Oracle Active / Passive Cluster Installation

Hi everybody,
I have searched a lot about installation of Active / Passive Cluster installation in Oracle on Linux, neverthless nowehere I found it.
Can anyone help me to install it or send me any documentation about it from start to end.

Hi,
if you are talking to a High Availability feature in OAS 11g then check the following document.
Reference
http://www.oracle.com/technetwork/database/features/availability/maa-edg-frd-129690.pdf
Regards Roberto

Similar Messages

Active - Passive Cluster

Hey, I have to manage an active passive cluster on SLES10 SP4. Oracle 10.2.0.4
All oracle binaries are on a DRBD Device on mountpoint /oradata.
This mountpoint includes the binaries and all datafiles.
I havent installed these systems. At one stage on node died and got reinstalled by a systemadministrator.
After a switch from the running node to the standby node, the cluster is not starting.
Jan 3 14:36:01 a logger: Cluster Ready Services waiting on dependencies. Diagnostics in /tmp/crsctl.6114.
Jan 3 14:36:14 a logger: Waiting for Oracle CSS service to be available before starting
Jan 3 14:36:14 a logger: ASM instance +ASM. Wait 2.
After issung $ORACLE_HOME/bin/localconfig add the cluster is starting, the asm instance is coming up, and also the database instance is starting.
Shortly after that the db instance dies. Alertlog is showing something like recursive sql error.
Looks like writing to the datafiles is not working.
In asmcmd the diskgroups are showing DISMOUNTED (show MOUNTED before)
so what to do ?
a) Why is it necessary to issue "localconfig add" to make the cluster starting ?
b) What could be a reason for not being able to write to the database ?
c) How would you guys install an active/passive cluster ?
c1) Install OS on both nodes
c2) Install oracle binaries
c2.1) on both nodes in the local files system and do the mapping to the drbd afterwards?
c2.2) only on one node and just switch the mountpoint ?
Chris

Hi,
first of all please clarify, if you have Oracle clusterware installed, or just the local configuration for local ASM.
There is a big difference between the 2, and also using DRBD has nothing to do with Oracle clusterware (and is not supported by Oracle).
a.) Localconfig may be necessary for a local ASM installation in 10.2. Main reason is, that the CSS service configuraton includes the hostname (which changed if you switched nodes). Hence may not be able to start ASM. With localconfig you are fixing this issue.
Very important: It is not a good idea to run this is a cluster configuration, since it will break things (a lot of things).
b.) If the ASM diskgroup got dismouned, then the database cannot write. Hence your problem. Why the diskgroup dismounted, you should find in the ASM alert.log
c.) I would go for RAC One Node. Which has this all preconfigured. So it makes life easier. Search for "RAC One Node" on OTN for more information. At least I would take a manual cluster, and do mirroring by ASM, and not DRBD....
c1.) Yes install Oracle cluster (or Grid infrastucture in 11.2) on both nodes. Like a RAC.
c2) Install database software on both nodes locally.
c2.1) No. No DRDB.
c2.2) Both nodes. Same installation.
Regards
Sebastian

Installing Remote Blob Storage (RBS) Provider on Active/Passive cluster

We are implementing RBS for our SharePoint farm and have successfully got it installed and working for all Content Databases.
I've read a dozen or so guides but none of them cover installing on a clustered SQL environment and I need to install the RBS provider on the passive node but cant see any guides that mention it although its stated Clustering is supported.
Can anyone tell the correct way to install it on the passive node?

Hi Dr_Sanchez,
According to
this blog, it is supported to install remote blob storage provider on SQL Server active passive cluster. You could follow the installation steps in that blog. If you get an error like this:
Cannot use file 'c:\Blobstore' for clustered server. Only formatted files on which the cluster resource of the server has a dependency can be used. Either the disk resource containing the file is not present in the cluster group or the cluster resource of
the Sql Server does not have a dependency on it.
Then please replace 'c:\Blobstore' with the volume\directory which resides in the same group in the Cluster Administrator as the SQL Server resources.
Regards,
Michelle Li
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Planning System Center Operation Manager 2012 R2 on SQL 2012 Active/Passive Cluster

Dears,
I'm planning to deploy System Center Operation Manager 2012 R2 on SQL 2012 Active/Passive Cluster which have other sql instances running for other applications. And i'm planning to create a new instance for SCOM, kindly provide me recommendation
whether i can install all sql databases for SCOM on same sql instance or does it require separate instances for opsmanger database , dw database and ACS database?
Thanks in advance..

Hi,
Yes, all SCOM SQL databases can run on the same instance of SQL server.
As well, look at some helpful posts for the topic:
http://technet.microsoft.com/library/dn281933.aspx
http://blogs.technet.com/b/kevinholman/archive/2013/10/18/opsmgr-2012-r2-quickstart-deployment-guide.aspx
Natalya
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Drop Database in Active/Passive Cluster

Hi,
database is 10.2.0.4 on RHEL AS 4. Database is using ASM for the storage of physical files. This database is part of Active Passive cluster.
Can you please guide me as how can I drop this database and also remove the entry from cluster.
Thanks

Panicked DBA wrote:
Hi,
database is 10.2.0.4 on RHEL AS 4. Database is using ASM for the storage of physical files. This database is part of Active Passive cluster.
Can you please guide me as how can I drop this database and also remove the entry from cluster.
For dropping the database, using the DBCA is the best approach. After the removal, use the command srvctl to remove the entries from the OCR.
HTH
Aman....

[b]Managing Active/Passive Cluster.[/b]

Hi,
We are having active passive cluster
environment and we are running webMethods on
it.
The problem we are having is whenever we do
any changes we need to do a failover and then
do the same task on the passive one as well.
Can anybody help how to make this thing
automatic so that we deploy any package/fixes
on webmethods and should get replicated on
the passive one.
Thanks,
Amit.

If you are manipulating data-files, that do not affect the Application (in this case webmethods) then simply use the cluster console, which allows you to perform updates on multiple hosts at the same time.
Alternatively if you are making changes to the application itself then, does the application management software ( I am not that familier with webmethods) not allow you to distribute changes across an application domain, ie. using the application tools and not the underlying cluster framework.

Veritas Active/Passive cluster knowledge

Hi All,
Does anyone have any experience of Veritas Active/Passive cluster skills that they could share with me.
rgds
alan
Message was edited by:
alanm

Veritas active/passive cluster is very easy to use. I am not sure about linux but I guess even for linux there are having gui interface which is very user friendly. Its like cluster will use common storage and one node will be configured as active other as passive in case any failure occurs at node1 automaticly node2 will become active.

3 Node ASA active/passive Cluster possible ?

Hi,
we operate an active/passive cluster with 2 ASA5510 in Routed Mode.
Is it possible to add another node, so that we have one active and two standby nodes in the cluster?
Unfortunately, I have found no documentation on this .... The data sheet say only up to 10 nodes can be mentioned as a VPN load balancing cluster.
best regards
Andreas

For failover you cannot implement more than two ASAs as a cluster. Either for Active/Standby or Active/Active solutions
Tariq Bader
Sent from Cisco Technical Support Android App

Configuring Active-Passive cluster for Oracle Database on Red hat

Can I configure the red hat cluster suite to implement an Active-Passive Oracle Service without configuring GFS Volume manager?
In other words, I want to install Oracle Standard Edition for Red hat on 2 node separately. Subsequently I am creating an Oracle Instance on the firsth node whith Oracle datafile, redologfile, controlfile,initfile on a SAN Storage. Subsequently I want to configure red hat cluster suite to start the Oracle Instance on the second node when the the firsth node fail. Only one node at time have the Oracle Instance up. Does this configuration works correctly or I have to install and configure any software to manage shared storage file system(like GFS Volume Manager or OCFS, ASM ecc.)?
Thanks

This scenario is usually done through custom scripts.
To get an idea of what is required, I recommend you look through Oracle's DataGuard documentation, as Data Guard is a free utility included in the Enterprise Edition to do exactly what you want.
(Having spent a lot less money to buy the less expensive product, you now have the opportunity to spend more in programmer and maintenance costs to create your own solution.)

Non-domain user authentication against SSAS on Active/Passive Cluster

Hello,
We have an Active/Passive SQL Server setup (DB1 & DB2 Servers) connected to a cluster for SQL & SSAS. I have a web server not on the same domain that I am trying to authenticate with SSAS. This works OK if I set the website to impersonate
myUser and I add local account myUser as an Admin on SSAS for the active server (DB1). But when this fails over to DB2 then it fails to authenticate. SSAS won't allow us to add myUser as an admin for local accounts on both DB1 & DB2 as it errors
adding the second one. Could anyone advise how such a scenario should be approached?
We have tried creating a domain user too which DB1 & DB2 can of course both share but I don't think the web server can impersonate this with being not part of the domain.
Thanks.

Hi Jcorker,
According to your description, you need to access the SQL Serve Analysis Services database which is configured as cluster for SQL & SSAS from another domain, right?
In SSAS we can use the solution below achieve the requirement.
1.Create new domain account and impersonate the web site with that.
2.Create local user account on the analysis service with same exact username/password as like domain account created in the previous step.
However, you cannot create a local account with the same name on both servers. I have tested it on my local environemnt, we can create the same local account with the same name on both servers. In your scenario, if DB1 and DB2 on different server, you can
create a local account with the same name on both servers. Please post the detail errors, so that we can make further analysis.
Besides, SSAS only allows users of the same domain or trusted domains and it does not allow users from any domain except from these two. You can configure the trust relationship between the domains.
http://technet.microsoft.com/en-us/library/cc961481.aspx
Regards,
Charlie Liao
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Charlie Liao
TechNet Community Support

MSSQL2012 active/passive cluster convert to active/active cluster

Good day.
We have 2-node active/passive MSSQL2012 cluster (on Win 2008 R2). One "default" instance.
We want convert to active-active, (multi-instance).
As I understand, one SQL instance (existing) will run on 1 cluster node and the second (new) instance on the 2 cluster node.
I have some questions:
- we have cluster virtual name and ip address for existing MSSQL instance, for the second MSSQL instance we need to create another name and ip ?
- for second MSSQL instance we can create 2 separate cluster disks (for DB and LOGS) ?
- for second MSSQL instance we can create another DTC instance and bind it to the second MSSQL instance ?
- we can use existing physical LAN connectors on our servers (data and heartbeat) or we need to add new LAN adaptors ?
- quorum disk is the same for all instances ?
Sorry for my bad English.

I have some questions:
- we have cluster virtual name and ip address for existing MSSQL instance, for the second MSSQL instance we need to create another name and ip ?
Yes that would be required.
- for second MSSQL instance we can create 2 separate cluster disks (for DB and LOGS) ?
Yes it will be in different resource group and you can have different disk for them.
- for second MSSQL instance we can create another DTC instance and bind it to the second MSSQL instance ?
Same MSDTC can be used for multiple instance.
http://blogs.technet.com/b/askcore/archive/2009/02/18/how-to-configure-multiple-instances-of-distributed-transaction-coordinator-dtc-on-a-windows-server-failover-cluster-2008.aspx
- we can use existing physical LAN connectors on our servers (data and heartbeat) or we need to add new LAN adaptors ?
Best to ask network team
- quorum disk is the same for all instances ?
Quorum is for windows cluster not for SQL server so Yes its same for all instances
Sorry for my bad English.
Please mark this reply as the answer or vote as helpful, as appropriate, to make it useful for other readers

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

How to know the Cluster is active active or Active Passive

Friends
A quick and easy Question. I am pretty new to Clustering. How do I know the cluster is whether active active or active passive?

Hi Prasant,
Simple two-node, for Active-Passive cluster, only a single SQL Server instance is running. For Active-Active cluster, both SQL Server instances are running on each physical node of the cluster.
Generally, we can use one of the following options to identify the active node in a SQL Active-Passive Failover Cluster. For more details, please review this
blog.
1. In “Failover Cluster Management” console, you can see the current active node under the label “Current Owner” from summary screen.
2. Run the following T-SQL in SQL Server Management studio.
SELECT SERVERPROPERTY('ComputerNamePhysicalNetBIOS')
There is also a similar thread for your reference.
https://social.technet.microsoft.com/Forums/en-US/be030e90-f41e-4d42-89e0-ae2a740fbb54/how-to-determine-a-node-is-active-or-passive?forum=sqldisasterrecovery
Thanks,
Lydia Zhang

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 Active / Passive Cluster Installation

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