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List:       linux-390
Subject:    Re: Consistency groups for ZLinux Oracle environment
From:       Mike Shorkend <mike.shorkend () GMAIL ! COM>
Date:       2010-08-21 11:00:39
Message-ID: AANLkTi=7ctDNPjR2pjW1OgPgd0BS8WEFDrX+04maZxGd () mail ! gmail ! com
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The parameter that Offer is referring to as a box level freeze is Mode 64 on
a USP

Mike


On Sat, Aug 21, 2010 at 12:28 PM, Offer Baruch <offerbaruch@gmail.com>wrote:

> Hi,
>
> By your JOB title my guess is that you are using Hitachi? :-)
> What disks are you trying to copy (Source or target)?
> Creating a point in time copy should be just like a power failure...
> If your control files and index are not in sync than my guess is that you
> don't have a point in time copy.
> I am not an Oracle guy but if you do not expect this inconsistency after a
> power failure than it should not be in the PIT copy.
> If you are copying the target disks than you must be using a tool like BCM
> to create the copy or you must GROUP FREEZE the PPRC before the split.
> For the CGROUP FREEZE/RUN option (this will stop the PPRC) you must also
> set
> a parameter at the box level to tell it to create the FREEZE at the box
> level and not the CU level (if you want I can find the parameter for
> you...)
> If you are copying the source than you must use BCM.
> I did more than one successful Oracle 10G on Redhat DR tests.
>
> Hope this helps,
> Offer Baruch
>
> -----Original Message-----
> From: Linux on 390 Port [mailto:LINUX-390@VM.MARIST.EDU] On Behalf Of
> Joseph
> Higgins
> Sent: Tuesday, August 10, 2010 3:04 PM
> To: LINUX-390@VM.MARIST.EDU
> Subject: Re: Consistency groups for ZLinux Oracle environment
>
> Thank you for the reply.
> This is a little different than a straight backup.
> We are using a snapcopy (Flashcopy, TimeFinder, Shadowimage) to take the
> PIT
> and the Oracle control files and index are not in sync.
>
> Joseph Higgins
> Account Consultant
> HITACHI DATA SYSTEMS
> 90 Park Avenue
> New York, NY 10016
> P 212 827 1343 / C 201 566 6029
>
> Joseph.Higgins@hds.com
>
>
> -----Original Message-----
> From: Linux on 390 Port [mailto:LINUX-390@vm.marist.edu] On Behalf Of
> Shockley, Gerard C
> Sent: Tuesday, August 10, 2010 7:59 AM
> To: LINUX-390@vm.marist.edu
> Subject: Re: Consistency groups for ZLinux Oracle environment
>
> Have tried many -:
>
> Use RMAN with the FDR/Upstream interface.  Works great.
>
> Several successful recoveries in a wind tunnel (DR site).
>
> Gerard
>
>
> -----Original Message-----
> From: Linux on 390 Port [mailto:LINUX-390@vm.marist.edu] On Behalf Of
> David
> Boyes
> Sent: Monday, August 09, 2010 2:34 AM
> To: LINUX-390@vm.marist.edu
> Subject: Re: Consistency groups for ZLinux Oracle environment
>
> How are you taking the backup? If you're using anything but an application
> running inside the virtual machine (eg RMAN to disk, or another app that
> uses the Oracle APIs to get the data), you're going to lose, and you get
> the
> problem you've observed. The virtual machine probably has loads of stuff in
> RAM which the disk controllers may not know about yet, so your PIT copy is
> missing stuff.
>
> You either have to take the virtual machine down, or do your backups from
> inside the virtual machine. I'd suggest the latter.
>
> --db
>
> On 8/8/10 9:38 PM, "Joseph Higgins" <joseph.higgins@hds.com> wrote:
>
> > Hello,
> >
> > Is there any way to maintain consistency for point in time copies
> > without suspending the server IO?
>
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>


--
Mike Shorkend
mike@shorkend.com
www.shorkend.com
Tel: +972524208743
Fax: +97239772196

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