Jared/Tom,

> As Tom pointed out, the problem is how to have the software,
> ( RMAN in this case ) automatically load the correct tapes
> when the backup was made to disk, and then the disks
> were later backed up to tape.

Ahh - now I understand the question. You *will* need the MML (Media
Management Layer) and an automated tape library that is supported by the
sofware and version that provides the MML. In actual terms, say you use
Legato Networker and the provided MML that interfaces to RMAN: In this case,
the Legato agent will be prompted by the Legato server to backup the
database - this agent in turn will execute the named RMAN script, which will
then create your DATAFILE COPY on disk and kick off a backup of these to
tape. The Legato server index will then be used to store the tag name,
bar-code number, filename/date/size, etc. of bar-coded tape on which this
particular datafile copy was placed - this tape will then be placed in the
tape silo. Upon a request to perform a restore as of a particular day/time,
this index will then 'remember' the right tape, the robotic eye/arm will
then locate/load the right tape (identified by the bar-code) into the drive
from the silo and presto - your datafile copy is back where it should be,
all automated of course thanks to robotics and bar-codes! This should work
in a similar manner with other vendors such as Veritas Netbackup, Arcserve,
IBM (now Tivoli) ADSM, etc.

Does this clarify (or make it murkier)?
John Kanagaraj
Oracle Applications DBA
DBSoft Inc
(W): 408-970-7002

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