On Wed, 14 Mar 2001, Mary Christie Generalao wrote:
..
> I see. But Im curious why the underlying file system
> and the fact that sparc is big- and intel is
> little-endian will affect the the copying of data
> between solaris and linux? Isnt it that when i archive
> /u02 in solaris and untar it in linux, tar still
> writes the files correctly on linux corresponding to
> the underlying file system's structure? or perhaps
> oracle takes note of these differences (does oracle
> have its own user-level FS on top of the OS for its
> datafiles)?
That would work if Oracle data files were just "naive" plain flat
files. But they are not. Oracle uses the same internal data structure
whether its data files reside on a "cooked" filesystem or on a raw
device. So yes, in both cases, Oracle has its own (not quite an FS, a way
of storing data to ensure consistency, multiversioning, and safe
commits) layer on top of the filesystem.
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