Oracle11gR2 SCAN IP address (RAC implementation)

Hello
If you refer to [http://download.oracle.com/docs/cd/E11882_01/rac.112/e10743/preparing.htm] (2 Day + Real Application Clusters Guide
11g Release 2) it has assigned three IP addresses for SCAN (while it uses two servers)
during installation it creates three more IP addresses on those two nodes and defines three SCAN_LISTENER for them (one of servers has two SCAN_LISTENER and another one has one SCAN_LISTENER)
My question is if we wanna implement RAC on more that two servers , do we need assign more than three IP addresses ? if yes what is rate of SCAN IP addresses number to server number ?
thanks

You will always have three dedicated IPs for SCAN, regardless of the number of nodes in your cluster.
Definition:
http://download.oracle.com/docs/cd/E11882_01/rac.112/e10717/glossary.htm#CBACGHFE
Explanation:
http://download.oracle.com/docs/cd/E11882_01/rac.112/e10717/intro.htm#sthref44
-Mark

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SCAN IP address in RAC not accessible by clients

I have a 2 node Oracle RAC configuration running on Solaris 10 update 10 x86 with Oracle 11.2.0.1 DB installed on each node in a lab environment.
I am having problems connecting to the SCAN IP address with clients (Microsoft Access client talking to the Oracle RAC). I can only connect with clients using the IP addresses of the individual nodes in the cluster. This is my first RAC install. We are NOT using DNS only the /etc/hosts file. I see the IP address that is used as the cluster IP address associated with only one node of my two which is correct I believe.
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oracle@mortlach srvctl status scan_listener
SCAN Listener LISTENER_SCAN1 is enabled
SCAN listener LISTENER_SCAN1 is running on node elijahcraig
oracle@mortlach srvctl status scan
SCAN VIP scan1 is enabled
SCAN VIP scan1 is running on node elijahcraig
oracle@mortlach lsnrct status
bash: lsnrct: command not found
oracle@mortlach lsnrctl status
LSNRCTL for Solaris: Version 11.2.0.1.0 - Production on 27-APR-2011 18:35:57
Copyright (c) 1991, 2009, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=LISTENER)))
STATUS of the LISTENER
Alias LISTENER
Version TNSLSNR for Solaris: Version 11.2.0.1.0 - Production
Start Date 27-APR-2011 13:33:40
Uptime 0 days 5 hr. 2 min. 17 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Parameter File /opt/11.2.0/grid/network/admin/listener.ora
Listener Log File /opt/oracle/diag/tnslsnr/mortlach/listener/alert/log.xml
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=LISTENER)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=10.80.180.77)(PORT=1521)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=10.80.180.249)(PORT=1521)))
Services Summary...
Service "hsmtest" has 1 instance(s).
Instance "hsmtest2", status READY, has 1 handler(s) for this service...
Service "hsmtestXDB" has 1 instance(s).
Instance "hsmtest2", status READY, has 1 handler(s) for this service...
The command completed successfully

Sure here is the requested data...Note the scan address has been moved to another node in the cluster so that is the information i am providing now
thanks for any help you can provide... :-)
Yes I can ping the SCAN-IP address from my client
oracle@mortlach srvctl status scan
SCAN VIP scan1 is enabled
SCAN VIP scan1 is running on node mortlach
oracle@mortlach ifconfig -a
lo0: flags=2001000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv4,VIRTUAL> mtu 8232 index 1
inet 127.0.0.1 netmask ff000000
bge0: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 2
inet 10.80.180.77 netmask fffffe00 broadcast 10.80.181.255
bge0:1: flags=1040843<UP,BROADCAST,RUNNING,MULTICAST,DEPRECATED,IPv4> mtu 1500 index 2
inet 10.80.180.249 netmask fffffe00 broadcast 10.80.181.255
bge0:3: flags=1040843<UP,BROADCAST,RUNNING,MULTICAST,DEPRECATED,IPv4> mtu 1500 index 2
inet 10.80.180.253 netmask fffffe00 broadcast 10.80.181.255
nge1: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 3
inet 192.168.180.77 netmask fffffe00 broadcast 192.168.181.255
oracle@mortlach lsnrctl status LISTENER_SCAN1
LSNRCTL for Solaris: Version 11.2.0.1.0 - Production on 28-APR-2011 07:54:47
Copyright (c) 1991, 2009, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=LISTENER_SCAN1)))
STATUS of the LISTENER
Alias LISTENER_SCAN1
Version TNSLSNR for Solaris: Version 11.2.0.1.0 - Production
Start Date 26-APR-2011 17:07:25
Uptime 1 days 14 hr. 47 min. 22 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Parameter File /opt/11.2.0/grid/network/admin/listener.ora
Listener Log File /opt/11.2.0/grid/log/diag/tnslsnr/mortlach/listener_scan1/alert/log.xml
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=LISTENER_SCAN1)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=10.80.180.253)(PORT=1521)))
Services Summary...
Service "hsmtest" has 2 instance(s).
Instance "hsmtest1", status READY, has 1 handler(s) for this service...
Instance "hsmtest2", status READY, has 1 handler(s) for this service...
Service "hsmtestXDB" has 2 instance(s).
Instance "hsmtest1", status READY, has 1 handler(s) for this service...
Instance "hsmtest2", status READY, has 1 handler(s) for this service...
The command completed successfully
oracle@mortlach lsnrctl status LISTENER_SCAN1
LSNRCTL for Solaris: Version 11.2.0.1.0 - Production on 28-APR-2011 07:54:47
Copyright (c) 1991, 2009, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=LISTENER_SCAN1)))
STATUS of the LISTENER
Alias LISTENER_SCAN1
Version TNSLSNR for Solaris: Version 11.2.0.1.0 - Production
Start Date 26-APR-2011 17:07:25
Uptime 1 days 14 hr. 47 min. 22 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Parameter File /opt/11.2.0/grid/network/admin/listener.ora
Listener Log File /opt/11.2.0/grid/log/diag/tnslsnr/mortlach/listener_scan1/alert/log.xml
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=LISTENER_SCAN1)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=10.80.180.253)(PORT=1521)))
Services Summary...
Service "hsmtest" has 2 instance(s).
Instance "hsmtest1", status READY, has 1 handler(s) for this service...
Instance "hsmtest2", status READY, has 1 handler(s) for this service...
Service "hsmtestXDB" has 2 instance(s).
Instance "hsmtest1", status READY, has 1 handler(s) for this service...
Instance "hsmtest2", status READY, has 1 handler(s) for this service...
The command completed successfully
oracle@mortlach grep mortlac-cluster /etc/hosts
10.80.180.253 mortlac-cluster

RAC implementation learning

Hi Gurus,
I would like to upgrade skills to learn RAC as i am eager to do RAC implementation .
I would like to first implement on local PC . Is it possible to implement in local laptop ??????/
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3GB RAM and 250 GB harddisk .
I would like to carry out 11g/10g RAC implementation.
Could you please provide me the link (if any by oracle) which provides detailed RAC implementation along with softwares and all ?
11g database , will it have RAC releated components ? Or any other components need to be downloaded ?
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I would like to upgrade skills to learn RAC as i am eager to do RAC implementation .
I would like to first implement on local PC . Is it possible to implement in local laptop ??????/
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http://www.oracle-base.com/articles/10g/OracleDB10gR2RACInstallationOnCentos4UsingVMware.php
http://www.oracle-base.com/articles/10g/OracleDB10gR2RACInstallationOnWindows2003UsingVMware.php
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http://www.oracle.com/technology/software/products/database/index.html
DOCs
http://tahiti.oracle.com

Oracle 10g RAC implementation running out of space

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Oracel RAC implementation experience

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Hi
Hey are you asking for the Implementation methodology used by SAP-XI.It is known as
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2. Business Blueprint project team gathers requirements and conducts conceptual design of the solution.
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http://media.sdn.sap.com/html/submitted_docs/Implementation_Roadmap_XI/index.htm
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RAC implementation praposal

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Any advices.
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Key factors are high availability and scalability. When application connected to an instance and it crashes, the connection moves transparently to surviving node. DMLs may affect. However, application won't lose connection.
On demand you can add and remove node according load, grid concept.
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Scan IP confusion while implementing ORACLE apps R12 with 11gR2

Hi All,
We are planning to implement a R12 apps with 11.2.0.3.
As i know that when we install oracle 11gR2.scan listener and scan vip got created in GRID_HOME. The scan listener comes with default port.
As R12 by default comes with 11.1.0.7. As per oracle note ID-823587.1
We need to follow the below steps.
srvctl add listener -l listener_ebs -o <11gR2 ORACLE_HOME> -p <EBS Database port>
srvctl setenv listener -l listener_ebs -T TNS_ADMIN= $TNS_ADMIN
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What should be tha value of remote listener and local listener.
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Thanks and Regards

My question is Do i need to configure TNSNAMES.ora? Entry of tnsnames.ora contains scan-vip or virtual vip.See "3.7.1 Steps to Perform On All Oracle RAC Nodes" in the same doc.
What should be tha value of remote listener and local listener.See (Appendix D : Enabling/Disabling SCAN Listener Support in Autoconfig) in the same doc.
Thanks,
Hussein

Oracle RAC implementation scenario

Hello DB Experts,
I have got a very specific business scenario to be implemented.
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Lets assume some better names for this discussion...
RAC Database MYDB (instance on node1 = MYDB1, instance on node2=MYDB2)
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Oracle 9i RAC implementation!!!!!

I am trying to implement oracle 9i RAC on top of Sun cluster 3.1.I have the done following
1)Installed OS- 8 and patches
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According to RAC manual
1)rootdg (disk group) need to be local
2)share another disk group for oracle(where volumes would be created)
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You may find further informations here:
www.oracle-rac.de

RAC Implementation in Oracle 11g

How to implement RAC in oracle 11gR2? is there any documentaion or links to get more info on Oracle RAC

Other than the scant thousands of pages available through http://docs.oracle.com ?
You could also go to http://otn.oracle.com and
1) Docs and white papers:
- click on Database (under Products, left edge) to get to the Database information
- then click on High Availability
- then click on Real Application CLusters and look at the various whote papers and supplement info
2) Example install articles
- click on Articles (top menu)
- search for DBA / RAC articles by people like Jeff Hunter
Alternately, GIYF / LMGTFY

Seeking a solid reccomendation concerning 10g RAC implementation.

I need a solid recommendation regarding what hardware I should use for my planned Oracle 10g RAC environment.
Currently, I am looking for both node and SAN recommendations.
I also created a list of 11 questions that I need to have answered.
Here is how this will be configured:
3 Node Oracle 10g RAC
Each Node will consist of:
32Gb of RAM (minimum)
Windows 2003 64-bit Enterprise (corporate standard, but I can go with Windows 2008 if I have a valid justification)
74Gb RAID 1 (minimum)
Dual 10Gb Ethernet NICs
The SAN will consist of:
750Gb-3Tb dedicated to Oracle
10Gb Ethernet NICs
Here are some of my general questions:
1.) Are there any benchmarks or case studies that you are aware of that might help in the decision process regarding hardware?
2.) Where should my backups reside (SAN or elsewhere)?
3.) What margin should be added for SAN provisioning and waste (even if thin provisioning is implemented)?
4.) My CIO has decided to direct me to go with 10GbE copper instead of fiber channel, what unplanned hiccups can I expect?
5.) What are the caveats of running dual redundant SAN systems?
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7.) How much local storage do I need on each node?
8.) Can I utilize 1 node to run ETL during production hours without drastically affecting database performance?
9.) Regarding the maintenance of this setup, are their any particular classes or training you would recommend? I am a seasoned Oracle DBA, but could use any specific training on the specifics of RAC and/or general performance.
10.) Are there specific advantages in Oracle 11g RAC vs. 10g that would be worth the cost of upgrading our 1000+ 10g user licenses?
11.) Are there any studies on the performance advantages/disadvantages of running Oracle 10g on Windows vs. Solaris (or any Unix)?
I will consider all input of high value, so please let me know what you would recommend.
Thank you for your time.

please find answers that i know for some questions.
1.) Are there any benchmarks or case studies that you are aware of that might help in the decision process regarding hardware?
2.) Where should my backups reside (SAN or elsewhere)?
=> what is the backup method you will be using? certainly recommend RMAN (in addition to OS backups that you are planning to use) for block recovery, should there a block corruption.
i would keep some copies on the SAN local and mirror to DR site too.
3.) What margin should be added for SAN provisioning and waste (even if thin provisioning is implemented)?
=> do not suggest thin provisioning for production.
how big the volumes are going to be? reason for asking the Q is, if the volumes are going to be in TB, percentages can be lower. please plan for 2 years atleast.
4.) My CIO has decided to direct me to go with 10GbE copper instead of fiber channel, what unplanned hiccups can I expect?
5.) What are the caveats of running dual redundant SAN systems?
6.) We are currently using DELL hardware for all other systems, however I do have the freedom to change the vendor for this particular project if I can state a valid business justification. Any other vendors out there that make a better SAN or Node solution than Dell/EMC?
7.) How much local storage do I need on each node?
=> have beetween 75GB to 100GB. hope you are going to have only ORACLE RDBMS and CRS software in here.
please make sure that you rotate your listener logs and alert logs and regular removal of old .trc files older than certain number of days old.
8.) Can I utilize 1 node to run ETL during production hours without drastically affecting database performance?
=> node usage will help from CPU standpoint only. what about the disk writes it is going to perform to the data files?
9.) Regarding the maintenance of this setup, are their any particular classes or training you would recommend? I am a seasoned Oracle DBA, but could use any specific training on the specifics of RAC and/or general performance.
=> attend a 5 day course from Oracle. install RAC on own and play with it.
10.) Are there specific advantages in Oracle 11g RAC vs. 10g that would be worth the cost of upgrading our 1000+ 10g user licenses?
=> did not compare, though installed 11g.
11.) Are there any studies on the performance advantages/disadvantages of running Oracle 10g on Windows vs. Solaris (or any Unix)?
=> running on windows? please do not. used on linux a lot. pretty stable and solid. recommend to go with 10.2.0.4 or higher.
hope the above will help.

OVM disks for RAC implementation

Dear All
is there any guide available on how can you create the disks for RAC ASM in OVM 3.3.1 using a fiber channel block level storage?
Thanks
George

You are right, you can't use virtual disks for RAC configuration. Have a look here (especially page 18):
http://www.oracle.com/technetwork/products/clustering/oracle-rac-in-oracle-vm-environment-131948.pdf
Using physical disks means that you create LUNs on your storage array connected to Oracle VM Servers by fabric channel. You map these LUNs to all servers in the pool or all standalone servers where you are going to install your virtual machines being Clusterware nodes. Then you rediscover storage in Oracle VM Manager, mark these LUNs as "shared" in OVMM and add them to your virtual machines as "Physical disks" (by editing guest properties in OVMM).
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Configuring DNS for SCAN to Oracle RAC 11gR2

Hello Oracle Linux experts
I'm trying to install the DNS server on both nodes to RAC on my laboratory
I'm following http://prutser.wordpress.com/2010/01/26/how-to-setup-a-private-dns-for-your-virtual-cluster/
My named.conf file.
-H hosts.dns
-d spaulonci.com.br
-n 192.168.50
-n 192.168.25
-u [email protected]
-W /var/named
-M
-y
+O forwarders { 192.168.50.2; };
+O forward only;
-s racnode1
-s racnode2
-z 192.168.50.10
My hosts.dns
192.168.25.10 racnode1-priv.spaulonci.com.br
192.168.25.11 racnode2-priv.spaulonci.com.br
192.168.50.10 racnode1.spaulonci.com.br
192.168.50.12 racnode2.spaulonci.com.br
192.168.50.11 racnode1-vip.spaulonci.com.br
192.168.50.13 racnode2-vip.spaulonci.com.br
192.168.50.20 openfiler1.spaulonci.com.br
192.168.25.20 openfiler1-priv.spaulonci.com.br
192.168.50.30 cluster-scan.spaulonci.com.br
192.168.50.31 cluster-scan.spaulonci.com.br
192.168.50.32 cluster-scan.spaulonci.com.br
When a try start the service, I'm getting a erros.
[root@racnode1 ~]# service named start
Locating /var/named/chroot//etc/named.conf failed:
[FAILED]
My Linux é Red Hat 5.4 64bits
Anyone have any idea ?
Thanks very much
Edited by: 816345 on 06/12/2010 15:34

The author of the page uses the h2n tool to generate the DNS configuration files. The examples listed are not examples of the actual DNS configuration files like named.conf, etc., but samples of the configuration files to use with the h2n tool. Perhaps the instructions will work if followed more precisely.

SCAN Ip addresses

Hi,
doest the scan DNS entry needs to point to the node's public ip address? or that i need to allocate 3 new ip address from the same subnet as my cluster's public ip?
http://www.oracle.com/technology/products/database/clustering/pdf/scan.pdf
1. Define the SCAN in your corporate DNS (Domain Name Service)
2. Use the Grid Naming Service (GNS).
"If you choose Option 1, you must ask your network administrator to create a single name that resolves to 3 IP
addresses using a round robin algorithm. The IP addresses must be on the same subnet as your public network in the
cluster."

you need to allocate 3 new ip addresses for scan from the same subnet the public ip is from.
for e.g.
two node cluster the dns entries can be like this
================
node1 and node2
===============
node1-vip.domainname 192.168.1.10
node2-vip.domainname 192.168.1.20
scan.domainname 192.168.1.11
scan.domainname 192.168.1.12
scan.domainname 192.168.1.13

Scan Email Address Book Group

The scanning and senting to the groups works fine with one exception:
Let's add a group of users:
[email protected]
[email protected]
[email protected]
[email protected]
When these are added into a group evertone will receive the emails but the email received to the recipient will list every name and email address on the "To:" line in the received email. This allows all recipients to see and access everyone elses email address. That is a real problem.
Example (of an email send by [email protected] to the above group):
From: [email protected]
To: [email protected]; [email protected]; [email protected]; [email protected]
Please explain how to modify the email groups so the entire group is not visible to the recipients
Thanks!
Drew

Hello BayPally,
Welcome to the HP Forums.
I see that you are having an issue with the multiple email addresses being visible when scanning and sending a group email.
This is one of those things that can not be changed.
I do realize it is frustrating for you however this is just one of those things.
Thanks for your time.
Click the “Kudos Thumbs Up" at the bottom of this post to say “Thanks” for helping!
Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
W a t e r b o y 71
I work on behalf of HP

Oracle11gR2 SCAN IP address (RAC implementation)

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