Migration of crs file system to raw

Dear all,
My CRS is currently on a file system and i am looking for a way to migrate it to raw. Can anybody in the house give me a note on how to go about this or give me a guide on it. Your prompt response will be highly appreciated.
kind Regards.

This is RAC thread.....
Here is EBS only topics
;-)

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EXT3 to RAW file system

hi all,
i have RHEL as 4 and i have 3 partitions on 200gb hard disk d01 d02 d03 with ext3 file system now i want to change the d01 ext3 file system to raw partition for implementing ASM can some one help me out that would be great help thanks very much in advance.

1. make a backup of your database
2. decide if you want to use ASMlib or raw devices
the following is the text in an article on installing oracle 10g (http://www.oracle.com/technology/pub/articles/chan-ubl-vmware.html#5)
A raw device mapping is required only if you are planning on creating ASM disks using standard Linux I/O. An alternative to creating ASM disks is to use the ASM library driver provided by Oracle. You will configure ASM disks using ASM library driver later.
Perform the following tasks to map the raw devices to the shared partitions created earlier. The raw devices have to bind with the block devices each time a cluster node boots.
Add the following lines in /etc/sysconfig/rawdevices.
/etc/sysconfig/rawdevices
/dev/raw/raw1 /dev/sdc1
/dev/raw/raw2 /dev/sdd1
/dev/raw/raw3 /dev/sde1
To make the mapping effective immediately, execute the following commands as the root user:
# /sbin/service rawdevices restart
Assigning devices:
/dev/raw/raw1 --> /dev/sdc1
/dev/raw/raw1: bound to major 8, minor 33
/dev/raw/raw2 --> /dev/sdd1
/dev/raw/raw2: bound to major 8, minor 49
/dev/raw/raw3 --> /dev/sde1
/dev/raw/raw3: bound to major 8, minor 65
done
# chown oracle:dba /dev/raw/raw[1-3]
# chmod 660 /dev/raw/raw[1-3]
# ls -lat /dev/raw/raw*
crw-rw---- 1 oracle dba 162, 3 Nov 4 07:04 /dev/raw/raw3
crw-rw---- 1 oracle dba 162, 2 Nov 4 07:04 /dev/raw/raw2
crw-rw---- 1 oracle dba 162, 1 Nov 4 07:04 /dev/raw/raw1
As the oracle user, execute
rac1-> ln -sf /dev/raw/raw1 /u01/oradata/devdb/asmdisk1
rac1-> ln -sf /dev/raw/raw2 /u01/oradata/devdb/asmdisk2
rac1-> ln -sf /dev/raw/raw3 /u01/oradata/devdb/asmdisk3
Modify /etc/udev/permissions.d/50-udev.permissions. Raw devices are remapped on boot. The ownership of the raw devices will change to the root user by default upon boot. ASM will have problem accessing the shared partitions if the ownership is not the oracle user. Comment the original line, “raw/*:root:disk:0660” in /etc/udev/permissions.d/50-udev.permissions and add a new line, “raw/*:oracle:dba:0660.”
/etc/udev/permissions.d/50-udev.permissions
# raw devices
ram*:root:disk:0660
#raw/*:root:disk:0660
raw/*:oracle:dba:0660

Raw volumes vs file system

Hi,
How can I can know whether I am using file system or Raw volumes for storing the data
thanks
Vijay

cherukuri wrote:
Hi,
How can I can know whether I am using file system or Raw volumes for storing the data
if/when ls works it is a cooked (not raw) filesystem
Handle:      cherukuri
Status Level:      Newbie
Registered:      Nov 15, 2010
Total Posts:      56
Total Questions:      41 (25 unresolved)
so many questions & so few answers.
Edited by: sb92075 on Jun 21, 2011 9:46 PM

Moving spfile from non-asm to asm file system

Hi All
We are migrating non-asm file system to asm file system, we are held up in moving the spfile from non-asm file system to asm file system ...
we tried the below method
Recreate SPFILE on ASM diskgroup
SQL> create pfile='c:\initTEST.ora' from spfile;
File created.
SQL> create spfile='+DGRP2/spfileTEST.ora' from pfile='c:\initTEST.ora';
File created.
after this we started both the running instance and asm instance
but after starting the instance TEST we saw the instance still using spfile of non-asm file system
what is the correct way of moving the spfile from non-asm to asm file system..
Regards
Hariharan.T

You need to perform this first:
First rename the $ORACLE_HOME/dbs/spfileTEST.ora to spfileTEST.ora_old
create initTEST.ora in dbs location with below contents:
Also i recommend you to recreate the spfile in ASM as it might not be in good shape.
When ever you start the oracle instance there is a specific order to find the oracle pfile/spfile
1. O_H/dbs/spfile<SID>.ora
2. O_H/dbs/init<SID>.ora
3. O_H/dbs/spfile.ora
4. O_H/dbs/init.ora
in your case instance always finds spfileTEST.ora in dbs location (non -ASM) and will stop looking further. If you remove it our of the way it will find initTEST.ora which will redirect to spfile present in ASM.
NOTE: As per your earlier update you created spfile in ASM after puttin spfile='+DG...' in the initTEST.ora..
If you start the instance with this SPFILE you will be getting "maxmimum cursors limit exceeded" error.
-Ravi.M

ASM Vs File System - Who is best, Why and How ..

How the ASM is better than traditional file system ..? What is the reason behind oracle recommends ASM when we can achieve the same performance in traditional file system ...? Can some one throw some lights on this to understand the purpose of ASM in a better ways when comparing traditional file system.

ASM is better for two basic reasons.
Management and administration. It allows the DBA far better control, with features not found, when using a cooked file system. For example - you need to move the database from an old drive to a newly installed drive on the server. With ASM you can do this while the database is up, running and in-use.
Performance. ASM disks are block devices that are accessed using direct I/O. This bypasses a lot of moving parts that you will typically find in a cooked file system. Raw/direct disk I/O is faster than doing I/O via a kernel file system driver (that may or may not write that data to file on disk).
The con is that ASM is another s/w layer that needs to be installed, and which needs server resources to run. On the modern server, that is not a problem. It's not like running on a couple of sub Ghz CPUs with only 4Gb of system RAM. PCs today have more resources and faster resources than servers of a decade ago.
So there is not much reason for not using ASM.
I'm using ASM on all my database servers. From very small (dual core standalone) to large (12 node RAC). ASM has numerous times saved the proverbial day when there was storage issues, and required storage changes. I would need a lot of sound and hard convincing not to use ASM by default for an Oracle database in today's environment.

Convert Raw Device to file system based file systems for datafiles [HP-UX]

Hello experts,
Once again in seek of guidance..
I am in the process of migrating my database (Oracle 7.2.3 on HP-UX 10.20 to Oracle 8.1.7 64-bits on HP-UX 11).
Amongst one of our steps is to convert our RAW Device datafiles to File System based files within the same server and version - Oracle 7.2.3 on HP-UX 10.20.
E.g. /dev/vg00/rlvol1 to become /d01/oradata/cmtdb/tbs1.dbf
Is this something possible?
Can i just do the following:
a. Shutdown database (normal)
b. dd if=/dev/vg00/rlvol1 of=/d01/oradata/cmtdb/tbs1.dbf bs=20k
c. chown oracle7:dba /d01/oradata/cmtdb/tbs1.dbf
d. svrmgrl> startup mount
e. alter database rename file '/dev/vg00/rlvol1' to '/d01/oradata/cmtdb/tbs1.dbf'
f. alter database open.
Thanks very much for your replies.
Please tell me about possible problems that i can anticipate.
Best Regards
Yogeeraj

Hello experts,
Once again in seek of guidance..
I am in the process of migrating my database (Oracle 7.2.3 on HP-UX 10.20 to Oracle 8.1.7 64-bits on HP-UX 11).
Amongst one of our steps is to convert our RAW Device datafiles to File System based files within the same server and version - Oracle 7.2.3 on HP-UX 10.20.
E.g. /dev/vg00/rlvol1 to become /d01/oradata/cmtdb/tbs1.dbf
Is this something possible?
Can i just do the following:
a. Shutdown database (normal)
b. dd if=/dev/vg00/rlvol1 of=/d01/oradata/cmtdb/tbs1.dbf bs=20k
c. chown oracle7:dba /d01/oradata/cmtdb/tbs1.dbf
d. svrmgrl> startup mount
e. alter database rename file '/dev/vg00/rlvol1' to '/d01/oradata/cmtdb/tbs1.dbf'
f. alter database open.
Thanks very much for your replies.
Please tell me about possible problems that i can anticipate.
Best Regards
Yogeeraj

How to converrt files on RAW devices in ASM to non ASM file system.

Hi all,
I have on problem .
Is that possible to migrate ASM raw files system to non ASM file .
If possible plzz describe them.
If not also please tell y not?
Thanks in addvance
Regards
Krishna

Hi,
I totally agree with Mahir. And I just want to share one thing:
Use %U to generate guaranteed unique names :
For backupsets, %U means: %u_%p_%c
For an image copy of a datafile, %U means: data-D-%d_id-%I_TS-%N_FNO-%f_%u
For an image copy of an archived redolog, %U means: arch-D_%d-id-%I_S-%e_T-%h_A-%a_%u
For an image copy of a control file, %U means: cf-D_%d-id-%I_%u
Thank you

Uninstall Oracle Culster (RAC) & Oracle Database with Raw File System (LVM)

Hello,
I have configured "Oracle RAC" with "Database" on Hp Unix 11.23 Platform. The shared storage is based on "raw" file system,which has mounted through "SAN" Storage. We have used total 18 LV (logical volumes) for oracle & clusterware.
By mistaken, I have configured wrong "Public, Private IP Address & Virtual IP Addresses" during RAC installation,thus my oracle "crs" is not working perfectly. So, is it possible to modify the "public,private & Virtual" IP Addresses? If Yes, provide me the step by step modification link.
Moreover, I would like to know certain steps to uninstall entire "Oracle Clusterware & Database." Kindly do the needful the "uninstallation" steps & is it necessary to remove & recreate LVM partitions, on which "oracle crs & database" has installed?
Advanced Thanks,
Nishith Vyas

Hi,
You haven't told anything about version...
By mistaken, I have configured wrong "Public, Private IP Address & Virtual IP Addresses" during RAC installation,thus my oracle "crs" is not working perfectly. So, is it possible to modify the "public,private & Virtual" IP Addresses? If Yes, provide me the step by step modification link.BTW, this thread has information that can drive You to this change:
Re: Is it possible?
Moreover, I would like to know certain steps to uninstall entire "Oracle Clusterware & Database." Kindly do the needful the "uninstallation" steps &Again... No versions, but You this thread can drive You to this
How to cleanup / remove RAC installation (CRS,RDBMS,ASM)
is it necessary to remove & recreate LVM partitions, on which "oracle crs & database" has installed?I don't think so. If all steps on uninstalling procedure don't work, You'll can try "zero" the information on the raw device using dd.
Hope it helps,
Cerreia

How to migrate 11gr2 standby database from file system to ASM

Hi,
I have 11gR2 data guard setup of 2 node RAC primary and stand alone standby database.
Primary RAC uses ASM, and stand alone standby DB uses normal file system for data files and archive logs. I want to migrate the stand alone standby DB from file system to ASM.
If you have any ideas or documents on it, kindly please share with me.
Thanks in advance,
Mahipal

Mahi wrote:
Hi Fran,
Thanks a lot for the quick reply. I have another question, I want to have standby in ASM; but ASM home is grid home(CRS+ASM) in 11gr2.
I don't want to configure CRS now for standby, only want to have ASM storage. s it possible to install the grid home only for ASM and not for CRS?
On a stand-alone system, there are still CRS/Grid components that are a part of the ASM install. You cannot NOT install it.
>
Thanks,
Mahi

How to Create a OLAP Cube in DEV using SSAS from Raw file system backup from Production?

How to Create a OLAP Cube in DEV using SSAS from Raw file system backup from Production? I dont have a .abf file available. Two paritions in production are missing data. We were able to get back file system backup which contains the files for these two paritions.
How do I create a cube in Dev using this file system backup.
we are on SQL Server 2008R2.
Thanks,

How to Create a OLAP Cube in DEV using SSAS from Raw file system backup from Production? I dont have a .abf file available. Two paritions in production are missing data. We were able to get back file system backup which contains the files for these two paritions.
How do I create a cube in Dev using this file system backup.
we are on SQL Server 2008R2.
Thanks,

Migrating Essbase cube across versions via file system

A large BSO cube has been taking much longer to complete a 'calc all' in Essbase 11.1.2.2 than on Essbase 9.3.1 despite all Essbase.cfg, app and db settings being same (https://forums.oracle.com/thread/2599658).
As a last resort, I've tried the following-
1. Calc the cube on the 9.3.1 server.
2. Use EAS Migration Wizard to migrate the cube from the 9.3.1 server to the 11.1.2.2 server.
3. File system transfer of all ess*.ind and ess*.pag from 9.3.1\app\db folder to 11.1.2.2\app\db folder (at this point a retrieval from the 11.1.2.2 server does not yet return any data).
4. File system transfer of the dbname.esm file from 9.3.1\app\db folder to 11.1.2.2\app\db folder (at this point a retrieval from the 11.1.2.2 server returns an "unable to load database dbname" error and an "Invalid transaction status for block -- Please use the IBH Locate/Fix utilities to find/fix the problem" error).
5. File system transfer of the dbname.tct file from 9.3.1\app\db folder to 11.1.2.2\app\db folder (and voila! Essbase returns data from the 11.1.2.2 server and numbers match with the 9.3.1 sever).
This almost seems too good to be true. Can anyone think of any dangers of migrating apps this way? Has nothing changed in file formats between Essbase 9.x and 11.x? Won't not transferring the dbname.ind and dbname.db files cause any issues down the road? Thankfully we are soon moving to ASO for this large BSO cube, so this isn't a long term worry.

Freshly install the Essbase 11.1.2.2 on Window server 2008 r-2 with the recommended hardware specification. After Installation configure 11.1.2.2 with the DB/Schema
Take the all data back up of the essbase applications using script export or directly exporting from the cube.
Use the EAS Migration wizard to migrate the essbase applications
After the Migrating the applications successfully,reLoad all the data into cube.
For the 4th Point
IBH error generally caused when there is a mismatch in the index file and the PAG file while e executing the calculation script .Possible solutions are available
The recommended procedure is:
a)Disable all logins.
alter application sample disable connects;
b)Forcibly log off all users.
alter system logout session on database sample.basic;
c)Run the MaxL statement to get invalid block header information.
alter database sample.basic validate data to local logfile 'invalid_blocks';
d)Repair invalid block headers
alter database sample.basic repair invalid_block_headers;
Thanks,
Sreekumar Hariharan

Single node file system to 3 node rac and asm migration

hi,
we have several utl_file and external table applications running on 10.2 single node veritas file system. and we want to migrate to 3 node RAC ASM environment. what is the best practices in order to succeed this migration during this migration. thanks.

1. Patch to 10.2.0.3 or 10.2.0.4 if not already there.
2. Dump Veritas from any future consideration.
3. Build and validate the new RAC environment and then plug in your data using transportable tablespaces.
Do not expect the first part of step 3 to work perfectly the first time if you do not have experience building RAC clusters.
This means have appropriate hardware in place for perfecting your skills.
Be sure, too, that you are not trying to do this with blade or 1U servers. You need a minimum of 2U servers to be able
to plug in sufficient hardware to have redundant paths to storage and for cache fusion and public access (a minimum of 6 ports).
And don't let any network admin try to convince you that they can virtualize the network paths: They can not do so successfully
for RAC.

Is database using File system, RAW devices or ASM?

Hi there
Is is possible to find out if the database is using File system, RAW devices or ASM for storage?
I think for ASM, we can tell by querying the V$DATAFILE view if it has ' DATA ' or something like that (a name that has ' ' prefixed to it). Is this the only way? How about other sotrage types (RAW and Filesystem)?
Thanks in advance!

user12033597 wrote:
I think for ASM, we can tell by querying the V$DATAFILE view if it has ' DATA ' or something like that (a name that has ' ' prefixed to it). Is this the only way? How about other sotrage types (RAW and Filesystem)?V$DATAFILE or DBA_DATA_FILE
Raw depends on your OS - in *nix, likely something like /dev/sdc1
ASM depends on ASM and will include + and will follow an ASM pattern, such as described http://docs.oracle.com/cd/B19306_01/server.102/b14200/clauses004.htm
File depends on OS - in *nix, likely start with a '/' and NOT be in /dev or /proc. In Winders start with C:\ or some other disk path.
Nicely discussed in the docs in the Administrators Guide found at http://tahiti.oracle.com

Raw devices versus Cluster File Systems in RAC 10gR2

Hi,
Does anyone using cluster file systems in a RAC 10gR2 installation, specifically IBMs GPFS?
Ive visited a company that is running RAC 10gR2 in AIX over raw devices. Why someone would choose to use raw devices , with all the problems to administer , when all the modern file systems are so powerful? Is there any issues when using cluster file systems + RAC? Is there considerable performance benefits when using raw devices with RAC ?
I´ve always used Oracle stand alone instances over file systems (since version 7) , and performance was always very good. I´ve tested raw devices almost 10 years ago , and even in that time (the hardware today is much better - SAN , 15K rpm disks , huge caches - and the file systems software today is much better) the cost to administer it does not compensate the benefits (only 5% more faster than file systems in Oracle 7).
So , besides any limitations imposed by RAC , why use raw devices nowadays ?
Regards,
Antonio Belloni

Hi,
spontaneously, my question would be: How did you eliminate the influence of the Linux File System Cache on ext3? OCFS2 is accessed with the o_direct flag - there will be no caching. The same holds true for RAW devices. This could have an influence on your test and I did not see a configuration step to avoid it.
What I saw, though, is "counter test": "I have tried comparing simple file copies from an OS level and the speed differences are not apparent - so the issue only manifests itself when the data is read via an oracle db." and I have no good answer to that one.
Maybe this paper has: http://www.oracle.com/technology/tech/linux/pdf/Linux-FS-Performance-Comparison.pdf - it's a bit older, but explains some of the interdependencies.
Last question: While you spent a lot of effort on proving that this one query is slower on OCFS2 or RAW than on ext3 for the initial read (that's why you flushed the buffer cache before each run), how realistic is this scenario when this system goes into production? I mean, how many times will this query be read completely from disk as opposed to use some block from the buffer? If you consider that, what impact does the "IO read time from disk" have on the overall performance of the system? If you do not isolate the test to just a read, how do writes compare?
Just some questions. Thanks.

Is it possible to rescue drive files and also format RAW file system into previous NTFS?

Do you have any suggestion for me to format RAW file system to NTFS and also rescue my remained drive files? These external hard drive files are made for the business presentation in the next Monday. I have prepared them for nearly a week.
But, this morning, the external hard drive that had held these files became RAW and needed to be formatted. I could not lose them and prepare another week to make these files again. There was no enough time. Please, give me some advice to get them back as
many as possible. Thank you in advance!

RAW file system error will not always indicate a failed or seriously damaged drive. So, do not give up rescuing your drive data easily. Just plunge this RAW drive to you computer again and run drive data recovery software to rescue your
original data back as much as possible before you format this drive from RAW to NTFS.
Just open your computer and search for a right data recovery tool to go on.
Get more data recovery clues here:
http://blog4mark.blogspot.com/2012/11/convert-raw-to-ntfs-without-data-loss.html
If you are still suspicious, just search and read more related threads/articles to k now more.

Migration of crs file system to raw

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