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Home -> Community -> Mailing Lists -> Oracle-L -> Does NT write to random locations on disk?
Using a little utility called contig I noticed that the Oracle 8.1.6 datafiles on my test NT server are quite fragmented, an average of 177 fragments per file, 118 fragments for the OEM repository datafile. The poor utility couldn't do anything with the database files, they are too large perhaps.
These were created on an empty server, 8i release 2 went on it after a defrag, then the OEM. This is on a hard disk with 1.2G of free space, none of the datafiles come close to that.
Why so many fragments? Oracle created those files in one pass, does NT write randomly to disk or what?
Won't this have an impact on my NT database's performance?
Oracle says tablespace fragmentation is not a big deal, but fragmentation at the OS level matters. Supposedly that's why NT and WndowsXX came with defragmentation tools.
???
Is there a registry setting somewhere to tell NT to write contiguously to disk?
TIA
Patrice Boivin
Systems Analyst (Oracle Certified DBA)
Systems Admin & Operations | Admin. et Exploit. des systèmes Technology Services | Services technologiques Informatics Branch | Direction de l'informatique Maritimes Region, DFO | Région des Maritimes, MPO
E-Mail: boivinp_at_mar.dfo-mpo.gc.ca <mailto:boivinp_at_mar.dfo-mpo.gc.ca>
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Author: Boivin, Patrice J
INET: BoivinP_at_mar.dfo-mpo.gc.ca
Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Liststo: ListGuru_at_fatcity.com (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). Received on Fri Mar 09 2001 - 13:25:41 CST
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