RE: RMAN tuning

From: Mercadante, Thomas F <NDATFM_at_labor.state.ny.us>
Date: Wed, 29 Aug 2001 12:58:38 -0700
Message-ID: <F001.0037BF32.20010829125041@fatcity.com>

Ruth,

According to Michael:
>Tom:

>I haven't got a change to test it. I will try it sometime today. However,
>page 11-11 of Oracle8i Backup and Recovery Guide (8.1.5) states that Do not
>use this port-specific string if you have specified type disk.

>Thanks,

>Michael

I haven't tried it for disk, as I am backing up to tape and am happy about it. I mentioned that when I tested this param on NT/EDM, I experienced marked improvements by setting this value from the default of 64k up to 2M. There was no appreciable difference setting the parameter higher.

Tom Mercadante
Oracle Certified Professional

-----Original Message-----
Sent: Wednesday, August 29, 2001 11:36 AM To: Multiple recipients of list ORACLE-L

Tom,
Does this only work for tape?

Ruth
----- Original Message -----
To: "Multiple recipients of list ORACLE-L" <ORACLE-L_at_fatcity.com> Sent: Wednesday, August 29, 2001 9:10 AM

> Michael,
>
> You might look at the BLKSIZE parameter. I did some basic tests using NT
> and the EDM client, and found that setting the BLKSIZE to 2 Meg was the
> fastest for my installation. I think the default is 64k.
>
> You set the parameter like:
>
> allocate channel d2 type 'SBT_TAPE' parms 'BLKSIZE=2097152';
>
> Hope this helps.
>
> Tom Mercadante
> Oracle Certified Professional
>
>
> -----Original Message-----
> Sent: Tuesday, August 28, 2001 9:26 PM
> To: Multiple recipients of list ORACLE-L
>
>
>
> Hi All,
>
> I use RMAN to do a full backup of 120G database while the database is up
> running. It takes around 6 hours to finish. I have 61 data files and
> manually allocate 6 channels. For all the RMAN parameters such as
> FILESPERSET, I take the default.
>
> Does anybody there know how to maximize the throughput?
>
> Thanks,
>
> Michael
>
>
>
>

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Author: Ruth Gramolini
  INET: rgramolini_at_tax.state.vt.us

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Author: Mercadante, Thomas F
  INET: NDATFM_at_labor.state.ny.us

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Received on Wed Aug 29 2001 - 14:58:38 CDT