OAS Active-Active Topology
I want to install Infrastructure and Middle-Tier on a Active-Active Topology. I don't have a load balancer right now. Can I install the infrastructure and middle tier without the load balancer and then configure the middle-tier to connect to the load balancer?
Yes, for load balancing the mid-tier either:
- create the VIP now and hard-code it in DNS to one of the mid tiers (obviously only that one will get the load)
or
- use the host names now (e.g. mid1 and mid2) and configure the VIP later.
The advantage of the first approach is that the clients won't need to change their URL later, whereas the second approach is simpler to start with.
Similar Messages
-
Configure 10g OAS Active Active Topology
Hi,
Our requirement is to deploy 10g OAS (Forms & Reports) on two servers for load balancing, below are my questions,
1. Is it mandatory to configure cluster if I have two applications servers on two different servers.
2. Can we use one URL address for both servers if so how ? (without big IP concept)
3. Please provide some links to configuring active-active 10g-OAS1. Is it mandatory to configure cluster if I have two applications servers on two different servers.
No.
2. Can we use one URL address for both servers if so how ? (without big IP concept)
Yes. See below.
3. Please provide some links to configuring active-active 10g-OAS
Have a look at this thread -
Clustering of Oracle AS 10.1.3.0 nodes in active-active topology
Hi,
The following requirements for clustering in our environment exist:
* Active-active topology
* External hardware load-balancer
* Fail-over
* Application session-state replication
We use multiple Oracle AS 10.1.3.0 nodes. Applications are deployed on 2 or more OC4J instances on those nodes.
I've read the Oracle docs on clustering and I have some questions regarding the clustering configuration to use:
1. When an external hardware load-balancer is used, is configuring an Oracle AS cluster needed then? The docs talk about clusters, but in some cases I'm not sure whether an Oracle AS cluster or a hardware cluster is meant.
2. It seems not entirely clear what type of application clustering to use in combination with an Oracle AS cluster: either multicast or peer-to-peer? If I'm correct the Oracle docs suggest to use dynamic peer-to-peer application clustering if an Oracle AS cluster is used and multicast for standalone OC4J. Is that correct?
Thanks,
Ronald1. Well, the idea is to have all clients route their HTTP requests to the physical load-balancer. The load-balancer will route/forward the requests to one of the Oracle AS nodes based on the load on those machines. If application state is synchronized between the application(s) on the OC4J instances, it would not be necessary to configure an Oracle AS cluster? Or are there advantages for having such a cluster? One of the pros I can think of would be that groups are automatically created so deployment/management of the application(s) becomes easier. Are there any other? Or is this configuration w/o Oracle AS cluster not a good idea?
2. Clear.
3. JMS, thanks for the tip.
4. Yes we use Oracle RAC. Does that impose constraints on the Oracle AS clustering and/or application clustering?
Ronald -
What am I trying to do?
I have tried installing Microsoft Exchange Server 2013 Cumulative Update 7 Setup on a fresh install of Windows Server 2012 R2 but it gets stuck when running the setup exe on Step 8 of 14 “Mailbox Transport Service” I have included full
error logs at the bottom of the page but the basics are in order it will throw which loop around are:
[01/20/2015 17:13:20.0084] [2] Beginning processing Set-SharedConfigDC
[01/20/2015 17:13:20.0178] [2] The call to Microsoft Exchange Active Directory Topology service on server 'TopologyClientTcpEndpoint (localhost)' returned an error. Error details No Minimal Required Number of Suitable Directory Servers
Found in Forest mydomain.com Site Default-First-Site and connected Sites..
[01/20/2015 17:13:20.0178] [2] No Minimal Required Number of Suitable Directory Servers Found in Forest mydomain.com Site Default-First-Site and connected Sites.
Exchange is currently running in the envirmonet on 2010 Sp3 I am installing 2013 CU7 fresh so I can migrate the databases over.
What am I running?
2 X DC on domain and forest functional level 2008R2 both writable
1 X fresh install of Windows 2012 R2 which is domain joined
What have I tried?
Checked Ipv6 is enabled on all DC NICS and Existing Exchange Servers
Rebooted every server
Run setup as Administrator
My account is part of the domain Enterprise Admin group
Tried adding "Exchange Server" or "Exchange Enterprise Servers" to the group policy and doing the relevant gpupdate /force and reboot :
Computer Configuration Windows Settings
Security Settings + Local Policies
User Rights Assignment Mange auditing and security log
Turned off firewall on DC and Exchange Server even stopped the service
Turned off all AV on the DC and Exchange Server
Checked I could telnet to global catalog servers on port 3268 which I can
Checked the global catalog records existed in DNS which they all do
Done the obvious ping tests all round which confirms connectivity
Schema has been prepared using appropriate commands before running the setup exe
setup.exe /PrepareSchema /IacceptExchangeServerLicenseTerms
Making sure the following path has full permissions:
EXCHANGE14:\Current\Release\Shared\Datacenter\Setup
Restarted Microsoft Exchange Active Directory Topology service
DcDiag all looks good
What have I noticed that is suspicious?
Microsoft Exchange Transport service will not start even though both of its dependences services have started:
Microsoft Filtering Management Service
Microsoft Exchange Active Directory Topology Service
It will eventually error with
“Windows could not start the Microsoft Exchange Transport Service on local computer
Error 1053: This Service did not respond to the start of control request in a timely fashion”
This error is from the GUI wizard itself:
Error:
The following error was generated when "$error.Clear();
$maxWait = New-TimeSpan -Minutes 8
$timeout = Get-Date;
$timeout = $timeout.Add($maxWait);
$currTime = Get-Date;
$successfullySetConfigDC = $false;
while($currTime -le $timeout)
$setSharedCDCErrors = @();
try
Set-SharedConfigDC -DomainController $RoleDomainController -ErrorVariable setSharedCDCErrors -ErrorAction SilentlyContinue;
$successfullySetConfigDC = ($setSharedCDCErrors.Count -eq 0);
if($successfullySetConfigDC)
break;
Write-ExchangeSetupLog -Info ("An error ocurred while setting shared config DC. Error: " + $setSharedCDCErrors[0]);
catch
Write-ExchangeSetupLog -Info ("An exception ocurred while setting shared config DC. Exception: " + $_.Exception.Message);
Write-ExchangeSetupLog -Info ("Waiting 30 seconds before attempting again.");
Start-Sleep -Seconds 30;
$currTime = Get-Date;
if( -not $successfullySetConfigDC)
Write-ExchangeSetupLog -Error "Unable to set shared config DC.";
" was run: "System.Exception: Unable to set shared config DC.
at Microsoft.Exchange.Configuration.Tasks.Task.WriteError(Exception exception, ErrorCategory category, Object target, Boolean reThrow, String helpUrl)
at Microsoft.Exchange.Configuration.Tasks.Task.WriteError(Exception exception, ErrorCategory category, Object target)
at Microsoft.Exchange.Management.Deployment.WriteExchangeSetupLog.InternalProcessRecord()
at Microsoft.Exchange.Configuration.Tasks.Task.<ProcessRecord>b__b()
at Microsoft.Exchange.Configuration.Tasks.Task.InvokeRetryableFunc(String funcName, Action func, Boolean terminatePipelineIfFailed)".
Exchange logs which have been written:
**The error will loop around for 8 minutes on trying to set-sharedconfig DC whatever this is trying to do ??
[01/20/2015 17:13:20.0084] [2] Active Directory session settings for 'Set-SharedConfigDC' are: View Entire Forest: 'True', Configuration Domain Controller:mydomain.com', Preferred Global Catalog: 'mydomain.com', Preferred Domain Controllers:
'{ mydomain.com}'
[01/20/2015 17:13:20.0084] [2] User specified parameters:
-DomainController:mydomain.com' -ErrorVariable:'setSharedCDCErrors' -ErrorAction:'SilentlyContinue'
[01/20/2015 17:13:20.0084] [2] Beginning processing Set-SharedConfigDC
[01/20/2015 17:13:20.0178] [2] The call to Microsoft Exchange Active Directory Topology service on server 'TopologyClientTcpEndpoint (localhost)' returned an error. Error details No Minimal Required Number of Suitable Directory Servers
Found in Forest mydomain.com Site Default-First-Site and connected Sites..
[01/20/2015 17:13:20.0178] [2] No Minimal Required Number of Suitable Directory Servers Found in Forest mydomain.com Site Default-First-Site and connected Sites.
[01/20/2015 17:13:20.0178] [2] The call to Microsoft Exchange Active Directory Topology service on server 'TopologyClientTcpEndpoint (localhost)' returned an error. Error details No Minimal Required Number of Suitable Directory Servers
Found in Forest mydomain.com Site Default-First-Site and connected Sites..
[01/20/2015 17:13:20.0178] [2] No Minimal Required Number of Suitable Directory Servers Found in Forest mydomain.com Site Default-First-Site and connected Sites.
[01/20/2015 17:13:20.0178] [2] Ending processing Set-SharedConfigDC
[01/20/2015 17:13:20.0193] [2] Beginning processing Write-ExchangeSetupLog
[01/20/2015 17:13:20.0193] [2] An error ocurred while setting shared config DC. Error: The call to Microsoft Exchange Active Directory Topology service on server 'TopologyClientTcpEndpoint (localhost)' returned an error. Error details
No Minimal Required Number of Suitable Directory Servers Found in Forest mydomain.com Site Default-First-Site and connected Sites..
[01/20/2015 17:13:20.0193] [2] Ending processing Write-ExchangeSetupLog
[01/20/2015 17:13:20.0193] [2] Beginning processing Write-ExchangeSetupLog
[01/20/2015 17:13:20.0193] [2] Waiting 30 seconds before attempting again.
[01/20/2015 17:13:20.0193] [2] Ending processing Write-ExchangeSetupLog
[01/20/2015 17:13:50.0195] [2] Beginning processing Write-ExchangeSetupLog
[01/20/2015 17:13:50.0273] [2] [ERROR] Unable to set shared config DC.
[01/20/2015 17:13:50.0273] [2] [ERROR] Unable to set shared config DC.
[01/20/2015 17:13:50.0288] [2] Ending processing Write-ExchangeSetupLog
[01/20/2015 17:13:50.0288] [1] The following 1 error(s) occurred during task execution:
[01/20/2015 17:13:50.0288] [1] 0. ErrorRecord: Unable to set shared config DC.
[01/20/2015 17:13:50.0288] [1] 0. ErrorRecord: System.Exception: Unable to set shared config DC.
at Microsoft.Exchange.Configuration.Tasks.Task.WriteError(Exception exception, ErrorCategory category, Object target, Boolean reThrow, String helpUrl)
at Microsoft.Exchange.Configuration.Tasks.Task.WriteError(Exception exception, ErrorCategory category, Object target)
at Microsoft.Exchange.Management.Deployment.WriteExchangeSetupLog.InternalProcessRecord()
at Microsoft.Exchange.Configuration.Tasks.Task.<ProcessRecord>b__b()
at Microsoft.Exchange.Configuration.Tasks.Task.InvokeRetryableFunc(String funcName, Action func, Boolean terminatePipelineIfFailed)
[01/20/2015 17:13:50.0288] [1] [ERROR] The following error was generated when "$error.Clear();
$maxWait = New-TimeSpan -Minutes 8
$timeout = Get-Date;
$timeout = $timeout.Add($maxWait);
$currTime = Get-Date;
$successfullySetConfigDC = $false;
while($currTime -le $timeout)
$setSharedCDCErrors = @();
try
Set-SharedConfigDC -DomainController $RoleDomainController -ErrorVariable setSharedCDCErrors -ErrorAction SilentlyContinue;
$successfullySetConfigDC = ($setSharedCDCErrors.Count -eq 0);
if($successfullySetConfigDC)
break;
Write-ExchangeSetupLog -Info ("An error ocurred while setting shared config DC. Error: " + $setSharedCDCErrors[0]);
catch
Write-ExchangeSetupLog -Info ("An exception ocurred while setting shared config DC. Exception: " + $_.Exception.Message);
Write-ExchangeSetupLog -Info ("Waiting 30 seconds before attempting again.");
Start-Sleep -Seconds 30;
$currTime = Get-Date;
if( -not $successfullySetConfigDC)
Write-ExchangeSetupLog -Error "Unable to set shared config DC.";
" was run: "System.Exception: Unable to set shared config DC.
at Microsoft.Exchange.Configuration.Tasks.Task.WriteError(Exception exception, ErrorCategory category, Object target, Boolean reThrow, String helpUrl)
at Microsoft.Exchange.Configuration.Tasks.Task.WriteError(Exception exception, ErrorCategory category, Object target)
at Microsoft.Exchange.Management.Deployment.WriteExchangeSetupLog.InternalProcessRecord()
at Microsoft.Exchange.Configuration.Tasks.Task.<ProcessRecord>b__b()
at Microsoft.Exchange.Configuration.Tasks.Task.InvokeRetryableFunc(String funcName, Action func, Boolean terminatePipelineIfFailed)".
[01/20/2015 17:13:50.0288] [1] [ERROR] Unable to set shared config DC.
[01/20/2015 17:13:50.0288] [1] [ERROR-REFERENCE] Id=AllADRolesCommonServiceControl___ee47ab1c06fb47919398e2e95ed99c6c Component=EXCHANGE14:\Current\Release\Shared\Datacenter\Setup
[01/20/2015 17:13:50.0288] [1] Setup is stopping now because of one or more critical errors.
[01/20/2015 17:13:50.0288] [1] Finished executing component tasks.
[01/20/2015 17:13:50.0304] [1] Ending processing Install-BridgeheadRole
Windows Event Viewer:
Process Microsoft.Exchange.Directory.TopologyService.exe (PID=5276) Forest mydomain.com. Exchange Active Directory Provider couldn't find minimal required number of suitable Global Catalog servers
in either the local site 'Default-First-Site' or the following sites:Hi apl228,
1. Please make sure the IPv6 is enabled.
2. Please make sure the account that install Exchange server has Administrator permission.
3. Please make sure DNS has been configured correctly.
Thanks
Mavis Huang
TechNet Community Support -
Manual enabling and disabling of activation agent in active-active topology
For Active-Active Topology for Adapters we can deploy and run Oracle BPEL Process Manager and business processes on all nodes but only one adapter service is running at any given time. In case of failover we need to manually disable the Activation Agent on the failed node & enable the activation agent on another node.
One customer has the below queries. Could anyone help.
a)Is there any way to automate the process of enabling and disabling of activation agent in active active topology ie failover is auto-detected and enabling & disabling happens automatically?
b)What is the suggested clustering topology for BPEL from oracle
Regards,
Senthil
Message was edited by:
user554076Customer tried the configuration given in the doc http://download-west.oracle.com/docs/cd/B31017_01/integrate.1013/b31005/life_cycle.htm#CIABHCFE
But after applying the changes they are getting the following error message: "Invalid activation parameter.Activation parameter Physical/Logical Directory has invalid value. Check the error stack and fix the cause of the error."
1. Why this error coming?
2. Also the doc said If the BPEL PM servers (JVMs) in the cluster are located across TCP/IP subnet boundaries, then it is necessary to add the attribute clusterAcrossSubnet=true. Can I have more details on parameter "clusterAcrossSubnet=true" (with an example preferred)
Regards,
Senthil -
Hello,
I'm writing to ask for a question regarding Active Directory Topology Configuration.
I have Site A, Site B and Site C:
Site A is directly connected to Site B;
Site B is directly connected to Site C;
Site A can reach Site C passing through Site A.
I have to define Site Link(s) under Active Directory Sites & Services.
Based on information above, which is best way to setup it ? As Best Practice it is recommended that a site link contain only two sites. That said is it recommended to create first two only or all of three Site Links below ?
Site Link Site A <=> Site B
Site Link Site B <=> Site C
Site Link Site A <=> Site C
Thank you.
Bye,
Luca
Disclaimer: This posting is provided AS IS with no warranties or guarantees, and confers no rights. Whenever you see a helpful reply, click on [Vote As Help] and click on [Mark As Answer] if a post answers your question.Hi Luca,
Regarding the environment here, I think two site links are enough.
When creating site links, ensure that every site is included in a site link. In addition, ensure that all sites are connected to each other through other site links so that the changes can be replicated from domain controllers in any site to all other sites.
See here:
Creating a Site Link Design
http://technet.microsoft.com/en-us/library/cc732837(v=ws.10).aspx
More reference:
Designing the Site Topology for Windows Server 2008 AD DS
http://technet.microsoft.com/en-us/library/cc772013(v=WS.10).aspx
How Active Directory Replication Topology Works
http://technet.microsoft.com/en-us/library/cc755994(WS.10).aspx#w2k3tr_repto_how_uvgz
Hope this helps
Best regards
Michael
If you have any feedback on our support, please click
here.
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. -
Can we configure BPM10gR3 in Active Passive topology.
Hi,
Can we configure/install BPM10gR3 on WLS in Active Passive topology at Primary & DR site respectively. Any links/References for BPM10gR3 DR topology recommendations?.
Thanks & Regards,
NLyou may be able to do that by setting up a primary & Secondary setup.
In the secondary setup just deploy the BPM engine/portal to weblogic but point to the same engine/fdi database. Keep secondary down for most part and only bring it up when primary is down.
HTH -
Active-active vs Active-pasive topology
We are trying to install soa-suite in High Availability Environment.
I understand that active-active more scalable and better performance.
Is any body know on how much more work to install active-active topology?
Is it a lot more difficult to maintain in active-active compare to active-passive?
What is drawback of having active-active enrironment?
Is most people using active-active or active-passive?
Thanks
AndrewHello,
You will have more chance to find an answer in the Oracle Application Server - General.
Regards
Tugdual Grall -
2 Node ( Active + Activer Cluster )
i want to setup 2 node cluster in active + active topology .so that one node fails all services will be running on single node .
can anyone guide me in this regard
RegardsThis is the normal way that a cluster would be set up. Just read the manuals for the data services you are trying to create.
http://docs.sun.com/app/docs/coll/1124.4
Tim
--- -
Global load balancing/active active vip and virtual interface redundancy
Is there a way to configure both of these technologies without exposing the external addressing to the internal network? I have active active within the data center and would like to have active/active across two data centers but I don't see any way to use internal addressing for my content rules and still use them for dns unless I can specify records without using content rules. Thanks.
http://www.cisco.com/en/US/products/hw/contnetw/ps789/products_configuration_example09186a008009438a.shtml
http://www.cisco.com/en/US/products/hw/contnetw/ps792/products_configuration_guide_chapter09186a0080157898.htmlHi Victor,
In response to your questions regarding doing Active/Active GSLB using VIP and interface redundancy.
Rule Based GSLB will not work with VIP/Interface
redundancy.
The reason is because the CSS can not set up an app session to a redundant
interface, it needs to set the app session up to a real interface. Thus, a
full mess topology must be used for GSLB and vip/interface redudancy.
Bug ID CSddw27861 reported this problem and engineering added the command
"ap-kal-vip" to support a full mess topology. This command can only be used
under zone based GSLB and not rule based.
The syntax for the command would be:
dns-record a www.work.com 5.5.5.5 0 single kal-ap-vip 1.1.1.1
rule/ACL based GSLB with vip/int redundancy will not work.
Regards,
Mark -
Future N2000 active/active server dual-homing
Can anyone comment if the capability to have an active/active topology between N5000s and N2000s, combined with server etherchannels multi-homed across the FEXs? This would allow two levels of VPC. If this is planned, will it be possible to have more than one host link per FEX in the etherchannel/VPC bundle?
Thanks.As the practice of replication I know her mostly said she has some flaws when I do the replication of my domain to another server but it works correctly, so having a server "master" and the other ServidorBKP as "slave", in redundancy,
the problem is when I say, and put the "ServidorBKP" being my primary domain controller and disabling my main controller, to disable or turn off my main controller the stations themselves are unable to login because it does not communicate with the
my ServidorBKP "slave" even I put it as the main driver of course.
Regarding the System State as far as I know this option existed in Server 2003.
I also got some information, confer on the links below.
http://msdn.microsoft.com/en-us/library/bb727048.aspx
http://technet.microsoft.com/pt-br/library/cc758435(v=ws.10).aspx
http://technet.microsoft.com/en-us/library/cc961934.aspx
I'm still researching other ways, getting communicate any news to everyone. (Google Translate)
Matias Duarte Coordenador de T.I. Dual Solucoes® | Soluções em tecnologia da informação http://www.matiasduarte.com.br -
Asa in active/active vpn solution licensing question
Hello All
I have a customer with the following requirements:
1) A Cisco VPN Solution that will be support SSL VPN and Cisco Client VPN - The solution will be a failover configuration running in an active-active set up. The solution offered will be fully supported (i.e. it will not go into End of Life or and lower level of support etc) by Cisco for the next 5 Years.
a. We would expect the devices to be similar to the ASA 5520 Appliance with SW,HA,$GE+1FE,£DES/AES (Including ASA 5500 Advanced Endpoint ASS)
2) User licenses for the above - Please quote for both the following
a. 500 appropriate SSL VPN User Licenses
b. 250 appropriate SSL VPN User Licenses
I am quoting them for the 500 ssl vpn bundle
ASA5520-SSL500-K9 and for the
ASA5520-BUN-K9.
Is it right that in active/active software 8.3 and above that the 500 ssl vpn licenses will be shared between the 2 asa's or will I need to have 250 licenses on each asa.
Also I have read that in active/active I cannot use shared licenses, is this relevant in a vpn solution?
http://www.cisco.com/en/US/docs/security/asa/asa84/license/license_management/license_86.html#wp2003381
Url above has this “The backup server mechanism is separate from, but compatible with, failover.
Shared licenses are supported only in single context mode, so Active/Active failover is not supported.”
Also “Failover Guidelines
•Shared licenses are not supported in Active/Active mode. See the "Failover and Shared Licenses" section for more information.
I also need to purchase the
ASA-ADV-END-SEC and
ASA-AC-M-5520 (any connect mobile) as the vpn client is eos/eol.
Do I need to buy this for both asa's or can they share them in active/active mode.
Thanks in advance.
FeisalHi Vibhor and thanks for the quick reply. We will be using version 9.3. I was aware that the ASA does not support PBR but I thought with the new code you could do some policy nat that could help influence the outbound flow?
So in this case we have 2x ISPs and 2x public address space, one from each ISP. How is the NAT and routing handled by the ASA in this design?
Can I not identify the guest subnet (192.168.0.0/22) and NAT this to a public address from ISP1 and also identify the corp subnets (10.x.x.x) and NAT them to ISP2?
My understanding (which is probably wrong) is that the NAT will select the egress interface rather than the routing table, so guest will be sent via ISP1 since the SVI interface of the ASA that connects to this ISP1 has an IP address from the same public address space..?
Is that incorrect?
Many thanks
Rays -
Unable to failover the services in active-active cluster node
Hi,
i am applying the sp2 patch for sql server 2008 r2 in active-active cluster, we have 3 services in the cluster , node 1 as 2 prefered owner and node 2 as 1 prefered owner, when i try to move the service from node 2 to node1 , i am getting the below errors
DCOM was unable to communicate with the computer XXXXXXXXX using any of the configured protocols.
The Kerberos client received a KRB_AP_ERR_MODIFIED error from the server XXXXXXXXX. The target name used was RPCSS/XXXXXX. This indicates that the target server failed to decrypt the ticket provided by the client. This can occur when the target server principal
name (SPN) is registered on an account other than the account the target service is using. Please ensure that the target SPN is registered on, and only registered on, the account used by the server. This error can also happen when the target service is using
a different password for the target service account than what the Kerberos Key Distribution Center (KDC) has for the target service account. Please ensure that the service on the server and the KDC are both updated to use the current password. If the server
name is not fully qualified, and the target domain (XXXXXX) is different from the client domain (XXXXXXX), check if there are identically named server accounts in these two domains, or use the fully-qualified name to identify the server.
The Cluster service failed to bring clustered service or application 'CHCROCHC045' completely online or offline. One or more resources may be in a failed state. This may impact the availability of the clustered service or application.
Cluster resource 'SQL Server (CHCROCHC045)' in clustered service or application 'CHCROCHC045' failed.
any inputs appreciated to resolve this issue as i could not procedd with patching
BR
PGRHi PGR,
As the issue is more related to Windows Server, I would like to recommend you post the issue in the
Windows Server forums for better support.
In addition, below are some article about troubleshooting error ” DCOM was unable to communicate with the computer XXXXXXXXX using any of the configured protocols” for your reference.
Event ID 10009 — COM Remote Service Availability
How to troubleshoot DCOM 10009 error logged in system event?
Thanks,
Lydia Zhang
Lydia Zhang
TechNet Community Support -
How can we achive active/active cluster setup with Oracle
Hi Experts,
How can we achieve active/active database setup with oracle WITHOUT USING RAC.. As far as I know it's impossible (unless I'm wrong)..
We are using Oracle 11.2.0.1 64bit on Windows 2008 server. We deployed Oracle FailSafe but that's more of an active/passive solution based on a windows cluster.
The other solution we were thinking about is to use DataGuard and replication.. two servers.. the oracle instance running on one server generating logs, and the other server receive the logs and apply them to the physical standby db.. Still, this is not a real active/active setup.
So, is it possible to run 2 servers in an active/active cluster and have the oracle database in an active/active setup or have the instance running on multiple nodes (at the same time)?
ThanksLet me give you a brief explanation of what the situation is and you can be the judge..
My client have four databases with the smallest one being 20GB and the biggest around the 35gb (SGA 750mb to 1.4gb (Tiny by DB standards) and probably on a normal day, you can run all four of them on a decent desktop).. The DBs are used to keep track of people information. Through out the year, the databases are almost sitting idle, and by idle I mean, the odd update here and there, the odd report..etc. No hard real processing of any sort. Two days of the year (end of year) we have all the operators consolidating records and what's not and they will be pounding away entering data and updating the tables - with hourly reports that goes to 3rd parties. The client expects a 99.99 up time and availability during those 2 days.
Now, tell me, How can I justify using RAC and spending hundreds of thousands of dollars in licensing and what ever extra costs introduced by the complexity of the environment for the above scenario knowing that I don't have any real use for RAC for 363 days of the year; and we MIGHT need it for 2 days of the year? This is the dilemma we're facing.
Thanks
Edited by: rsar001 on Sep 3, 2010 9:42 AM -
Exchange 2013 - Unbound Stretched Active/Active DAG
I'm designing an Active/Active DAG utilizing a 3-site scenario, with the third site for FSW.
I intend to have 3 CAS+MBX servers in each location.
Site A & B are separately co-located and Site C is geographically distant site for the FSW
Should the WAN connections of Site A go down (for whatever reason), do the passive copies of Site A's DB's on Site B automatically mount?
What happens with the copies in Site A when this is going on, and what occurs when the links are restored? Is there any manual intervention required here and is DAC/Split-Brain syndrome a concern at all?
What if the client doesn't want Auto-failover, can blockautoactivation be set for the passive DB's to -SiteOnly?Hi Hayley,
Q:- Should the WAN connections of Site A go down (for whatever reason), do the passive
copies of Site A's DB's on Site B automatically mount?
Yes it could be automatically mount depends on DAC mode, you should enable it by default it is disable.
Q:- What happens with the copies in Site A when this is going on, and what occurs when the links
are restored? Is there any manual intervention required here and is DAC/Split-Brain syndrome a concern at all?
Site A copy would be like Passive Copy which will get the log shipping from Site B once the WAN link will be up and running, as the DAC mode is enable will not allow
the Site A database to mount its database once it will up and running,
You can later change your active copy to Site A.
Q: - What
if the client doesn't want Auto-failover, can blockautoactivation be set for the passive DB's to -SiteOnly?
Please check the below link for better understanding.
http://technet.microsoft.com/en-us/library/dd979790(v=exchg.150).aspx
Thanks & Regards
Ashish Gaur
Ashish Gaur
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I'm getting poor image quality when rendering PDF grahics
I have a PAL 1920x1080 50i ProRes 422 timeline, when I add PDF images from a Power Point I have to enlarge them about 100% to fill the frame adequately. When these clips are rendered they end up with the text loosing definition and showing jpeg like
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Where is WEP encryption for internet sharing?
Hi, I used to share my internet via wifi on osx. Since I upgraded to Marvericks my WEP encryption has gone and there are only two options. "WPA2 Personal" and "None". Does anyone encounter the same problem ?
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How can i save it permanently to my iPhone when everytime I sync i cant access it ? When i use home sharing as soon as the wifi is down it doesnt work ? I need it to be saved to my phone and I can use it on the go ! I need help, its killing me !!!!!!
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Where is the windows 10 reserve button
I cant seem to find the windows 10 reserve button on my acer aspire switch 10 even though i have all the windows updates, even the optional ones Please Help Me!!