okay ... one metalink note (268167.1) explains that the size is calculated as blocks multiplied by blocksize. It completely ignores the COMPRESSED flag. hmmm ... Raj On 3/30/06, rjamya <rjamya@xxxxxxxxx> wrote: > I have a largish (?) table that I wanted to export using expdp > (10.1.0.4). This table is partitioned and compressed and has about > 700m rows. > > Compressed size of this table is ~90gb, when I used expdp with > ESTIMATE_ONLY option, it came back with total estimaetd file size of > about 92.6gb. Since I was skeptical, I tried to do a trial export and > guess what ... the total export size was about 240GB+. > > Now, it isn't close to 92gb. So, in your experience, does oracle just > report blocks allocated blindly without checking for COMPRESSED flag > on the table? > > Oh and if you haven't been burnt by this already, if you have more > than 256 partitions, it fails with ora-1426, looks like another y2k > problem in the making to me. > > tia for input > Raj > ---------------------------------------------- > Got RAC? > -- ---------------------------------------------- Got RAC? -- //www.freelists.org/webpage/oracle-l