Oracle Rac on San Storage

Hi
We are in the midst of defining a process for a 2 node installation on a san storage Device. Oracle 11.2 on Rhel 5.
What is the recommended implementation process for the shared storage.
We would like the mirroring to stay at the storage level.
* NFS without ASM
* NFS with ASM
* LUN with ASM
* LUN without ASM
Any other if any.
I have gone through the documentation, it does give options, however does not say the best practices.
Thanks in advance everyone and apologize if there is already a post on this and I'm repeating this.

UDP is still relatively slow (due to Ethernet itself) compared to storage protocols over fibre channels and Infiniband (which can be bonded/multipath'ed too). HBA and HCA cards all have at least 2 ports.
The basic issue is that Ethernet was never designed with storage protocol considerations. Or even Interconnect considerations. Case in point, Oracle developed the IB protocol RDS (Reliable Datagram Sockets) because UDP was not efficient and scalable enough. From Oracle performance reports to the OFED committee when ratifying RDS as a standard IB protocol, it was 2x as fast, consuming 50% less CPU, than UDP.
Port to port latency for an Infiniband fabric layer can be as lows as 70ns (Wall Street IB implementations as a real world example). Most HPC centres using Infiniband has latencies of around 100ns.
Ethernet is not the only solution. Despite what vendors like Cisco are keen to push "as the only solution so help us Donald Davies".
So it is not as much a religious debate as which-is-the-best-o/s debates often turn into, as much as one of ignorance and Ethernet vendors exploiting and enforcing that.
There are sound reasons Infiniband as Interconnect Family grew from a 4% market share 10 years ago, to over a 40% market share today, in the world of top 500 HPC clusters in the world. And Ethernet's market share has been decreasing.

Similar Messages

HOW TO CONFIGURE ORACLE RAC USING EMC STORAGE MULTIPATHING

Dear Team,0
Am in process of installation of ORACLE RAC 10.2.0.3 using cluvfy 10.2.0.3 with EMC storage (multipathing)
need ur help..i had done with following things...
1)i had done with prerequisite steps..
2)user equivalence .
3)cluvfy checks...
4)in process to install ORACLE RAC but the storage assign to server is EMC Clarion but the disk assign is having same name but diffferent
major number minor number...
pls let me know..
1)major number minor number with repect to voting ,ocr and asm disk..
2)while configuring EMC storage how same mojor and minor number are assign(if possible compltee steps)
Thanks
Upendra
9820011875

Hi buddy,
You should start reading the installation guide for Your plataform. it's well explained there.
Regards,
Cerreia

Is it possible to install Oracle RAC without shared storage

Dear All,
I would like to seek for your advice.
I got two different servers. We call it node 1 and node 2. And two different instances name.
Node 1 -> instance name as "ORCL1"
Node 2 -> instance name as "ORCL2"
For the system we need Oracle RAC active-active cluster mode. Our objective is to have 2 replicated databases, in other words we need 2 instances of the same database automatically replicated for 100% up time to the Application server. We have 2 separate database machines and 2 application server machines. We need our application server to connect to any of the databases at any point of time and be having a consistent data on both database machines. We only need the database to be in a cluster mode, we won't need the OS to be in a cluster. There is no shared storage in this case.
Can this be done? Please advice.

you should review RAC concepts, and the meaning of instance and database
For the system we need Oracle RAC active-active cluster mode.RAC = single database with multiple instances all accessing the same shared storage, no replication involved
Our objective is to have 2 replicated databases, in other words we need 2 instances of the same database automatically replicated for 100% up time to the Application server.what you describe here is = multiple databases with multiple instances, replicated between each other
We have 2 separate database machines and 2 application server machines. We need our application server to connect to any of the databases at any point of time and be having a consistent data on both database machines. We only need the database to be in a cluster mode, we won't need the OS to be in a cluster. There is no shared storage in this case.no shared storage = no RAC
you will have two seperate databases synchronizing continuously
you can use for example Streams / Advanced Replication (with multi-master configuration)
if you dont insist on an active-active configuration, you can also use Data Guard for building a standby database

CRS10g patchset을 적용한 이후 Veritas SF Oracle RAC 관련 MODULE

Problem Description
다음은 SF(Storage Foundation) Oracle RAC를 구성하기 위하여 Oracle CRS
PATCHSET 등을 적용하기 전에 SF Oracle RAC Veritas libraries 를 ORACLE_HOME에 설치해야 한다는 내용입니다.
또한, ORACLE CRS 패치 Version 을 올리면서 Veritas 쪽 관련하여 필요한
Veritas skgxp module 등이 설치 과정에 빠져 있거나 Veritas library file들이 overwrite되어 에러를 만나는 경우를 볼 수 있습니다.
이런 관점에서 Veritas storage foundation 을 설치하고 oracle CRS stack을
설치 또는 갱신하는 과정에서 만날 수 있는 에러에 대해 원인 및 해결방안을 알아봅니다.
에러 증상
다음은 CRS 10.2.0.3.0 Patchset이 설치되면서 Veritas library가 overwrite 되면서 발생하는 에러임.
Veritas clusterware 5.0 not recognized by Oracle due to the fact that Veritas libraries over written with crs 10.2.0.3.0 patchset installation.
The cssd.log shows:
[ CSSD]2007-11-08 03:28:02.603 [5] >TRACE: clssnm_skgxnmon: skgxn init failed,
rc 1 [ CSSD]2007-11-08 03:28:02.603 [1] >TRACE: clssnm_skgxnonline: Using vacuous skgxn monitor [ CSSD]2007-11-08 03:28:02.604 [1] >TRACE:
clssnmNMInitialize: misscount set to (30), impending reconfig threshold set to
(26)
The cssd.log should show this
[CSSD]2007-09-20 14:14:06.008 [5] >TRACE: clssnm_skgxninit: initialized
skgxn version (2/0/Veritas Cluster Server MM <<== USING VERITAS SKGXN LIBRARY
Changes
CRS patchset 의 installation 이후에 Veritas library file들이 overwrite되는 문제 발생.
Explanation
Environment :
Oracle Server - Enterprise Edition - Version: 10.2.0.3.0
OS : Solaris Operating System (SPARC 64-bit)
이 예제는 sun os에 근거함.
OS에 따라 해결책이 약간 다를 수는 있습니다.
원인
새로운 CRS patch 관련 변경이 있은 이후에 Veritas SFRAC 관련 module이 인식되지 못하는 문제 야기됨.
Installing and Configuring SF Oracle RAC Software
Veritas 에서 제공하는 Storage/Clusterware 관련한 절차는 이 문서에서 생략합니다.
Install CD 안의 installsfrac 스크립트 수행 session 에서 RAC software installation을 하는 과정이 들어갑니다.
Veritas가 제공하는 SF Oracle RAC 5.0 installation 문서를 보면 다음과 같은 내용이 포함되어 있습니다.
아래 내용에는 SF Oracle RAC component 들을 설치하는 과정만 기술합니다.
# cd /cdrom/storage_foundation_for_oracle_rac
# .installsfrac -configure
Note: Do not run root.sh yet, but return to the installsfrac session from step 15.
19 In the installsfrac session, press Return. The installsfrac utility now verifies
the database software installation, copies the SF Oracle RAC libraries to $ORACLE_HOME, and relinks Oracle on each node in the cluster.
다음은 위와 같은 installsfrac 스크립트를 수행한 이후에 Installer가 5.0 SF Oracle RAC library file들을 ORACLE_HOME으로 Copy하는 과정이고, Oracle library file들을 relink합니다.
자세한 절차는 다음의 site에서 step 별로 확인을 할 수 있습니다.
http://ftp.support.veritas.com/pub/support/products/DBE_Advanced_Cluster_for_Oracle_RAC/288502.pdf
[ 참조 ]
Performing Post-upgrade tasks for SF Oracle RAC 5.0 MP1.
To Relink Oracle 10g R1 or R2 using the installer.
installsfrac를 invoke하기 위해 다음과 같이 stage가 있다고 가정하고 invoke를 합니다.
# cd /opt/VRTS/install
# ./installsfrac -configure
Oracle environment information verification 과정입니다.
Oracle Unix User : oracle
Oracle Unix Group : oinstall
Oracle Clusterware (CRS) Home: /app/oracle/orahome
Oracle Release: 10.2
Oracle Patch Level: 0.1
Oracle Base: /app/oracle
Oracle Home: /app/oracle/orahome
Is this information correct: [y,n,q] (y)
Verifying binaries in /app/oracle/orahome on galaxy ...ok
Verifying binaries in /app/oracle/orahome on nebula ...ok
Copying SFRAC libskgxn on galaxy ......................ok
Copying SFRAC libskgxn on nebula ......................ok
Copying SFRAC ODM library on galaxy ...................ok
Copying SFRAC ODM library on nebula ...................ok
Copying SFRAC libskgxp on galaxy ......................ok
Copying SFRAC libskgxp on nebula ......................ok
Relinking Oracle on galaxy ............................ok
Relinking Oracle on nebula ............................ok
Oracle Relinking is now complete.
Solution Description
Article
http://seer.entsupport.symantec.com/docs/288502.htm
다음은 CRS patchset 적용 후, 문제 해결 위해 Oracle 10g 를 manual 하게 relink하는 과정입니다.
방법1. Relinking Oracle 10g (Using the command line)
[ 10g R1 ]
For Oracle 10gR1, enter one set of the following commands
a. For 32bit oracle:
# cp /opt/VRTSvcs/rac/lib/libskgxn2_32.so
/opt/ORCLcluster/rac/lib/libskgxn2.so
$ cp /opt/VRTSvcs/rac/lib/libskgxp10_ver23_32.so
$ORACLE_HOME/lib32/libskgxp.so
$ ln -s /usr/lib/libodm.so libodm10.so
b. For 64bit oracle:
# cp /opt/VRTSvcs/rac/lib/libskgxn2_64.so
/opt/ORCLcluster/rac/lib/libskgxn2.so
$ cp /opt/VRTSvcs/rac/lib/libskgxp10_ver23_64.so
$ORACLE_HOME/lib32/libskgxp.so
$ ln -s /usr/lib/amd64/libodm.so libodm10.so
[ 10g R2 ]
For 10gR2, enter one set of the following commands:
a. For 32bit oracle:
# cp /opt/VRTSvcs/rac/lib/libskgxn2_32.so
/opt/ORCLcluster/rac/lib/libskgxn2.so
$ cp /opt/VRTSvcs/rac/lib/libskgxp10_ver25_32.so
$ORACLE_HOME/lib32/libskgxp.so
b. For 64bit oracle:
# cp /opt/VRTSvcs/rac/lib/libskgxn2_64.so
/opt/ORCLcluster/rac/lib/libskgxn2.so
$ cp /opt/VRTSvcs/rac/lib/libskgxp10_ver25_64.so
$ORACLE_HOME/lib32/libskgxp.so
방법2. Relinking Oracle10g (Installer)
위 Article에서 Relinking Oracle 10g after upgrading SF Oracle RAC 부분을 참조하여 해결하는 것도 가능합니다.
여기서 2개의 node name이 galaxy 와 nebula 라고 가정합니다.
1. Invoke installsfrac once again:
# cd /opt/VRTS/install
#./installsfrac -configure
2. Enter the system names when prompted:
Enter the system names separated by spaces on which to configure
SFRAC: galaxy nebula
3. Navigate to the "Install and Relink Oracle" menu.
a. Select the appropriate Oracle 10g version (3):
1) Oracle 10gR1
2) Oracle 10gR2
b. Select "Relink Oracle" (3) from the menu:
1) Install Oracle Clusterware (CRS)
2) Install Oracle RDBMS server
3) Relink Oracle
b) [Go to previous menu]
c. From the menu displayed, enter the required information. For example:
Enter Oracle UNIX user name: (oracle) oracle
Enter Oracle UNIX group name: [b] (oinstall) oinstall
Enter Oracle base directory: [b] /app/oracle
Enter absolute path of CRS Home directory: [b] /app/crshome
Enter absolute path of Database Home directory: [b] /app/oracle/orahome
Enter Oracle Bits (64/32) [b] (64) 64
d. Confirm your responses in the verification screen. The installer copies the SF 5.0 Oracle RAC libraries to /opt/ORCLcluster, where it expects libskgxn.
Oracle environment information verification
Oracle Unix User: oracle
Oracle Unix Group: oinstall
Oracle Clusterware (CRS) Home: /app/crshome
Oracle Release: 10.2
Oracle Bits: 64
Oracle Base: /app/oracle
Oracle Home: /app/oracle/orahome
Is this information correct? [y,n,q] (y)
galaxy
Copying /opt/VRTSvcs/rac/lib/libskgxn2_64.so
/opt/ORCLcluster/lib/libskgxn2.so ........... success
nebula
Copying /opt/VRTSvcs/rac/lib/libskgxn2_64.so
/opt/ORCLcluster/lib/libskgxn2.so .............. success
galaxy
Copying /opt/VRTSvcs/rac/lib/libskgxp10_ver25_64.so to
/app/oracle/orahome/lib/libskgxp10.so ........... success
Removing /oracle/10g/lib/libodm10.so ............ success
Linking /opt/VRTSodm/lib/amd64/libodm.so /app/oracle/orahome/
lib/libodm10.so ... success
Setting permissions oracle:oinstall /app/oracle/orahome/lib/
libskgxp10.so ... success
nebula
Copying /opt/VRTSvcs/rac/lib/libskgxp10_ver25_64.so to
/app/oracle/orahome/lib/libskgxp10.so ........... success
Removing /oracle/10g/lib/libodm10.so ............ success
Linking /opt/VRTSodm/lib/amd64/libodm.so /app/oracle/orahome/
lib/libodm10.so ... success
Setting permissions oracle:oinstall /app/oracle/orahome/lib/
libskgxp10.so ... success
e. Enter "q" at the next prompt to leave the installer now that CRS setup
tasks are complete.
4. Bring the CSSD resource online. Enter:
# hares -online cssd -sys galaxy
# hares -online cssd -sys nebula
5. Confirm that CRS in online. Enter:
$CRS_HOME/bin/crs_stat -t
6. Bring online the oracle resources configured under VCS. If they're directly controlled by CRS, you may run the CRS commands to start the instance.
[ 참고 ]
CRS patch 적용 이후에 HP server와 Veritas 환경에서 CRS stack 이 올라오지
않는 경우를 추가 설명해 봅니다.
참고로, Veritas 쪽에서 Node status를 check해 주는 tool을 제공하고 있고,
CRS의 init.cssd 에서 그 tool을 사용하도록 init.cssd 에 patch가 되어야 한
다는 내용의 문서가 있습니다.
그 작업을 위한 patch를 역시 Veritas에서 제공하고 있습니다.
CRS patchset 이나 CRS 를 위한 cumulative patch를 하기 전에 SFRAC 를 위해
init.cssd에 patch를 적용해야 합니다.
Symptoms
1. postrootpatch.sh hangs when apply a patch[set]
2. prerootpatch.sh hangs when rollback a patch[set]
자세한 사항은 다음의 문서에서 안내하고 있습니다.
http://seer.entsupport.symantec.com/docs/281875.htm
Late Breaking News (LBN) - Updates to the Release Notes for Veritas Storage
Foundation (tm) and High Availability Solutions 5.0 and 5.0 Maintenance
Pack 1
on HP-UX 11iv2 and cross references to product documentation
환경
Veritas on HP server
이 patch 는 HP-UX 11i 에만 해당함.
예방책
Before you run the root.sh script, you need to add the init.cssd.patch.
a. Open another window on the system where you are running the installer
b. Log in as superuser
c. Change to the directory where the patch is to be copied:
For Oracle 10gR1:
# cd $CRS_HOME/css/admin
# cp /opt/VRTSvcs/rac/patch /init.cssd-10gR1.patch .
For Oracle 10gR2:
# cd $CRS_HOME/css/admin
# cp /opt/VRTSvcs/rac/patch /init.cssd-10gR2.patch .
d. Run the following command to install the patch:
For Oracle 10gR1:
# patch < init.cssd-10gR1.patch init.cssd
For Oracle 10gR2:
# patch < init.cssd-10gR2.patch init.cssd
e. Run the root.sh script. For example:
# cd $CRS_HOME
# ./root.sh
This starts the CRS daemons on the node where you enter the command.
References
http://ftp.support.veritas.com/pub/support/products/DBE_Advanced_Cluster_for_Oracle_RAC/288502.pdf
http://ftp.support.veritas.com/pub/support/products/DBE_Advanced_Cluster_for_Oracle_RAC/283979.pdf
http://seer.entsupport.symantec.com/docs/281875.htm
<Note:467753.1> Title : Veritas clusterware 5.0 not recognized by Oracle
due to the fact that Veritas libraries over written with crs 10.2.0.3 patchset installation

Oracle 10g RAC - two nodes - change SAN storage - only one node up

Hi all,
We're using Oracle 10g with Linux Red Hat.
We want to migrate to another SAN storage.
The basic steps are:
node 1:
1. presents the volume disk and create partition
2. asmlib create disk newvolume
3. alter diskgroup oradata add disk newdisk
4. alter diskgroup oradata drop disk OLDDISKOTHERSAN
But THE NODE 2 DOWN.
we want start the NODE 2 only after ALL operations in node 1 finish.
What's you opinion? Any impact?
Can I execute the oracleasm scandisks on node 2 after?
thank you very much!!!!

modify the commands just slightly...
1. presents the volume disk node1 AND node2
2. create partition node1 [if necessary?? ]
3. asmlib create disk newvolume [node1] ## I am not a fan of and have never had to use ASMlib - however, apparently you do...
4. asmlib scandisk... [node2]
[on one of the nodes]
alter diskgroup oradata add disk1 newdisk rebalance power 0
alter diskgroup oradata add disk2 newdisk rebalance power 0
alter diskgroup oradata add disk3 newdisk rebalance power 0
alter diskgroup oradata add disk{n} newdisk rebalance power 0
alter diskgroup oradata drop disk1 OLDDISKOTHERSAN rebalance power 0
alter diskgroup oradata drop disk2 OLDDISKOTHERSAN rebalance power 0
alter diskgroup oradata drop disk3 OLDDISKOTHERSAN rebalance power 0
alter diskgroup oradata drop disk{n} OLDDISKOTHERSAN rebalance power 0
alter diskgroup oradata rebalance power {n}
You can actually do this with BOTH nodes ONLINE. I was involved in moving 250TB from one storage vendor to another - all online - no downtime, no outage.
And before you actually do this and break something - TEST it first!!!

Oracle 10g RAC using ASM - Storage Issue

I’ve an issue related to Oracle 10g RAC.
I’ve 2 node cluster each being Dell 2850 Server with RHEL 4.0
I’ve EMC CX300 SAN storage with following partitions
/orasoft     10 Gb          OCFS2 File system
/oracrs          2 Gb          OCFS2 File system
/orabackup      100 Gb          OCFS2 File system
The datafiles are on ASM which is not directly visible in OS.
I’ve common Oracle Home installed in /orasoft/db_1 which is shared by both nodes in cluster.
I’ve faced an issue recently related to EMC storage.
The /orasoft partition displays 1.4 Gb space available using df command.
With both nodes sharing the common Oracle Home (/orasoft/db_1), when ever I try to touch a file I get an error as No Space left on device. I’m unable to start any service with the same reason.
Is this setup correct ??
Can anyone help me with this storage issue ??

Need a clarification here...what do you mean by "Storage System"...do you mean a server/node or the SAN storage system. If you are referring to a server/node's local storage, then it would NOT be possible for use by RAC, since the disk space has to be shared among the nodes.
Here is what you can do:
- Create two partitions/devices (for example Disk_1 and Disk_2) in the SAN storage
- Create a ASM disk group which would mirror Disk_1 to Disk_2.
Again, please note that the partitions have to be visible and be accessible read/write from both the nodes/servers.
HTH
Thanks
Chandra Pabba

Guide to install Oracle 11gr2 on solaris 10 wiht SAN storage

Hey expert,
Anyone install Oracle 11g2 RAC on solaris 10 with SAN storage before. Any link and proper document that i can follow. Appreacite you guy can assist me.
Regard
liang
Edited by: 816734 on Sep 15, 2011 2:32 AM

Please check the following link :
http://www.oracle.com/pls/db112/portal.portal_db?selected=11&frame=#solaris_installation_guides
Anytime!

RAC 10G With SAN storage

Dear all
I am trying to install Oracle 10gR2 Database, buy using Cluster Hardware with 2 nodes and RAID SAN Storage, i was thinking i can go with oracle RAC, but is there any one can advice me if thats ok, and provide me with step-by-step installation manual, knowing that i am using Windows 2003 64-bit As OS, or if any can help me to install the best solution for my Case.

Check following link it will help
Best Practices for Oracle Database 10g RAC on Microsoft 64bit Windows
RAC Installation Lab

Oracle RAC with QFS shared storage going down when one disk fails

Hello,
I have an oracle RAC on my testing environment. The configuration follows
nodes: V210
Shared Storage: A5200
#clrg status
Group Name Node Name Suspended Status
rac-framework-rg host1 No Online
host2 No Online
scal-racdg-rg host1 No Online
host2 No Online
scal-racfs-rg host1 No Online
host2 No Online
qfs-meta-rg host1 No Online
host2 No Offline
rac_server_proxy-rg host1 No Online
host2 No Online
#metastat -s racdg
racdg/d200: Concat/Stripe
Size: 143237376 blocks (68 GB)
Stripe 0:
Device Start Block Dbase Reloc
d3s0 0 No No
racdg/d100: Concat/Stripe
Size: 143237376 blocks (68 GB)
Stripe 0:
Device Start Block Dbase Reloc
d2s0 0 No No
#more /etc/opt/SUNWsamfs/mcf
racfs 10 ma racfs - shared
/dev/md/racdg/dsk/d100 11 mm racfs -
/dev/md/racdg/dsk/d200 12 mr racfs -
When the disk /dev/did/dsk/d2 failed (I have failed it by removing from the array), the oracle RAC went offline on both nodes, and then both nodes paniced and rebooted. Now the #clrg status shows below output.
Group Name Node Name Suspended Status
rac-framework-rg host1 No Pending online blocked
host2 No Pending online blocked
scal-racdg-rg host1 No Online
host2 No Online
scal-racfs-rg host1 No Online
host2 No Pending online blocked
qfs-meta-rg host1 No Offline
host2 No Offline
rac_server_proxy-rg host1 No Pending online blocked
host2 No Pending online blocked
crs is not started in any of the nodes. I would like to know if anybody faced this kind of a problem when using QFS on diskgroup. When one disk is failed, the oracle is not supposed to go offline as the other disk is working, and also my qfs configuration is to mirror these two disks !!!!!!!!!!!!!!
Many thanks in advance
Ushas Symon

I'm not sure why you say QFS is mirroring these disks!?!? Shared QFS has no inherent mirroring capability. It relies on the underlying volume manager (VM) or array to do that for it. If you need to mirror you storage, you do it at the VM level by creating a mirrored metadevice.
Tim
---

ORACLE TABLESPACE CREATION PROBLEM IN SAN STORAGE FROM SOLARIS X86 Machine

Hi everybody,
i am new in this forum and i am also new in solaris operating system with SAN storage.
I am using oracle database 10g in a sun x86 machine with solaris 5.10.
While i am trying to create a tablepsace in SAN storage in a mount point of 2.1TB the following error occurs:
SQL> create tablespace test datafile '/appbrm01/oracle/oradata/test1.dbf' size 100M;
create tablespace test datafile '/appbrm01/oracle/oradata/test1.dbf' size 1M
ERROR at line 1:
ORA-01119: error in creating database file '/appbrm01/oracle/oradata/test1.dbf'
ORA-27037: unable to obtain file status
Intel SVR4 UNIX Error: 79: Value too large for defined data type
Additional information: 45
SQL>
But when i am trying to create a tablepsace in SAN storage in a mount point of 1.8TB it works fine.
So, please if any body can help me to solve this issue i will be very glad
Thanks
Reshad

Also, Datapump from NAS device would perform slow.
Take a look at this:
10gR2 "database backup" to nfs mounted dir results in ORA-27054 NFS error
Note:356508.1 - NFS Changes In 10gR2 Slow Performance (RMAN, Export, Datapump) From Metalink.

How to change permissions on shared storage to install Oracle RAC on vmware

Hello:
- I am trying to install Oracle RAC using vmware.
- But when I try to change permissions for the shared storage,
the owner and group of the shared storage does not change.
- Has some else installed Oracle RAC onto vmware ?
- I am using Oracle RAC 10.2.0, solaris 5.10 x86
Thanks
Jlem

I have successfully installed RAC on vmware following this article, maybe you can give it a try,
Oracle 10g RAC On Linux Using VMware Server
http://www.oracle-base.com/articles/10g/OracleDB10gR2RACInstallationOnCentos4UsingVMware.php

Oracle 10.2.0.4 on SAN Storage.

Hi Experts,
I am in the process of installing new Oracle 10g database for my
production database which is a part of upgrade, on HP SAN storage with RAID5.
We run oracle apps 11i and this is also going to upgrade to R12.
My concern is how shall i put the different oracle database files on the filesystem with different mount points in order to get the maximum benefit. (like which file shoud be on same mount point, how many points should be there etc..)
Kindly suggest my the best practice for this.
Thanks in advance.

Thanks,
Do you mean that i can put oracle_home and database on a single mount point?
Because if follow OFA everything is going to be on a single mount point.
and for example in order to get controlfile and redolog redundant (as recommneded) i would put each copy of them on another mount point.
But here does not i need it?
Thanks.

Oracle rac raw device as shared storage

Hi,
i m new to oracle rac,
and i wish to instlall 11g r1 RAC on my laptop having linux 4 as platform (on vmware) ,
for that i prepare 4 partition for that (on node1)
/dev/sdb1 - for ocr
/dev/sdb2 - for voting disk
/dev/sdb3 - for asmdisk group
/dev/sda5 - fro asmdisk group
by assuming external redundacy for ocr and voting disk i kept only one disk
and i configured following in /etc/sysconfig/rawdevices
/dev/raw/raw1 /dev/sdb1 -- ocr
/dev/raw/raw2 /dev/sdb2 -- voting disk
/dev/raw/raw3 /dev/sdb3 -- asmdisk group
/dev/raw/raw4 /dev/sdb5 -- asmdisk group
and my question is how node2 can understat these raw device as shared storage?
thanks for any support

hi thanks for your suggestion ,
this may be ok for VMware , but what about for non-VMWare environment?
how can i make raw device as shared storage?
one more, all the docs that i followed on net , configured node1 partitions as shared storage.
please help me in this regards

Oracle RAC Storage Migration - HP EVA to HP EVA

Hi,
We are in the process of migrating from an old HP EVA4000 to a new HP EVA6400. We have migrated most of the systems that had storage presented from the EVA4000 with the exception of our Oracle RAC databases and wanted to check to see if anyone knew of any gotchas before we proceeded.
We are using CA to replicate the LUNs that are presented to the Oracle cluster. My plan is to shut down the database and all associated RAC services, disable CRS then halt the servers. I will then present the CA replicated LUNs to the servers and initiate a failover. I will then restart the servers and check that the LUNs have appeared from the 6400 before manually restarting CRS and the databases. I will then re-enable CRS before rebooting again to check that everything comes up automatically.
Does this sound correct? Has anyone done this before?
Thanks in advance.
Phil

Seems reasonable, but can't be certain unless you test. Make sure you backup OCR, VOTE, Database before you change the storage allocation.
How big is the database ? How long will your downtime be ?
It may be cleaner to just reinstall CRS and restore the database from backup ?
Are you using ASM ? If so then you could just add new devices to ASM, migrate the data, then remove the old devices.

Help with Oracle 10g Client Connectivity from Linux to IBM SAN storage

Hello Oracle Experts,
This is my first post. My client is having oracle 10g database up and running in IBM SAN storage.
We have some NMS tools running in Red Hat Linux version 5. So, these tools require connectivity to Oracle database which is residing in SAN storage connected with the Fibre cables.
How do I establish the connectivity from Linux to SAN storage. If would be glad if you can explain me the steps and also if there is any pre-installation/post-installation, patches and procedures involved.
If it is IP based network we normally give the IP address of the host running the database server. I have no idea about SAN storage connected with Fibre cable.
Please guide me to establish the connectivity from linux 5 to SAN.
Thanks.
Regards,
RaviShankar.

user13153556 wrote:
Hi Rajesh,
Actually I will not be touching the Oracle instance SAN box directly. I will only access the database from another machine. I my case it is Linux box.
So, my question is how do you make the Oracle Client in Linux box to connect to Oracle instance running in another non ip based machine SAN storage.Install Oracle client on this Linux machine ..
Make sure you have network connectivity from linux machine to database server. You need to connect to server where db instance is running and you need not to bother about SAN storage.
make tns entry into client $ORACLE_HOME/network/admin/tnsnames.ora file.
Use sqlplus to connect to database using client.
Regards
Rajesh

Oracle Rac on San Storage

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