CRS on Raw Device

Hi,
I am trying to install RAC on RHEL3.0 using Raw device. I followed the "Pre-installation" instruction and started CRS installation. I entered "/dev/raw/raw6" when asked to enter "OCR" location. I got an error "An error has occurred while trying to execute the query"
Anybody can help please?

I found the following error in /tmp/crsctl.xxxxx:
Failure in CSS initialization opening OCR.
It is running the command "crsctl check boot". Anyone help? thanks!

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10.1.0.3 on RH4(Centos) + Raw devices + ASM + RAC

Hi,
I'm just wondering if anyone here tried installing a single node RAC on 2 instance using ASM on Oracle 10g (10.1.0.3)?
I am using RH4(CENTOS 4.1), Oracle 10.1.0.3 + CRS 10.1.0.3 on fake raw devices in Linux.
I have been able to install the CRS and Oracle database software successfully.
All CRS services and listener are up and running.
crs_stat command return successful results.
srvctl status nodeapps -n <node_name> also returns successful results.
However, when I attempt to startup the ASM instance, I keep encountering these errors:
ORA-00603:ORACLE server session terminated by fatal error
ORA-27504:IPC error creating OSD context
The ORA-00603 error message will appear immediately in the SQLPLUS prompt when I try to startup ASM instance.
Both errors will be logged in alert.log and trace files, no other useful error messages besides these errors.
When I attempt to create a normal database instance using datafiles on the same machine, these errors also appear again!
So, I figure its got nothing to do with the raw devices since my OCR location and Voting devices are using the same raw devices on Linux.
Anyone did the same thing like me and faced similar problems.... please help.
Cheers

You can use dbca to create ASM instance to get rid of the manual copy business.
In realease 1, you can invoke dbca, choose database instance and walk through still you reach storage clause and choose asm and DBA will create ASM instance on both nodes.
Ensure that you choose cluster install option and all the nodes at the initial stages.

Root.sh failed:Raw devices for OEL 5.3 and 10.2.0.4 RAC

Hi
We have OEL 5.3 and Oracle RAC 10.2.0.4
While installing clusterware and running root.sh we are getting the error
Failed to upgrade the cluster registry.
Further the ocrconfig.log are as below:
ocrconfig_20527.log
Oracle Database 10g CRS Release 10.2.0.1.0 Production Copyright 1996, 2005 Oracle. All rights reserved.
2009-08-04 04:38:41.540: [ OCRCONF][286303376]ocrconfig starts...
2009-08-04 04:38:41.540: [ OCRCONF][286303376]Upgrading OCR data
2009-08-04 04:38:41.615: [ OCRRAW][286303376]propriogid:1: INVALID FORMAT
2009-08-04 04:38:41.616: [ OCRRAW][286303376]ibctx:1:ERROR: INVALID FORMAT
2009-08-04 04:38:41.616: [ OCRRAW][286303376]proprinit:problem reading the bootblock or superbloc 22
2009-08-04 04:38:41.616: [ default][286303376]a_init:7!: Backend init unsuccessful : [22]
2009-08-04 04:38:41.616: [ OCRCONF][286303376]Exporting OCR data to [OCRUPGRADEFILE]
2009-08-04 04:38:41.616: [ OCRAPI][286303376]a_init:7!: Backend init unsuccessful : [33]
2009-08-04 04:38:41.616: [ OCRCONF][286303376]There was no previous version of OCR. error:[PROC-33: Oracle Cluster Registry is not configured]
2009-08-04 04:38:41.619: [ OCRRAW][286303376]propriogid:1: INVALID FORMAT
2009-08-04 04:38:41.619: [ OCRRAW][286303376]ibctx:1:ERROR: INVALID FORMAT
2009-08-04 04:38:41.619: [ OCRRAW][286303376]proprinit:problem reading the bootblock or superbloc 22
2009-08-04 04:38:41.619: [ default][286303376]a_init:7!: Backend init unsuccessful : [22]
2009-08-04 04:38:41.623: [ OCRRAW][286303376]propriogid:1: INVALID FORMAT
2009-08-04 04:38:41.623: [ OCRRAW][286303376]ibctx:1:ERROR: INVALID FORMAT
2009-08-04 04:38:41.623: [ OCRRAW][286303376]proprinit:problem reading the bootblock or superbloc 22
2009-08-04 04:38:41.626: [ OCRRAW][286303376]propriogid:1: INVALID FORMAT
2009-08-04 04:38:41.641: [ OCRRAW][286303376]propriowv: Vote information on disk 0 [dev/raw/raw1] is adjusted from [0/0] to [2/2]
2009-08-04 04:38:41.646: [ OCRRAW][286303376]propriniconfig:No 92 configuration
2009-08-04 04:38:41.646: [ OCRAPI][286303376]a_init:6a: Backend init successful
2009-08-04 04:38:41.663: [ OCRCONF][286303376]Initialized DATABASE keys in OCR
2009-08-04 04:38:41.677: [ OCRCONF][286303376]csetskgfrblock0: clsfmt returned with error [4].
2009-08-04 04:38:41.677: [ OCRCONF][286303376]Failure in setting block0 [-1]
2009-08-04 04:38:41.677: [ OCRCONF][286303376]OCR block 0 is not set !
2009-08-04 04:38:41.678: [ OCRCONF][286303376]Exiting [status=failed]...
Any solution please?
Supriya Sh

There are a couple of errors that doesn't make the clusterware look fine.
There was no previous version of OCR. error:PROC-33: Oracle Cluster Registry is not configured
proprinit:problem reading the bootblock or superbloc 22
This could mean either your cluster registry file is corrupt or you don't have access to the raw devices. Check the access to the shared storage raw device is valid. If this is not true, then make sure you have all your backup files ready.
~ Madrid
http://hrivera99.blogspot.com

How to check space on asm and raw device?

Hi All,
I want to know how to check the space on asm device.
we are using asm device which is on raw partition.
Our archive gets full.I need to check the space on asm archve partiotion.
how can i check the archive destination space?
we are using raw device partition for crs and voting device.
how can we check the space on raw device and how can we know which device is in use and which are not in use
Thanks in advance

4 - 5 raw partitions...
What oracle version?
Install OCR + VOTE in raw device better than OCFS2. if you use 10g to 11gR1.
If use 11gR2,keep OCR + VOTE in ASM Disk Group.
you can check which raw device OCR:
$ ocrcheck
VOTEDISK:
$ crsctl query css votedisk
On 10g if use raw device for OCR + votedisk: recommend 1 file = 250M
11g recommend 1 file = 512M
Good Luck

ASM cannot find the raw devices nor ASM drives

Hi,
We are trying to use ASM on linux. The kernel version is
2.6.9-42.0.10.0.1.ELsmp x86_64.
We tried both raw devices and ASM drives. But after all the tries, the installer simply will not list the disks.
Anybody can help? Thanks.

"I had installed ASM initially on the same CRS, but due to some error during the installation"
This statement means: I had installed ASM on the clusterware, but due to time synchronization error, it didn't got copied on to the 2nd node, and hence I had to uninstall the ASM software.
But the clusterware is still up and running.
Amit.

ASM Spfile on shared raw device

Hi,
I am building two nodes Cluster on Linux 4 update 5. I have successfully created the CRS. Now I am trying to create the ASM instance using the ./dbca. When I select both nodes to manage diskgroup, during the instance creation, and after I enter the SPFILE file location, I am receiving this message
{The /dev/raw/raw10/spfile.asm.ora location is not valid. The directory "[/dev/raw/raw10/] is not a shared system partition across nodes1 and 2.}
The Oracle:dba has the ownership and read/write permission on this partition.
Your help highly appreciated.
Majid

1) Check to make sure that the partition /dev/raw/raw10 is a shared raw device between the nodes (you can do this by using: dd if=/dev/zero of=/dev/raw/raw10 bs=1M count=x from both the nodes while logged in oracle).
2) Since /dev/raw/raw10 is a raw device, you can not specify /dev/raw/raw10/spfile.asm.ora as an SPFILE location. Alternatively, under $ORACLE_HOME/dbs create a link to /dev/raw/raw10 with the name spfile$ORACLE_SID.ora from both the nodes.
ln -s /dev/raw/raw10 $ORACLE_HOME/dbs/spfile$ORACLE_SID.ora (both the nodes)
HTH
Thanks
Chandra

How can I copy datafile (from one Raw device) to another Raw device ???

can anybody tell me how do i copy/move one datafile from one raw device to another raw device.... ?
I am having AIX 5.3 with SAN.
Pls. help me...
regards,
Star Nirav

Hello Hans,
Currently I am using via RMAN... Want to know which one help me....? Is there any size limitation via dd command ? Can I use iocopy instead of dd in AIX ?
man dd

Raw device for oracle 8.1.7 on AIX 4.3.3

Hi there,
I am trying to use a raw device on AIX 4.3.3 for ORACLE 8.1.7.
I have created a raw device /dev/or_system
brw-rw---- 1 oracle dba 54, 1 Mar 04 10:44 or_system
but it is not possible to create a datafile on it :
SVRMGR> create database "GLM"
maxinstances 8
character set "WE8ISO8859P1"
datafile '/dev/or_system' size 150M REUSE
logfile
GROUP 1 ('/oracle/GLM/redo/log1.ora') size 100M,
GROUP 2 ('/oracle/GLM/redo/log2.ora') size 100M,
GROUP 3 ('/oracle/GLM/redo/log3.ora') size 100M,
GROUP 4 ('/oracle/GLM/redo/log4.ora') size 100M;
create database "GLM"
ORA-01501: CREATE DATABASE failed
ORA-01519: error while processing file '?/rdbms/admin/sql.bsq' near line 407
ORA-00604: error occurred at recursive SQL level 1
ORA-01119: error in creating database file '/dev/or_system'
ORA-27038: skgfrcre: file exists
SVRMGR>
The ORA-27028 in exact this situation was reported as a bug in prior ORACLE Versions 8.0.4/ 8.0.5 and had
the bug no. 690228.
But we use as mentioned 8.1.7.
What do I do wrong?
Any suggestions are welcome.
Thank you
Gerhard

Each raw device you create is used as a single data file.
Eg mklv -y 'myfile' <vgname> <number of logical partitians>
Will have two special files associated with them /dev/rmyfile and /dev/myfile. The number of logical partitians will be the size of your datafile subtract 1 meg for overhead.
So, if you were addding the above raw volume to a tablespace, and the lp size was 32 meg, you would
create tabelspace tsname datafile '/dev/rmyfile' size 31 m;
Note the use of rmyfile not myfile.

Is this a bug in APEX 3.0.1 Installation RAC database with RAW device???

Hello,
I am getting the following error when I try to complete approval process.
ORA-20001: Unable to create tablespace. ORA-01
119: error in creating database file '//./FLOW_1.dbf' ORA-27040: skgfrcre: creat
e error, unable to create file OSD-04002: unable to open file O/S-Error: (OS 2)
The system cannot find the file specified.
I checked the alert log for error here is the error in the alert log file.
ORA-1119 signalled during: CREATE TABLESPACE FLOW_1 DATAFILE '//./FLOW_1.dbf'..
and i found the syntax for create tablespace was wrong.
To create a tablespace in RAC with RAW device environment under windows.
it should have forward black slash instead of backward slash "/" without .dbf extension.
so, I changed the syntax i was able to create tablespace through sqlplus.
When APEX tool try to create this tablespace it throws this error..
Old: CREATE TABLESPACE FLOW_1 DATAFILE
'\\.\FLOW_1.dbf' SIZE 10304 K REUSE AUTOEXTEND OFF
EXTENT MANAGEMENT LOCAL AUTOALLOCATE SEGMENT SPACE MANAGEMENT AUTO
error : ORA-01119: error in creating database file '\\.\FLOW_1.dbf'
New:
CREATE TABLESPACE FLOW_1 DATAFILE
'\\.\FLOW_1' SIZE 10304 K REUSE AUTOEXTEND OFF
EXTENT MANAGEMENT LOCAL AUTOALLOCATE SEGMENT SPACE MANAGEMENT AUTO
Tablespace created.
Is it a bug in APEX 3.0.1.??
Is anyone installed APEX in RAC ??
James

Hi,
One observation, Apex is switching the Session ID after one got killed ? I was working on Apex page with browse Item to test open cursor count,
after killing the SID (227) on which the open cursor count was getting increase, it APEX automatically switches to new SID(149) for that session.
Now the problem is even if I have two SID's and one hits the maximum open cursor count, It is not switching to other SID instead the whole application becomes unavailable.
STATNAME SID VALUE USER
opened cursors current 20 14 APEX_PUBLIC_USER
opened cursors current 149 74 APEX_PUBLIC_USER
opened cursors current 194 71 APEX_PUBLIC_USER
opened cursors current 211 5 APEX_PUBLIC_USER
opened cursors current 227 325 APEX_PUBLIC_USER Killed
opened cursors current 244 15 APEX_PUBLIC_USER
opened cursors current 20 14 APEX_PUBLIC_USER
opened cursors current 149 76 APEX_PUBLIC_USER
opened cursors current 194 71 APEX_PUBLIC_USER
opened cursors current 211 5 APEX_PUBLIC_USER
opened cursors current 244 15 APEX_PUBLIC_USER
Please kindly help in this.
Thanks in Advance
Thanks & Regards
Sanjay
Edited by: user11204334 on Dec 8, 2010 1:02 AM

10g ASM on Logical Volumes vs. Raw devices and SAN Virtualization

We are looking at setting up our standards for Oracle 10g non-rac systems. We are looking at the value of Oracle ASM in our environment.
As per the official Oracle documentation, raw devices are preferred to using Logical Volumes when using ASM.
From here: http://download.oracle.com/docs/cd/B19306_01/server.102/b15658/appa_aix.htm#sthr
ef723
"Note: Do not add logical volumes to Automatic Storage Management disk groups. Automatic Storage Management works best when you add raw disk devices to disk groups. If you are using Automatic Storage Management, then do not use LVM for striping. Automatic Storage Management implements striping and mirroring."
Also, as per Metalink note 452924.1:
"10) Avoid using a Logical Volume Manager (LVM) because an LVM would be redundant."
The issue is: if we use raw disk devices presented to ASM, the disks don't show up as used in the unix/AIX system tools (i.e. smit, lspv, etc.). Hence, when looking for raw devices on the system to add to filesystems/volume groups/etc., it's highly possible that a UNIX admin will grab a raw device that is already in use by Oracle ASM.
Additionally, we are using a an IBM DS8300 SAN with IBM SAN Volume Controller (SVC) in front of it. Hence, we already have storage virtualization and I/O balancing at the SAN/hardware level.
I'm looking for a little clarification to the following questions, as my understanding of their responses seem to confict:
QUESTION #1: Can anyone clarify/provide additional detail as to why Logical volumes are not preferred when using Oracle ASM? Does the argument still hold in a SAN Virtualized environment?
QUESTION #2: Does virtualization at the software level (ASM) make sense in our environment? As we already have I/O balancing provided at the hardware level via our SVC, what do we gain by adding yet another level of I/O balancing at the ASM level? Or as in the
arguments the Oracle documentation makes against using Lvm, is this an unnecessary redundant striping (double-striped or in our case triple-striped/plaid)?
QUESTION #3: So does SAN Virtualization conflict or compliment the virtualization provided by ASM?

After more research/discussions/SR's, I've come to the following conclusion.
Basically, in an intelligent storage environment (i.e. SVC), you're not getting a 100% bang for the buck by using ASM. Which is the cat's meow in a commodity hardware/unintelligent storage environment.
Using ASM in a SVC environment potentially wastes CPU cycles having ASM balance i/o that is already balanced on the backend (sure if you shuffle a deck of cards that are already shuffled you're not doing any harm, but if they're already shuffled - then why are you shuffling them again??).
That being said, there may still be some value for using ASM from the standpoint of storage management for multiple instances on a server. For example, one could better minimize space wastage by being able to share a "pool" of storage between mulitiple instances, rather than having to manage space on an instance-by-instance (or filesystem by filesystem) level.
Also, in the case of having a unfriendly OS where one is unable to dynamically grow a filesystem (i.e. database outage required), there would be a definite benefit provided by ASM in being able to dynamically allocate disks to the "pool". Of course, with most higher-end end systems, dynamic filesystem growth is pretty much a given.
In the case of RAC, regardless of the backend, ASM with raw is a no-brainer.
In the case of a standalone instance, it's a judgement call. My vote in the case of intelligent storage where one could dynamically grow filesystems, would be to keep ASM out of the picture.
Your vote may be different....just make sure you're putting in a solution to a problem and not a solution that's looking for a problem(s).
And there's the whole culture of IT thing as well (i.e. do your storage guys know what you're doing and vice versa).....which can destroy any technological solution, regardless of how great it is.

How to setup the raw devices permissions permanantly in 11gr2 on RHEL 5.

Hi All,
Succesfully installed 11gr2 RAC and working fine , but in next boot raw devices permissions revert back to root .
Please advice me to how to setup permissions permanantly as the oracle user.
Regards
San
.

you find the lib on this page:
http://www.oracle.com/technetwork/topics/linux/downloads/rhel5-084877.html
in the AMD64 / Intel em64t Architecture table
this is the direct link
http://oss.oracle.com/projects/oracleasm/dist/files/RPMS/rhel5/amd64/2.0.5/2.6.18-194.el5/oracleasm-2.6.18-194.el5xen-2.0.5-1.el5.x86_64.rpm
hth
p.s. don't forget to mark question as helpful/correct and close the question.

How to create DIR/File on a raw device in RAC environment.

Hi all,
I use a shell script to create DIR and File on a raw device also it creates schema and tablespaces.
I am facing problem in creating DIR and Files on raw device.
One more thing, can multiple tablespaces be created on a raw device.
Thanks & regards,
Sanjeev

Thanks for the response. Please help me further.
About the Script - It asks for the path for creating DIR and uses shell command to create DIR. Later same path and DIR name is used to create Oracle DIR. Now in place of absolute path raw device name is passed. The same script is also used for creating tablespaces and schema.
There is second script that is .sql script that creates external table in the newly created schema. All this has been working fine on single instance Oracle server. we have tested many times but fails in RAC environment when we use raw device.
Question is - If I use filesystem will the external table's flat files and Directories be accessible to all the instances.
I have one application written in java that would be clustered and running on these oracle servers. This application would be accessing those external tables and their flat files. Will there be a problem accessing these flat files accross the instances.
Regards,
Sanjeev.

CREATING RAW DEVICE IN LINUX

HI ALL,
in redhat linux 5 how to format the disk(ex: /opt,/u01,.....) and make it as raw device for ASM installation

DSP_863977 wrote:
HI ALL,
in redhat linux 5 how to format the disk(ex: /opt,/u01,.....) and make it as raw device for ASM installationit is not possible to change a mount /opt or /u01 for ASM storage.
for learning purpose you can learn with vmware server to create a raw device to configure/install ASM.
Refer the link:- shared storage part for linux5/rhel5
http://oracleinstance.blogspot.com/2010/03/oracle-10g-installation-in-linux-5.html
for more information refer the link:-
http://download.oracle.com/docs/cd/B28359_01/server.111/b31107/asmprepare.htm

Content Server 6.40 on Raw Devices

Hi Folks!
We'd like to install a Content Server 6.40 using raw devices (on Linux Suse SLES9).
Do we need to install the MaxDB, if we use raw devices? At this point the InstGuide does not give a clear description of what to do. It looks we can use the raw devices directly without having a database instance. Is this right?
Is there any disadvantage compared to using the access via file system and DB?
Any hint is appreciated...
Best regards
Torsten

Hi Torsten,
As far as i know SAP Content Server use MaxDB or a File System, I have use it with MaxDB with good results, anyhow.... read the following for details,
http://help.sap.com/saphelp_nw04s/helpdata/en/40/32104211625933e10000000a155106/content.htm
Regards
Juan
Please reward with points if helpdul

Using raw device

Good morning,
I would like to make some i/o test with a database version 10g, actually I have the redo log on standard zfs filesystem (cooked), I would like to
migrate this redo log on raw device without recreating the database, is this possible ?
Thanks for your help
Fabrice Chapuis

One more question, in case of node failure , redo on raw device are more critical for a recover than if they were on a filesystem ?More critical? Or more difficult?
Redo is critical, period. Does not matter whether you use a cooked file system or a raw device.
As for difficulty - that depends on what you are attempting to do. If you want to treat the raw device as a file system, that will be difficult as it it not a file system. (which kind of begs the question as to treat it like a file system when it is not?)
From a RMAN perspective - a device is a device. RMAN does not care.
From a DB perspective - that is why ASM exist. To remove the complexities of using raw devices, and eliminate the requirement of needing to use an external Volume Manager. And provide the DBA with a familiar SQL*Plus interface and SQL commands to administer ASM.
It may seem difficult at first - but anything that needs a learning curve to go through, tends to seem difficult in the beginning. All you need to do is learn the basics and grasp the concepts.. and that +"difficulty"+ disappears.

CRS on Raw Device

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