BRBACKUP options - difference between rman_util, rman_stage and rman_disk?

Hi
I am trying to implement a brbackup solution utilizing Oracle rman via Tivioli Storage Manager.
From reading the documentation, if I use rman_util option this will also require use of backint to backup the non-database elements. It appears that the rman_stage and rman_disk options can be used which do not require use of backint which sounds desirable.
However, I cannot find any documentation to explain how these differ and how these work?
It appears that the rman_stage option may work with an external tape API but when I try and use this, it asks for remote_host and remote_user to be entered in the init<SID>.sap file. This suggests that it is trying to do some sort of remote copy rather than use the tape API (TSM for Databases in my case).
Please can anyone explain this better?
Thanks
Tom

Hi,
I'm not expert in RMAN, but I know pretty well BR* tools and, with the help of the documentation, I think I can explain the differences to you.
1) if you want to use RMAN directly with a 3rd party tool and BRBACKUP then you had no other option than to use the BACKINT interface.
The following parameter has to be set:
backup_dev_type = rman_util
2) if you do not use BACKINT interface, then the only option is to backup to disk or to use a 3rd party SBT. in the last case, some files (logs, control files, profiles) are not backed up on the tape, they mst be copied to disk:
local disk: backup_dev_type = rman_disk
remote disk: backup_dev_type = rman_stage
you can find more information on the documentation:
[backup_dev_type|http://help.sap.com/saphelp_nw70/helpdata/EN/3f/9d800b1aec11d2b42c00609419997a/frameset.htm]
As I mentioned, this is my understanding from reading the documentation. May be someone has 1st hand information.

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IF
EXISTS
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WHERE
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=
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AND
type
in
(N'U'))
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TABLE [dbo].[ScrapTable]
GO
CREATE
TABLE [dbo].[ScrapTable](
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NOT
NULL
ON [PRIMARY]
GO
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ON;
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[dbo].[ScrapTable]
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[dbo].[ScrapTable](
[ScrapID]
[int]
NOT
NULL
ON
[PRIMARY]
GO
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PROCEDURE
[dbo].[GetScrap]
AS
BEGIN
SET
NOCOUNT
ON;
SELECT
FROM
dbo.ScrapTable
END
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(SELECT
FROM
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=
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AND
type
in
(N'U'))
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TABLE
[dbo].[ScrapTable]
GO
IF
NOT
EXISTS
(SELECT
FROM
sys.objects
WHERE
object_id
=
OBJECT_ID(N'[dbo].[ScrapTable]')
AND
type
in
(N'U'))
BEGIN
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TABLE
[dbo].[ScrapTable](
[ScrapID]
[int]
NOT
NULL
ON
[PRIMARY]
END
GO
Right click on my stored procedure and hit “Modify”:
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EXISTS
(SELECT
FROM
sys.objects
WHERE
object_id
=
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AND
type
in
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@statement
=
N'ALTER PROCEDURE [dbo].[GetScrap]
AS
BEGIN
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END
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Stef, DBA

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BRBACKUP options - difference between rman_util, rman_stage and rman_disk?

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