Active/Passive RAC setup in 11.2 Standard Edition?

For the ACTIVE/PASSIVE setup in 10g RAC, the ACTIVE_INSTANCE_COUNT parameter works very well. However, in 11.2 version this parameter is obsolete. I'm testing this on our Test RAC server with Oracle Standard Edition 11.2.0.1. What are the other ways possible for an ACTIVE/PASSIVE cluster in Oracle 11.2? Has anybody gone through this before? I know that Oracle Enterprise Edition supports RAC One Node, but I've Standard Edition & moreover, I'm planning to have 2 databases on this cluster with 1 database being Active/Passive & the other being Passive/Active on the 2 nodes.
Appreciate any quick help!! Thanks.
Satish...

Hi user1701261,
One option to divert traffic to specific node could be setting 11g Services in active , passive mode.
srvctl add service -d DB01 -s DB01_SRV -r "db011" -a "db012, db013"
Where
-d <db_unique_name> Unique name for the database
-s <service> Service name
-r "<preferred_list>" Comma separated list of preferred instances
-a "<available_list>" Comma separated list of available instances
Session will switch to incase db011 instance goes down.
active_instance_count parameter is effective only for Two node cluster, whereas using this method you could get more flexibility.
Regards
Krishan Jaglan

Similar Messages

Active passive RAC configuration

hi,
how can I change the active-active RAC database to active-passive RAC database?
1) Is it enough to change active_instance_count=1?
2) Is there any change required in client side tnsnames.ora file?
I want to install two databases, db1 is active in node1 and passive in node2.
And db2 is active in node2 and passive in node1.
3) For configuration of this, which method is best?
current client side tnsnames.ora file as follows:
DBRAC =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = gcappdev-vip)(PORT = 1523))
(ADDRESS = (PROTOCOL = TCP)(HOST = gcwebdev-vip)(PORT = 1523))
(LOAD_BALANCE = yes)
(FAILOVER=ON)
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = DBRAC)
(FAILOVER_MODE = (TYPE=SELECT)(METHOD=BASIC))
)

When you mean passive.. do you want the database to be down or not usable?
If you are on 10g.. then the best method to do this is to use Services. Have services enabled on both instances. however it will be preferred on one instance /node and available on the other.
With this, when instance one where to crash, the service will failover to instance 2 and will be immediately available.

Is "RAC" Free if you use "Standard Edition" and not the "Enterprise Edition" Databases?

Hello to All you wonderful Oracle Guru's....Greetings...
I was told to do some research on this, it's quite simple, but it's a question of getting management to buy in the idea of going with Clusters and moving off the nice and secure single instances..
Is RAC FREE if you use "Standard Edition" instead of "Enterprise Edition"...
Does anyone know?
I am going to do a Proof of Concept RAC install for management\devs\ect and others to review....
Any Clues???
Thanks,
Xevv...

Have a check of this: http://www.oracle.com/us/corporate/pricing/price-lists/index.html
Oracles licensing is predominantly per seat (user) or per CPU. So taking per CPU, you would need to figure out what you need - say you want to license the DB on RAC, you will need a license for Oracle Database Standard Edition (either per user or per CPU) - so only bound per user or per CPU on which the database(s) are running. If you have 2 x servers in a cluster, you will have 2 x installations of Oracle DB, each running on n processor(s)
If you can quantify the number of users (if say an internal application) you can go per seat (say 50 users) but there will always be a minimal user license.
Alternatively you're looking at per CPU. Generally you're speaking of the backend to a system that serves a large volume of users, so rather than license 1000 users, you'll just license the core.
If you take a look at the above, you'll see that Oracle determines processor charges around the number of processors and cores (so some cores might be charged at 0.25 of a processor price). Here's a link to how you can cost processors (some processors with 4 cores will still only be charged as 1 x processor, as Oracle will rate each core at 0.25 of a processor) when calculating price.
http://www.oracle.com/us/corporate/contracts/processor-core-factor-table-070634.pdf

Sequence Co-ordination in Active/Passive RAC

Hello folks,
if we are creating 2 node RAC in Oracle 11g... Sequence coordination will happen between the nodes when the next sequence number is requested; The question is if I create the 2 node RAC in Active/Passive mode(I m thinking to do this either using ACTIVE_INSTANCE_COUNT parameter as I have only 2 nodes or to use srvctl to set preferred and available instances), will the sequence co-ordination will still happen if I request a sequence number?
Can you also please point me to the details on what all co-ordination happens between the nodes (2-active) at run-time?
I'm talking about Sequence coordination as the upstream app is dependent on Ordering of the Sequence.
Thanks in advance.
Edited by: ~RK on Mar 12, 2012 11:39 PM

Hi user1701261,
One option to divert traffic to specific node could be setting 11g Services in active , passive mode.
srvctl add service -d DB01 -s DB01_SRV -r "db011" -a "db012, db013"
Where
-d <db_unique_name> Unique name for the database
-s <service> Service name
-r "<preferred_list>" Comma separated list of preferred instances
-a "<available_list>" Comma separated list of available instances
Session will switch to incase db011 instance goes down.
active_instance_count parameter is effective only for Two node cluster, whereas using this method you could get more flexibility.
Regards
Krishan Jaglan

Step for Active/Passive RAC Patching (CPU Patch )

Hi
I know how to patch active /active configuration patching done in RAC.
I need to patch (CPU) for acitve/passive , how to i proceed ,is it the same ? i.e i can open passive node any how and the patch one by one .
Please suggest the step

Hi,
1) Will the 9.2.0.8 upgrade patching modified the SYSTEM tablespace and corresponding SYSTEM datafilesYes it will modify the SYSTEM tablespace and corresponding datafiles.
If I upgrade my active primary database first, will I be still able to upgrade the passive primary database without error laterYes u can upgrade passive primary database without error later
I shall be patching the database after failover the passive DB to become activecan u elaborate this further.
I suggest u to create a formal service request at MyoracoleSupport
Regards,
X A H E E R

RMAN for active passive 10g R2 RAC

Hi,
I am having 10g R2 Active-Passive RAC setup.
in this environment,If I am taking the backup using RMAN,
how can I handle the failover?
In active-active instance, if channel allocated to one node is failed, backup will be completed from channel allocated to other node.
how can i handle the failover in active-passive RMAN backup??/

What was the reason you went for active/passive RAC setup ?
--> this is requirement.
I thought cluster could achieve the same thing.
1) How can we achive active/passive setup by using cluster?
2) In RAC active/passive configuration and Cluster setup, which one is good option?
3) Any URLs on this topic
Thanks in Advance....
Regards:
Abdul Rajak

RAC Active/Active VS Active/Passive 11g Configuration

Thanks in advance.
I appreciate your experience with implementing RAC in an Active/Active VS Active/Passive Configuration of 11g RAC.
Much of my experience has been with Active/Active to take full advantage of performance capability of both nodes (2 node cluster). As such, I don't see the advantages of Active/Passive RAC configuration.

The benefit is that you can save on licensing costs while gaining availability
Bjoern

Active Passive Vs Active Active

Hi All,
How much more effort it requires to failover or get up and ready with passive node, if Active Passive strategy is followed rather than Active Active just for saving on licenses.
Note : High availability is not a concern.
thanks,

Be clear what the policy means. RAC is normally considered an ACTIVE/ACTIVE solution since all nodes in RAC are actively processing. In an ACTIVE/PASSIVE setup by contrast one or more nodes are actively processing whilst others are standing by ready to take over the workload in the event of failure of the primary. Physical Standby, Failsafe and non-oracle clusters are often Active/Passive. You may also check if the policy comes from a sqlserver centric view of the world where you split the sqlserver databases between different nodes, so that although for any given sql database the solution is active passive, you don't 'waste' the resources of some nodes just waiting to take over, but rather run other databases on them.
Your description of ACTIVE/ACTIVE seems to rather correspond to a Stretch Cluster http://www.oracle.com/technology/deploy/availability/pdf/1126_Ray_WP.pdf has a good overview of what this means. I'd be surprised if the policy was really to put all databases on just about the most expensive hardware and software solution available, but I'm used to surprises in the world of corporate policies.
Niall
user526463 wrote:
My company was recently purchased. The new company has a "policy" about any High Availability database be an Active\Active configuration. We have in the past used active\passive RAC installs with each site have multiple active RAC nodes. I am interested in see what the cases are for a true Active\Active environment where there will be multiple RAC nodes in each "cluster" and multiple databases (disk) which are actively written to, then synchronized. (As apposed to a couple mutinode RAC setups with a primary\standby database)
Any white papers or best practice document references would be great. I'd hate to do this just case of some policy.
Thanks

Active\Active vs Active\Passive

My company was recently purchased. The new company has a "policy" about any High Availability database be an Active\Active configuration. We have in the past used active\passive RAC installs with each site have multiple active RAC nodes. I am interested in see what the cases are for a true Active\Active environment where there will be multiple RAC nodes in each "cluster" and multiple databases (disk) which are actively written to, then synchronized. (As apposed to a couple mutinode RAC setups with a primary\standby database)
Any white papers or best practice document references would be great. I'd hate to do this just case of some policy.
Thanks

Be clear what the policy means. RAC is normally considered an ACTIVE/ACTIVE solution since all nodes in RAC are actively processing. In an ACTIVE/PASSIVE setup by contrast one or more nodes are actively processing whilst others are standing by ready to take over the workload in the event of failure of the primary. Physical Standby, Failsafe and non-oracle clusters are often Active/Passive. You may also check if the policy comes from a sqlserver centric view of the world where you split the sqlserver databases between different nodes, so that although for any given sql database the solution is active passive, you don't 'waste' the resources of some nodes just waiting to take over, but rather run other databases on them.
Your description of ACTIVE/ACTIVE seems to rather correspond to a Stretch Cluster http://www.oracle.com/technology/deploy/availability/pdf/1126_Ray_WP.pdf has a good overview of what this means. I'd be surprised if the policy was really to put all databases on just about the most expensive hardware and software solution available, but I'm used to surprises in the world of corporate policies.
Niall
user526463 wrote:
My company was recently purchased. The new company has a "policy" about any High Availability database be an Active\Active configuration. We have in the past used active\passive RAC installs with each site have multiple active RAC nodes. I am interested in see what the cases are for a true Active\Active environment where there will be multiple RAC nodes in each "cluster" and multiple databases (disk) which are actively written to, then synchronized. (As apposed to a couple mutinode RAC setups with a primary\standby database)
Any white papers or best practice document references would be great. I'd hate to do this just case of some policy.
Thanks

Oracle Grid Infrastructure: Active/passive Clusters

Full blown RAC instances are still relatively rare. Maybe the high costs are one of the main reasons for this. Anyway, many SAP/Oracle installations don't really require a fault tolerant database. A simple automatic failover in an active/passive cluster would be sufficient.
In the book "Oracle Database 11g RAC on Linux" I found a very interessting comment on page 28:
A little known fact is that using Oracle Grid Infrastructure makes it very simple to set up a cost effective active/passive cluster. Leveraging the Grid Infrastructure API and Oracleu2019s Automatic Storage Management as a cluster logical volume manager makes it easy to constantly monitor a single instance Oracle database. In case of a node failure, the database will automatically be relocated to the standby node. Depending on the fast_start_mttr_target initialization parameter and the size of the recovery set, the failover to the standby node can be very quick; however, users will be disconnected from the database as part of the failover process.
Now I have two questions:
1. If I want to create a proof of concept, where do I start? I already had a look at the Oracle 11g documentation, but in the documentation "cluster" equals "RAC".
2. It is not sufficient to perform only a database failover. We need to handle the SAP system as well. Is it supported by SAP to put /usr/sap/SID and /sapmnt/SID into ASM 11.2 and present them e.g. as ASM cluster file systems?
Regards,
Mark

Hello Stefan,
we are both on one line. I would also prefer a simple active-passive cluster setup to a full blown RAC or even a RAC One Node. especially if the license fee for Clusterware is significantly lower than for RAC. However, Oracle staff makes it really clear that Oracle does not want customers to implement active-passive clusters based on Clusterware without RAC. They even say this active-passive cluster is no longer supported on 11.2. by Oracle! Of course it worked fine with 11.1 and there is no reason why it should be technically no longer possible with 11.2. WIth this adverse winds from Oracle blowing in our face, it doesn't make sense to implement such a active-passive cluster any more, however elegent it might have been technically.
So let's see what the alternatives are and when RAC One Node will be available (and at what price!).
Regards,
Mark

Problem to create database with RAC 10g with Oracle Standard Edition

I install CRS (Cluster Ready Services), and then install Oracle 10g database. Also, I install patches 10.1.0.4. When I create database with ASM storage give me a error to create files database.
Any idea?
Thanks
Edu AlcaÃ±iz

You were right.
http://download-uk.oracle.com/docs/html/B14203_05/intro.htm#sthref44
under the section
"1.3 Configuration Tasks for Oracle Clusterware and Oracle Real Application Clusters"
"... If you use RAC on Oracle Database 10g Standard Edition, then you must use ASM."
Thanks, problem solved.
- Vegard

What is the difference with 1 Lync Standard Edition using VMware Fault Tolerant and 2 Lync Enterprise Edition in a cluster

Hi
As I will be planning to setup Lync on a virtual environment regardless if it is going to be the Standard or Enterprise edition.
I am thinking if we use 1 Lync Standard Edition for the FE Server with Fault Tolerance enabled, would it be as good as having 2 Lync Enterprise Edition in a cluster?
Thanks

Hi there,
the main difference between using Lync enterprise and lync standard is the High availability and scalability feature,
you will get fault tolrance setup with one lync standard edition running on whatever hyper-v and vmware platform, however this will not be an optimum highly available solution for the simple reason that upon a host server failure the image will move
to another available host server and users will lose their active session durin the move process.
on the other hand what you will gain if you the Enterprise edition is that you will have a unique identity to which all lync clients will be connecting and this identity is the lync pool identity which is in the background handled with multiple Front-End
servers and AV conferencing pools, mediation pools and so on.
In additioin when you have multiple front-ends in place, those front-ends will not work in active/passive mode as in a regular cluster, in contrairy all the servers will be active and handeling the work load.
hope i make it a bit clear, if yiu need more info i am ready
Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread
Thanks for the response, being a small environment of 300 users, standard edition would be more than enough for me but the fact for HA is very critical for me at this stage. That is why I am exploring the option of using VMware FT.
I don't quick get what you mean on the users having to move to another image as my understanding of FT is in the event of a host failure (not VM failure like bluescreen etc), the VM will fail over to another host with no lost in any ping etc.
So, in theory, the Lync Server VM would never know that the parent ESX host had failed and it needed to failover to another host. Hope my understanding is correct.
Thanks

Certificate Requirement for Lync 2013 Standard Edition

I have successfully run the setup of lync 2013 standard edition now I am stuck due to certificates required for lync 2013. when I generate a csr. it show the subjected urls for that.
hostname.domain.com
sip.domain.com
diali.domain.com
meet.domain.com
admin.domain.com
lyncdiscover.domain.com
lyncdiscoverinternal.domain.com
im.domain.com (External URL)
so if I go for 3 party CA then I need 8 certicate only for internal lync. As I also need to connected federated partner and external user so I need Edge for again I need 3 more certificates
web.domain.com
a/v.domain.com
sip.domain.com
now when I go for these certificate it quit costly and I didn't understand why such certifcates required. can anyone help me to fix such requirement.
Or, what are the necessary url to which I buy 3 party CA rest leave as it is.
I also want to deploy Edge with single adopter as we have only one network so can anyone assist me to proceed it further.
Talha Faraz Malik

To save on the cost of your third party certificates, I would deploy an internal certificate authority to sign certificates for your internal front end. For your third party certificate, you would only need the SANs for the edge and for your
reverse proxy and as Edwin said, this can be a single cert with multiple SANs.
For example, for your edge you would need:
sip.domain.com
web.domain.com
You would not need A/V as this role does not require a SAN on your certificate. On the same certificate, which you could also use on your reverse proxy, you'd likely want the following FQDNs.
lyncdiscover.domain.com
im.domain.com (your external web services FQDN)
meet.domain.com
dialin.domain.com
You may also want to consider your internal web services FQDN and include the following so third party mobile devices can connect without needing a certificate installed:
im_internal.domain.com (your internal web services FQDN)
lyncdiscoverinternal.domain.com
I'm sure that's not entirely clear yet, so feel free to ask more questions or what the purpose of each is.
When you say Edge with a single adapter, you mean a single adapter in a DMZ or internal? You definably want two NICS, both in separate DMZs, but I've managed to get the edge working with a single adapter in a DMZ before. What you don't want is
the edge in your internal network.
Please remember, if you see a post that helped you please click "Vote As Helpful" and if it answered your question please click "Mark As Answer".
SWC Unified Communications
This forum post is based upon my personal experience and does not necessarily reflect the opinion or view of Microsoft, its employees, or other MVPs.

High Availability - Active Passive setup for EBS Database

Hello Gurus,
We have the below environment:
Oracle Applications - 12.1.3
Oracle Database - 11.2.0.3
OS - Oracle Enterprise Linux 5.7
I would like to know how to achieve high availability (*Active/Passive*) for the database. We don't want to go with RAC at this stage. Can you please guide on a specific note id which explains how to setup an active passive database environment for HA.
Thanks.

Hi;
We have the below environment:
Oracle Applications - 12.1.3
Oracle Database - 11.2.0.3
OS - Oracle Enterprise Linux 5.7
I would like to know how to achieve high availability (*Active/Passive*) for the database. We don't want to go with RAC at this stage. Can you please guide on a specific note id which explains how to setup an active passive database environment for HA.You can go with Dataguard. Please review:
Business Continuity for Oracle E-Business Release 12 Using Oracle 11g Physical Standby Database [ID 1070033.1]
Also see:
MAA Roadmap for the E-Business Suite [ID 403347.1]
Regard
Helios

Can you Setup a Active Passive DFS namespace in the same site

Hi,
I would like to use DFS for profile replication. I know MS doesn't recommend it, but was wondering if you could setup DFS namespace in an Active/ passive contests in the same AD site. I think or what I can understand of DFS is that if the Fileserver is in
the same site it would select it randomly and you cant specify which server is the primary.
Basically what I want is to have users only access File server 1, but if this file server 1 goes down to be redirected to file server 2.
Thanks,
Shaun

You could have a read-only Replica but that really doesn't help you in terms of the automatic redirection thing. You could also set up a 2-node replication group and disable the referral for the folder(s) on one node like below:
However the "failover" would be manually Enabling, which I doubt fits the bill.
Otherwise, I'm not aware of any configuration of DFSR that allows you to do what you're talking about (maybe someone else will correct me.) HOWEVER, I suspect a design that fits your use case may be to create a DFS namespace that runs
on a file server cluster. That way if Node1 goes down, the cluster fails over, and the data continues to be available on Node2 when accessed via DFS.
If interested, there are a couple ways to approach DFS in combination with a cluster.
Configuration1: The cluster is configured to host the namespace as well as the folder targets (where the actual data is). CAVEAT - The cluster can only be configured as a standalone cluster.
Configuration2: Create a domain DFS namespace that resides on other servers.
\\domain\DFSRoot for example. Then point each of the leaves/folder targets to clustered shares. So you'd create a subfolder called "Profiles" that points to the clustered share that houses the profiles.
Just an idea. Hope this helps.

Active/Passive RAC setup in 11.2 Standard Edition?

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