ADSM Oracle client

[Coni Barlow]

Hi.  Can anyone tell me if installing the ADSM Oracle client saved on tapes
and by how much?  Currently our DBAs are compressing a number of databases
and backing them every night.  My understanding of the Oracle client is
that only the files and tables that change get backed up instead of all of
the data...if that's the case, I'd like to STRONGLY encourage them to look
into this...but I'd like some ammunition in terms of your testimony.
Thanks in advance for your help.