On some unix there is some overhead needed and some not. On AIX i think it is 4k. Anyway, using rman to copy the datafiles from raw to filesystem will always work for all platforms, no offset to consider at all:) On 2/9/06, Radoulov, Dimitre <cichomitiko@xxxxxxxxx> wrote: > > > I'm trying to test a conversion from raw to filesystems. > > a couple of questions am planning to use dd > > this is AIX 5.2 > > i know to convert from raw to filesystem there is an filesystem > header > > offset you need to be careful of . > > a simple dd wont work to convert. > > any ideas suggestions. > > Did it many times without any problem (on SUN Solaris). > > > Regards, > Dimitre > > > -- > //www.freelists.org/webpage/oracle-l > > > -- Regards Zhu Chao www.cnoug.org