Abbout the size I have realy no idea why is the file 10 times smaller. Check another time the sizes.
The speed is normaly slower, but I never tested on huge files. NFS was used for small files only.
An idea regarding yours problem: If you need only to make an export of the database you can install the client part of Oracle on Linux and run the export (exp) command directly from linux.
No, on friday i had about 1.12GB left on alpha disk this morning i had over 14GB so just to check this i copied the dump file back from the Linux machine onto the Alpha and i still have 13.07GB free, so something has gone wrong somewhere.
Check if you can write so large files on yours Linux. There are many restrictions for files larger than 2G, you must have the right kernel. There is also a restriction in the NFS V2 protocol, where the files are also restricted to 2G.
This will produce a ~ 3GB file filled with zeros (bs * count). Keep block size (bs) high for speed.
On VMS I am not shure if this will work (I have no NFS to test) but you can try. Create a fdl for a huge sequential file and invoke a CREATE/FDL command. This will allocate the space (but how NFS handles allocation?).
The fdl is something like this: FILE ALLOCATION size_in_512_blocks ORGANIZATION sequential
Substitute size_in_512_blocks with testing size (try first with a small size to see if works)
