Disk Group from normal to external in a RAC environment

Hello,
my environment is based on 11.2.0.3.7 RAC SE with two nodes.
Currently I have 4 DG, all in NORMAL redundancy, to contain respectively:
ARCH
REDO
DATA
VOTING
At the moment I focus only with non-VOTING DG.
Each of them has 2 failure groups that physically maps to disks in 2 different server rooms.
The storage arrays are EMC VNX (one in each server room).
They will be substituted by a VPLEX system that will be configured as a single storage entity with DGs in external redundancy.
I see from document id
How To Move The Database To Different Diskgroup (Change Diskgroup Redundancy) (Doc ID 438580.1)
that it is not possbile to do this online apparently.
Can you confirm?
I also read the thread in this forum:
https://community.oracle.com/message/10173887#10173887
that seems to confirm this too.
I have some pressure to free the old storage arrays, but in short time I will not be able to stop the RAC RDBMSs I have in place.
So the question is: can I proceed into two steps so that
1) add a third failure group composed by the VPLEX disks
2) wait for data sync of the third failure group
3) drop one of the two old failure groups (ASM should be let me make this, correct?)
3) brutally remove all disks of the remaining old storage failure group
and proceed in reduced redundancy for some time until I can afford the maintenance window
Inside the ASM administrator guide I see this:
Normal redundancy disk group - It is best to have enough free space in your disk
group to tolerate the loss of all disks in one failure group. The amount of free
space should be equivalent to the size of the largest failure group.
and also
Normal redundancy
Oracle ASM provides two-way mirroring by default, which means that all files are
mirrored so that there are two copies of every extent. A loss of one Oracle ASM
disk is tolerated. You can optionally choose three-way or unprotected mirroring.
spare

When you are creating external table you must specify location that external table will use to manipulate with external data.
This is done with LOCATION and/or DEFAULT_DIRECTORY parameter.
If you want that every instance in your cluster is able to use one specific external table, then you would need to have the location specified in the create external table command visible/accessible to all servers in your cluster, propably by some specific shared os disks/storage configuration; e.g. mounting remote disks, and this could very easy cause slower ext. table performance than it would be when the specified location is on the db server.
This will be the one and only way because it is impossible to specify remote location, either when creating directory or in any specification parameters when creating external table.

Similar Messages

ASM normal redundancy disk group

Hi,
One of my collegues created an ASM disk group with normal redundancy using 2 disks. But the disks are not of same size, one disk is 100GB and another one is 10GB.
Now the usable space out of diskgroup is showing 55GB. When I checked the diskgroup properties it is showing 2 fail groups one is DATA1_0000 with 10GB and other is DATA_0001 with 100GB.
My question is why it is showing 55GB as usable space?
My assumption is as it is having 2 fail groups with different disks of different sizes. For the failgroup 2 even it is of 100GB size, in order to maintain the redundancy with other small FG(10G) it will consider only 10GB out of 100GB.
So, the 2nd FG size also should be 10GB. So that the usable space should show as 10GB as opposed to 55GB (not (100+10)/2).
Please clarify me.
Thanks,
Mahi

Hi,
Please see the below output, I am talking about DATA1 disk group with number 2.
SQL> select group_number,name, type,total_mb, free_mb, required_mirror_free_mb, usable_file_mb from v$asm_diskgroup;
GROUP_NUMBER NAME                           TYPE     TOTAL_MB    FREE_MB
REQUIRED_MIRROR_FREE_MB USABLE_FILE_MB
           1 DATA                           NORMAL       6144       5344
                   2048           1648
           2 DATA1                          NORMAL     112640     108604
SQL> select group_number, name, mount_status, state, redundancy, failgroup, failgroup_type, os_mb, total_mb, free_mb from v$asm_disk;
GROUP_NUMBER NAME                           MOUNT_S STATE    REDUNDA
FAILGROUP                      FAILGRO      OS_MB   TOTAL_MB    FREE_MB
           1 DATA_0000                      CACHED NORMAL   UNKNOWN
DATA_0000                      REGULAR       2048       2048       1781
           1 DATA_0001                      CACHED NORMAL   UNKNOWN
DATA_0001                      REGULAR       2048       2048       1782
           1 DATA_0002                      CACHED NORMAL   UNKNOWN
DATA_0002                      REGULAR       2048       2048       1781
GROUP_NUMBER NAME                           MOUNT_S STATE    REDUNDA
FAILGROUP                      FAILGRO      OS_MB   TOTAL_MB    FREE_MB
           2 DATA1_0000                     CACHED NORMAL   UNKNOWN
DATA1_0000                     REGULAR      10240      10240       8222
           2 DATA1_0001                     CACHED NORMAL   UNKNOWN
DATA1_0001                     REGULAR     102400     102400     100382
Thanks,
Mahipal

Change from Internal to External Number range for customer account group

Hi,
We would like to change the number range assignment for a customer account group from internal to external. The external number range assignment check box is greyed out as a few numbers in the range have already been used up. We want to do the internal to external assignemnt change, create a customer of a specific number, and revert the range back to internal assignment. Is this possible?
Appreciate your help.
Ram

Hi,
Please do the below steps:-
(1) Go to XDN1 and click on "Maintain status" button. Note down the current status and change the status to zero. Save.
(2) Again go to SDN1 and click on "Maintain No. Range" button, and change the no. range to external. Save. (if that number range is maintained for multiple years, then make it external for the first yer and for the subsequent years, it will become automatically.)
(3) Then create your customer with specific number.
(4) Then go to XDN1 and click on "Maintain No. Range" button, and change the no. range to internal. Save. (if that number range is maintained for multiple years, then make it internal for the first yer and for the subsequent years, it will become automatically.)
(5) Again go to XDN1 and click on "Maintain status" button. Maintain the current status as the number noted down in step (1) above. Save. (In case number created in step (4) is greater than the number notes in step (1), maintain the number of step (4) in current status.)
Regards,
Gaurav

How to add disk to disk group File System in oracle windows

Hi all
Please any body can help ... I need to know how can I add disk to disk group
I have Oralce 11g Database RAC Setup with 2 nodes node1 and node2 , ASM not enabled , Windows OS 2003 , I have shared storage (G, H and O ) My system administrator add additional SAN Storage (R) to my setup, how can I add the new disk to disk group.
Please help

I have Oralce 11g Database RAC Setup with 2 nodes node1 and node2 , ASM not enabled , Windows OS 2003 , I have shared storage (G, H and O ) My system administrator add additional SAN Storage (R) to my setup, how can I add the new disk to disk group.If ASM is not enabled that mean, Database is running on normal file system?
Hi thanks for you help.,,, But my system admnistrator already did thies steps,... I think my question was not clear enough
I mean after I add the disk group from O.S side what shall I do from Oracle Side? Since From windows explorer I can see the new drive.If the volumes are ready, you can use ASMCA to configure diskgroups.

Backing up ASM Disk Group

How to take the backup of ASM Disk Group?
Regards

user10067119 wrote:
How to take the backup of ASM Disk Group?
RegardsAnd if you are on 11g , you can take the backup of the metadata of the disk group from the ASMCMD's command md_backup . But that's just metadata, information about the disk headers etc. For the data, as Pierre mentioned, you would be using RMAN.
HTH
Aman....

How to move Startup Disk clone from one external drive to another?

I thought this would be a question easily answered on the WWW and easily found via search engines, but so far no luck, hence this question.
Prior to upgrading from Lion to Mountain Lion I followed some very good instructions from Tom Nelson on ask.com (http://macs.about.com/od/backupsarchives/ss/diskbackup.htm) related to using Disk Utility to clone my internal Macintosh HD drive to an external hard drive, making it a bootable drive. I cloned to a very nice LaCie external FW drive that had far more room than that needed for the clone. This drive booted just fine as a startup disk, so mission accomplished:   I have now a bootable clone of my Lion system prior to upgrading to Mountain Lion.
The upgrade to Mountain Lion went well, and now, before I put any additional apps or much additional data on the original internal Macintosh HD drive, I want to use Disk Utility again to clone the drive so I'll have a snapshot of the system right after the upgrade to Mountain Lion.
Questions:
Is there any way to use the same LaCie drive that now holds the Lion startup disk clone to hold the yet-to-be-done Mountain Lion startup disk clone?
If not, how can I move the Lion startup disk clone from the oversized LaCie external drive to a drive more the size of the Lion clone (approx 140G)?   The LaCie drive is far too roomy and nice to have sitting gathering dust for only 140G to be used in an emergency restore.
Thanks in advance for your advice.

Good info Csound1, and thanks.
So my final question (I think): How does one move/copy a startup disk clone from one external drive to another, and still have it bootable on the new external drive?   I'm still considering freeing this LaCie drive up for more dynamic storage and getting another drive for the bootable startup disk clones IF I can move this Lion startup disk clone to a new external drive.
I guess the summary question is:   how does one clone a startup disk clone? As I think about this, and recall the Disk Utility screens, couldn't I simply select the Lion clone on the LaCie FW external drive and do the same operation I did with the original internal Lion drive? Basically the same steps as before but this time the source is the LaCie FW external and the destination is a new external drive?
Thanks again; wonderful forum here with very smart people.

How to move Tablespace from One disk group to another disk group in RAC

Hi All,
I have 11gR2 RAC env on Linux.
As ofnow I have problem with disk group. I have 3 disk group which is almost full - 98%. I have added one NEW disk group and want to move some of the Tablespace(TBS) from OLD disk group to NEW diskgroup and make some free space in OLD disk group.
Can any one suggest me how to move TBS from one disk group to another disk grup without shutting down the instance.
DB is in Noarchive mode.
Thanks...

user12039625 wrote:
Hi Helios,
Thanks for doc id but I am looking for noarchive mode solution. becaues I got ORA-
"ORA-01145: offline immediate disallowed unless media recovery enabled " when run alter database datafile '...' offline.
Hence I am trying something and findout below steps but not sure how useful it is:
1- put tablespace offine
2- Copy the file to new diskgroup using Either RMAN or DBMS_FILE_TRANSFER.
3- Rename the file to point to new location.
4- Recover the file.
5- Bring the file online.
I had move 240M TBS from OLE to NEW.
These steps run successfully so I think this is valid for noarchive mode.Hence want to confirm..so inform me please.
Thanks :)I have doubt in my mind:
1. You database is in noarchivelog mode
2. You're taking tablespace offline
3. Suppose you're moving a file of size 10GB(or any larger filesize) to another disk group
4. Now after moving the file, you're trying to bring the tablespace online............NOW
tablespace will need recovery. if the required data is inside the SGA then it is ok. But if the data has been flushed, then?
if step 2 and 3 has taken significant time, then most probably you'll not be able to bring that tablespace online.
Regards,
S.K.

Best way to move redo log from one disk group to another in ASM?

Hi All,
Our db is 10.2.0.3 RAC db. And database servers are window 2003 server.
We need to move more than 50 redo logs (some are regular and some are standby) which are not redundant from one disk group to another. Say we need to move from disk group 1 to 2. Here are the options we are thinking about but not sure which one is the best from easiness and safety prospective.
Thank you very much for your help in advance.
Shirley
Option 1:
1)     shutdown immediate
2)     copy log files from disk group 1 to disk group2 using RMAN (need to research on this)
3)     startup mount
4)     alter database rename file ….
5)     Open database open
6)     delete the redo files from disk group 1 in ASM (how?)
Option 2:
1)     create a set of redo log groups in disk group 2
2)     drop the redo log groups in disk group 1 when they are inactive and have been archived
3)     delete the redo files associated with those dropped groups from disk group 1 (how?) (According to Oracle menu: when you drop the redo log group the operating system files are not deleted and you need to manually delete those files)
Option 3:
1)     create a set of redo members in disk group 2 for each redo log group in disk group 1
2)     drop the redo log memebers in disk group 1
3)     delete the redo files from disk group 1 associated with the dropped members

Absolutely not, they are not even remotely similar concepts.
OMF: Oracle Managed Files. It is an RDMBS feature, no matter what your storage technology is, Oracle will take care of file naming and location, you only have to define the size of a file, and in the case of a tablespace on an OMF DB Configuration you only need to issue a command similar to this:
CREATE TABLESPACE <TSName>; So the OMF environment creates an autoextensible datafile at the predefined location with 100M by default as its initial size.
On ASM it should only be required to specify '+DGroupName' as the datafile or redo log file argument so it can be fully managed by ASM.
EMC. http://www.emc.com No further commens on it.
~ Madrid
http://hrivera99.blogspot.com

Hi, I have a hard disk failure so to recover my data I am using disk utility to restore the data on an external drive while booting from a second external hard drive. When I perform the operation it gives me an input/output error and stops. Any tips?

Hi, I have a hard disk failure so to recover my data I am using disk utility to restore the data on an external drive while booting from a second external hard drive. When I perform the operation and after having selected both my destination and source drives, the operation begins but soon fails due to input/output error. If I try to create an image of the drive it gives me the same error message. Any help would be much appreciated.

Disk Utility only creates a image of the drive, so it's no help getting exactly what you want, which is your files. If the file structure is messed up or the drive is failing then it's no help.
If you have a external boot drive and you can't access the internal non-booting drive though the typical Finder and windows to transfer your files via drag and drop methods, then you need to install Data Rescue on the external boot drive and it will do as best as it can to recover your files. (works on non-encrypted/non-Filevaulted drives only)
.Create a data recovery/undelete external boot drive
Are you sure you have hard drive failure, or that OS X isn't merely not booting?
Because if the drive is working physically, then there is a host of fixes
..Step by Step to fix your Mac
https://discussions.apple.com/community/notebooks/macbook_pro?view=documents#/

After SN install can't launch Disk Utility from external drive

I recently upgraded 10.5.9 to SN on my white Macbook. First I used Carbon Copy Cloner to clone the old drive onto the replacement drive in an external enclosure. Then I swapped drives so that the new drive is now the internal drive and the old drive is in the enclosure. I then upgraded the OS on the internal drive via SN installer on DVD.
Now when I start from the external drive in OS X 10.5.9 and try to launch Disk Utility from this drive I get a weird error message that "Disk Utility can't be launched because it's incompatible with this architecture." The only things I can think of is that Snow Leopard installs something that globally effects all perhipherals (like new disk drivers?), or that there is something in the enclosure's USB bridge which is causing this, or that installing Snow Leopard breaks the PRAM for older versions of OS X. Tech support for the enclosure vendor tells me there is nothing in the enclosure's USB that would cause this. Any insights into what's happening appreciated.

Thanks for response. Ah, that's it. I was trying to launch it from the applications folder I had dragged to the dock, which was done while running Snow Leopard. That's why (duh!) all the application icons were slashed out. : |

I converted from a PC to a Mac Mini. I have my PC documents backed up on a DVD disk. I have an external DVD drive connected to the Mac Mini. I want to open them up and save them to the Mac, BUT....when I put the DVD disk in the Mac is NOT reading it!

I converted from a PC to a Mac Mini. I have my PC documents backed up on a DVD disk. I have an external DVD drive connected to the Mac Mini. I want to open these documents up from the DVD storage and save them to the Mac, BUT....when I put the DVD disk in the Mac is NOT reading it!

Hi Joe,
Thanks for your quick response. I should add....it worked before. When I previously inserted the two DVDs into this remote drive, and I went into finder, I could click on the "remote device" line and see all my saved documents (excel, word, etc) on the DVD and open them on the Mac. Now I cannot see them, when I try to open them on the Mac, nothing happens, nothing is displayed. I just re-tested the remote DVD drive with a CD and, no problem, it opened up the CD via iTunes and I cold play the CD. SO......I know the remote DVD drive (it's an LG by the way) is fine, it's something to do with some settings on my mini mac,especially where I could open it previously. I do not remember changing any settings since then.
When I go into system preferences and click on CD/DVD it gives me options of how to open up a music CD (default is iTunes), a DVD (default is iMovie), etc. The problem is my DVD is all miscellaneious files/documents. I just want to be able to see them in the finder. I also tried to open them via microsoft word, from the remote disk and again, it could not open the drive, even though some of the documents were microsoft word documents. Again, I was able to open them previously and the DVD is not corrupted in any way.
Any additional advice?
Thank you!

Is it possible to run two different versions of Apple operating system (for ex. 10.6.8 and 10.9) on a MacBook Pro, either on the same disk or from an external hard disk? If so, where would I find the details?

Is it possible to run two different versions of Apple operating system (for ex. 10.6.8 and 10.9) on a MacBook Pro, either on the same disk or from an external hard disk? If so, where would I find the details? (In order to be able to use the older applications no longer supported in 10.9)

If you want to add a second partition to the internal drive (in Disk Utility, select the drive, then open the partition tab and just click the + button), you should first be sure that you will have enough room to accommodate whatever the second volume will be. I am currently doing this for Snow and Mountain Lion.
To get to whatever volume is not the startup disk, restart and hold down option/alt at the chime, which will bring up a selection of the two volumes. Use the left or right arrow keys to select it and then hit enter/return.

Cannot remove Disk Icons from Disk Images or External Drives from Desktop

After years with PPCs, I just upgraded to an Intel Mac. I am now running into a funny problem. The majority of the time (although occasionally it works as it should), I am unable to eject disks. These include disk images from my internal hard drive, external hard drives, and disk images from external hard drives.
I do not get the “Cannot eject this disk because it is in use” error that happens when something is trying to access a file on the disk; instead, nothing happens. I’ve tried ejecting by dragging the icon to the dock, hitting the eject icon in finder, right-clicking and ejecting from there, and even using a terminal-based script that I found on the WEB. None of these do anything- no errors, but the icon hangs about as if nothing happened.
Occasionally I cannot log off at all (I just get the SBBOD); here I have to do a hard reboot. Sometimes I can log off properly. Either way, all seems to be fine when I log back in.
I’ve run Applejack multiple times.
Any suggestions would be most appreciated! Thank you.
OS 10.5.6
2.8 GHz Intel Core Duo iMac with 2 GB factory RAM

The linked macfixitforums topic is over seven years old and isn't applicable. Follow nerowolfe's suggestions. Once you sort things out, see these:
Switching from Windows to Mac OS X,
Basic Tutorials on using a Mac,
MacFixIt Tutorials,
MacTips, and
Switching to the Mac: The Missing Manual, Leopard Edition.
Additionally, *Texas Mac Man* recommends:
Quick Assist.
Welcome to the Switch To A Mac Guides,
Take Control E-books, and
A guide for switching to a Mac.

Creating Target Group from External File

Hello Experts
We need to create target group from external file. (That is to say we will have let's say txt file containing BP that belongs to specific target group and we need to assign these BPs to to specific target group in SAP CRM)
I have searched for it on sdn and found something benefical. I have found BAPI_TARGETGROUP_CREATE, I have checked it but I don't understand how should we use it becuase as far as we understand it just creates target group, we cannot see anything related with Business Partner. How can we relate BPs with the target group we create by this BAPI.
What should we do, is anyone have previous experience about it? or is there a way to do it without using BAPI.
thanks it advance
M.
Edited by: Mehmet Ergul on Jan 22, 2009 11:19 AM

Hi,
You can do this from within the standard Web UI. It's straight out of the box.
Create a profile set and in there create a target group in the target group assignment block just by entering the description of the target group. Then enter edit mode of this target group and click the button "Import Members". Remeber to mark "Change selected target group" unless you want to create a new target group.
/Anders

TS1363 how can i change from disk modae to normal mode as none of the buttons seems to be working ?

how can i change from disk modae to normal mode as none of the buttons seems to be working ?

Have you tried a hard reset of the iPod yet?
How to reset iPod
This should take you out of disk mode and allow the iPod to boot up as it normally does.
B-rock

Disk Group from normal to external in a RAC environment

Similar Messages

Maybe you are looking for