remainder of this paper we will assume that the Oracle7 extent sizes are used since they can be used in both releases. I have some partitioned indexes that I am trying to split out into individual tablespaces, one tablespace per partition. In the excerpt below, I'm not sure what the meaning of segment is. My question is this. If the entire index is 152M and an individual index partition is 5m, then what size extent sizes should I use in my index partition tablespaces? Note that this is an 8.0.4 database. Thanks for your clarification on this issue. Cherie Machler Oracle DBA Gelco Information Network -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: 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).
