Oracle10g RAC with ASM for stretch cluster

Assuming suitable network between sites is in place for RAC interconnect (e.g. dark fibre / DWDM), does it make sense (or is it possible) to stretch a RAC cluster across 2 sites, using ASM to mirror database files between SAN storage devices located at each site? The idea being to combine local high availability with a disaster recovery capability, using hardware that is all active during normal operation (rather than say a single RAC cluster on one site with Data Guard to transport data to the other site for DR).
Or, for a stretch cluster, would SAN / OS implemented remote mirroring be a better idea? (I'd have thought this is likely to incur even more overhead on the network than ASM, but that might be dependant on individual vendors' implementations).
Any thoughts welcome!
Rob

Please refer the thread Re: 11GR2 ASM in non-rac node not starting... failing with error ORA-29701
and this doc http://docs.oracle.com/cd/E11882_01/install.112/e24616/presolar.htm#CHDHAAHE

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11g r2 non rac using asm for sun cluster os (two node but non-rac)

I am going to install grid installation for non-rac using asm for two node sun cluster environment..
How to create candidate disk in solaris cluster (sparc os) to install grid home in asm.. please provide me the steps if anyone knows

Please refer the thread Re: 11GR2 ASM in non-rac node not starting... failing with error ORA-29701
and this doc http://docs.oracle.com/cd/E11882_01/install.112/e24616/presolar.htm#CHDHAAHE

SQLLoader issues of Oracle RAC with ASM

One of our client wants to use Oracle RAC with ASM for our application, i just want to know if there would be any two-phased commit transactions and SQL*Loader issues in ASM.
Database is Oracle 10g

ASM works only at storage layer and has nothing to do with:
- distributed transactions
- client executable that connects to database instance: SQL*Loader, SQL*Plus, etc.
RAC has also nothing to do with distributed transactions: a RAC database is a single database with multiple instances but still a single database; there is no need to use distributed transactions because you have a RAC database.
Edited by: P. Forstmann on 24 févr. 2011 13:27
Edited by: P. Forstmann on 24 févr. 2011 13:31

Manual of adding the new node on RAC with ASM

Hello everbody
Someone have the manual of the adding a new node on RAC with ASM for Solaris ?
regards
Spaulonci

Go to http://www.oracle.com/technology/documentation/index.html, select your unknown database version and search for a manual named 'Oracle Clusterware and Oracle Real Application Clusters Administration and Deployment Guide'.
Werner

How to Create Manual Standby for a Oracle 11g RAC with ASM to Single Instan

Hi All,
I have a task to configure a Single Instance Standby Database with ASM for 2-node Primary RAC+ASM database.
Version using : 11.1.0.6 Oracle 11g --- *" STANDARD EDITION "* Please note datagaurd will not be supported in standard edition.
Primary database - 2 -Node RAC using ASM storage (All datafiles, redologs, controfile and archive logs)
Need to setup a single instance standby database manually and than using scripts to transfer the archive logs from primary server to standby server to do recovery time to time.
Please let me know if there are any configuration document(s) which can help me to set the manual standby? or need your kind help to give your valuable ideas how to go in above situation.
Thanks in advance

Niall Litchfield wrote:
El DBA wrote:
Well if the archive logs are stored in ASM on the primary nodes, you almost definitely want to be using RMAN to access them. Then to transfer between primary and standby there are many options, this is essentially the step that Data Guard takes care of - so if you (and I) are running Standard Edition, this is the part to "worry" about.
I'm not really sure what you mean by this:
As in standard edition the archive destination will be on ASMI don't think the Edition of Oracle (Standard or Enterprise) dictates where and how you store your archive logs, but it's possible I've misunderstood what you mean...SE dictates that database storage for RAC will be ASM, including archive log files. Anything else is not officially supported. I haven't tested but it may be that you can use LOG_ARCHIVE_DUPLEX_DEST to specify a local filesystem for archive log files as well.
If that doesn't work you'll have to script rman "backup as copy" jobs regularly and then transport the results of that.
Niall Litchfield
http://www.orawin.info/
By the way, it seems Robert has been pretty helpful, it's polite to give him some points dude. And since this is your thread, not mine, give him a "helpful" from me too :p
El DBA
Incidentally if you are forced down the RMAN backup as copy route then this will likely throw your current backup retention strategy somewhat, you'll need to think carefully about when an archivelog can be deleted following backup, how many times it might be backed up and so on. I do understand, and have argued for, the use of SE RAC. I also understand and have argued for and implemented manually managed standby a number of times. However by the time your primary database is a RAC instance and you need a standby for DR etc then you really have to look very seriously at whether Standard Edition is still the right investment or not. You will be spending a lot of DBA time managing and troubleshooting this, and you will find that it is less reliable than the off the shelf solution. I suspect that you are very close to the point where an EE installation becomes a worthwhile investment here.
Niall Litchfield
http://www.orawin.info/

Best practice for oracle 10.2 RAC with ASM

Did any one tried/installed Oracle 10.2 RAC with ASM and CRS ?
What is the best practice?
1. separate home for CRS, ASM and Oracle Database?
2. separate home for CRS and same home for ASM and Oracle Darabase?
we set up the test environment with separate CRS, ASM and Oracle database homes, but we have tons of issues with the listener, spfile and tnsnames.ora files. So, seeking advise from the gurus who implimeted/tested the same ?

I am getting ready to install the 10gR2 database software (10gR2 Clusterware was just installed ) and I want to have a home for ASM and another for database as you suggest. I have been told that 10gR2 was to have a smaller set of binaries that can be used for the ASM home ... but I am not sure how I go about installing it. The first look at the installer does not seem to make it obvious...Is it a custom build option?

RAC with ASM

Hi,
We will be implementing oracle 10g RAC with ASM.
Just wondering how many production systems are running on ASM.
Are there any known issues with ASM for performance and maintaince.
Please advice.
Thanks in advance.

Check more information about the difference between OCFS and ASM in metalink doc
Automatic Storage Management (ASM) and Oracle Cluster File System (OCFS) in Oracle10g
Doc ID: Note:255359.1
ASM provides many advantages over pure raw device, I believe it's fairly standard to use ASM together with RAC in 10g. And perhaps some files on OCFS2 that ASM doesn't handle.

Oracle10g RAC with Oracle clusterware

Hi,
We are installing Oracle10g RAC with Oracle clusterware with ASM on Solaris 10. Does anybody have a installation/configuration manual for this combination.
Thanks,
Murtuja

Sun would not recommend using Oracle 10g RAC without Sun Cluster. Setup for that configuration would be found in the Sun Cluster Data Service for Oracle 10g RAC and the Oracle installation manuals.
The installation of Oracle Clusterware alone would be documented in Oracle's manuals. If you have any problems with that, you are better off asking Oracle.
Regards,
Tim
---

How to convert single instance10g db to 11gR2 RAC with ASM

Hi,
I need your help to decide the plan about how to convert single instance 10g database to 11gr2 rac with asm.
I can have about 6 to 8 hours of downtime to upgrade and move to rac with asm.
db size is about 1.5tb and on AIX.
here is my plan....
1) install 11gr2 rac with asm on two nodes
2) verify rac installation and clustered asm
3)install 10g oracle binaries( yes 10g )
4) shutdown production db ( machine prod )
5) make copy of production and restore on 1st node ( using shadow image , so it's quick and its file system )
6) upgrade db to 11g ( still of file system )
7) after successful upgrade, move to asm ( rman backup )
8) add another node
does it look okay ? OR is there a better approach to save time?
can someone help me ?
Thanks...

Thanks ...
So here is what I thought... suggest if something is not right...
1) install 11gr2 grid infra on node A and B with ASM
2) stop CLUSTER ON BOTH NODES.
3) shutdown prod db on 10g ( downtime starts )
4) take rman cold backup
5) restore rman backup on node A on ASM ( as if single instance 11g , no rac parameters )
6) mount and run upgrade script for 11g, then open db with 11
7) after successful upgrade, shutdown db node A
8) change all rac related parameters, spfile,undo,redo for rac environment on both nodes
9) open db in rac environment
can I do this way ?
My only question is, even though I installed rac on node A and B, in step 5 and 6 I'm using only node A as if it is single instance. Is it possible ?
if it is then I'm good to go...
Thanks for all suggestions.

Binding Luns in red hat linux5 while installing RAC with ASM

Hi All,
I am in the process of installing RAC with ASM. Our OS team have presented the shared LUN's on the cluster nodes. Now that i need to bound/map them to the raw partitions. I did the below step. Could you please let me know the next steps to be done for the binding to be completed?
# cat /etc/udev/rules.d/60-raw.rules
# This file and interface are deprecated.
# Applications needing raw device access should open regular
# block devices with O_DIRECT.
# Enter raw device bindings here.
# An example would be:
# ACTION=="add", KERNEL=="sda", RUN+="/bin/raw /dev/raw/raw1 %N"
# to bind /dev/raw/raw1 to /dev/sda, or
# ACTION=="add", ENV{MAJOR}=="8", ENV{MINOR}=="1", RUN+="/bin/raw /dev/raw/raw2 %M %m"
# to bind /dev/raw/raw2 to the device with major 8, minor 1.
ACTION=="add", KERNEL=="/dev/emcpowerg", RUN+="/bin/raw /dev/raw/OCR.dbf %N"
ACTION=="add", KERNEL=="/dev/emcpowerd", RUN+="/bin/raw /dev/raw/VOTING.dbf %N"
ACTION=="add", KERNEL=="/dev/emcpowerf", RUN+="/bin/raw /dev/raw/ASM1 %N"
ACTION=="add", KERNEL=="/dev/emcpowerc", RUN+="/bin/raw /dev/raw/ASM2 %N"
ACTION=="add", KERNEL=="/dev/emcpowere", RUN+="/bin/raw /dev/raw/ASM3 %N"
ACTION=="add", KERNEL=="/dev/emcpowerb", RUN+="/bin/raw /dev/raw/ASM4 %N"
# cd /etc/udev/rules.d/
# udevtest /dev/raw/OCR.dbf | grep mode
# raw -qa
# start_udev
Starting udev: OK
# raw -qa
# ls -l /dev/raw
ls: /dev/raw: No such file or directory
Thanks for all your support,
Sravan

hi
you should have got feedback on your other post refereing to the same question
Bindind raw partitions in Red hat linux5 for Oracle RAC with ASM install
regards,
hub

Does managing Oracle 10g RAC with ASM require full root access?

We currently have three entirely separate support areas, Unix, Storage and DBA. We're now considering using Oracle 10g RAC with ASM and as part of the assessment trying to work out if we can still draw similar support boundaries. I know that installing RAC and configuring ASM requires root access but will DBA continue to need root access to manage & support RAC? If so, does anyone know if the commands they need can be RBAC'd or if we just need to share root access going forwards. I've had a look at a number of docs including http://download.oracle.com/docs/cd/B19306_01/rac.102/b14197/toc.htm. which is fairly informative but none of them seem to mention the requirement for root access on Solaris. I'm guessing they just assume that it's available, but that's not generally the case in our environment.
All advice / info welcome!

I would have thought that the only reason you would need root access once RAC and ASM had been set up would be to add more disks to the ASM configuration. This would be needed to change the ownership on the raw LUNs or to make additions to metasets (SVM/Oban) or diskgroups (VxVM/CVM). Beyond that, I can't imagine needing root access.
I'm sure others will chime in if they can think of other reasons!
Regards,
Tim
Edited by: Tim.Read on Jun 3, 2008 2:25 AM

How do i licence a two node RAC with ASM infrastructure

AM trying to estimate the licensing of two node RAC with ASM as storage manager and GRID control as management tool

Hi,
Oracle license depends on lot of things, Edition of Oracle your running standard or enterprise, the optional packges you need and etc.
Read through http://docs.oracle.com/cd/E11882_01/license.112/e10594/editions.htm#BABDJGGI
also if you license named users or processor. You can get the price for the from online oracle store
https://oraclestore.oracle.com/OA_HTML/ibeCCtdMinisites.jsp?language=US&ref=ibeCZzpHome.jsp

12.1.3 EBS single node 11.2.0.3 database to 2 node RAC with ASM

Hi,
We are planning to convert single node local/ordinary file system 11.2.0.3 database to 2 node RAC with ASM.
Please help me in creating the roadmap for the same.
e.g
1. Create the shared raw file system
2. Create diskgroup for ASM
3.. Convert the local file system to ASM first
etc, etc
This is the first big task hence need expert guidance.

Please refer to:
Using Oracle 11g Release 2 Real Application Clusters with Oracle E-Business Suite Release 12 (Doc ID 823587.1)
Oracle E-Business Suite Release 12 High Availability Documentation Roadmap (Doc ID 1072636.1)
Thanks,
Hussein

Install 11gR2 on Linux 6 with ASM for production environment ?

Hi Experts
Plz I hope someone could help me, I am planning to Install Oracle 11g R2(11.2.0.3)
on Oracle Linux 6 with ASM for a production environment.
My doubt is: Is it a stable combination ? someone has experience working with this version ? is there some Oracle documents to support this implementation on Production ?
I have been installing and working with 11g R2 on Oracle Linux 5 (5.7,5.8) with ASM for some time and I didn’t have problems, it’s very stable combination
My situation is this: Our client insist on use Oracle Linux 6 on a new Oracle implementation, even when we told her Oracle Linux 5 its Very stable, so that’s why I am asking for some advice, because it’s a production environment 7x24.
Thank you for your time and advice
J.A.
Edited by: J.A. on 7/05/2013 07:29 AM

Hmmmm:
-Question:
My doubt is: Is it a stable combination ? someone has experience working with this version ? is there some Oracle documents to support this implementation on Production ?-Your Answer:
I have been installing and working with 11g R2 on Oracle Linux 5 (5.7,5.8) with ASM for some time and I didn’t have problems, it’s very stable combination-My answer:
Your answer +1
If you have installed it before but only a lower OS version, you know how to install it, no differences between 5.7-5.8 and 6.

DR type restore of 10gR1 RAC with ASM database to another cluster

Hi,
We have a requirement to restore the image copy of our production database to another location. The production database is a 10-node 10gR1 RAC deployment with ASM. The image copy is in the FRA.
We want to restore this image copy onto a 2-node 10gR1 RAC cluster, which is also running a development environment. We have so far used the 'backup copy copy of database' command to pipe the image copy from the FRA to an NFS mounted filesystem. We plan to restore (and convert the names) the files from here. I have a list of steps we need to undertake - like adding the production database metadata on the development cluster into CRS, restore the spfile and controlfile, restore and convert the datafiles from the production ASM diskgroup to the development ASM diskgroup.
has anyone out there done this? Are there any nasty 'gotchas' or pitfalls?
Please, tell me your pain so I can spare it myself :o)
regards
Dilbert

user562223 wrote:
We are planning to take cold backup through RMAN. But now the issue is that if something going wrong with the storage then both the diskgroup on the same storage will not be mounted.
What should be the backup & recovery strategy for this scenario? How to bring the server back online?The strategy depends entirely on the risk analysis and assessment. Do you need to be able to recover the database to the moment just before it crashed? Do you need point-in-time recovery? What are the availability requirements? Etc.
Databases can be quite diverse in nature. It can be fairly static with very few changes, to very dynamic to totally dynamic. In some cases, the database only needs to be restored as a "container" (structures with no data) as that is all the processes need and as these will supply the data. In other cases, the entire database with all committed transactions to the second before the crash is needed. In a few cases, you may want to use Data Guard and standby/clone databases instead.
There is no single set of rman instructions that you can copy-and-paste to implement any of these diverse backup and recovery strategies. You need to determine and define your backup, restore and availability requirement first - before looking at which rman commands to use and in what sequence, where and when.

Oracle10g RAC with ASM for stretch cluster

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