Good advice. These are known as "bigfile" tablespaces (the conventional kind are now called "smallfile"). On 8/30/05, Allen, Brandon <Brandon.Allen@xxxxxxxxxxx> wrote: > > You might want to consider "largefile" tablespaces if you're using 10g - > these are tablespaces that have one and only one datafile, which can be up > to 4,294,967,296 (roughly 4 billion - a.k.a 4GB) BLOCKS, which means a > single file can be 8-to-128TB (terabytes) depending on your block size (2k > to 32k). The other nice thing about these is that you can control the files > with ALTER TABLESPACE commands, e.g. ALTER TABLESPACE BIG1 RESIZE 10TB; > ALTER TABLESPACE BIG2 AUTOEXTEND ON NEXT 100G MAXSIZE 10TB; > > Disclaimer: I've never actually used largefile tablespaces myself - just > read about them :-) > > > -----Original Message----- > From: oracle-l-bounce@xxxxxxxxxxxxx > [mailto:oracle-l-bounce@xxxxxxxxxxxxx]On Behalf Of Branimir Petrovic > Sent: Tuesday, August 30, 2005 4:33 AM > To: oracle-l@xxxxxxxxxxxxx > Subject: Choosing data file size for a multi TB database? > > > How would you approach task of sizing data files for a project that will > start with > a 1TB database but may relatively quickly grow to stabilize at around 10TB > mark? > > Obvious options are: > > - start with many smallish files (like 2GB each), then add some > thousands more > as the database grows, > or > - start with a number of largish data files (in 10-100GB range each), > then add > more such files to accommodate growth. > > Neither of the above options look very desirable (to me at least). First > option > might be bad choice with checkpointing in mind, but the second option is > not > the > winner if data files ever needs to be moved around. Anyway some initial > choice must > be made, and all I'd like at this moment is not to give perilous initial > advice... > (admission: once the "ball" starts rollin', this bastard ain't gonna be > mine:)) > > So from practical perspective - what would be the least troublesome > choice? > > Branimir > > > > FYI I - OS platform is the darkest secret at this point, as is the > hardware > specs > (no-one can tell, early signs of "well communicated, well managed" project > are all > there) > > > FYI II - I've never had to deal with DBs much bigger than 100GB, thus the > need for > "reality check".. > -- > //www.freelists.org/webpage/oracle-l > > Privileged/Confidential Information may be contained in this message or > attachments hereto. Please advise immediately if you or your employer do not > consent to Internet email for messages of this kind. Opinions, conclusions > and other information in this message that do not relate to the official > business of this company shall be understood as neither given nor endorsed > by it. > > -- > //www.freelists.org/webpage/oracle-l > -- Paul Baumgartel paul.baumgartel@xxxxxxxxxxxx