Enterprise Load Balancer

      Dear Team,
I would like to know about Enterprise load balancer best hardware and software which is recommended for cisco devices and how its work in Enterprise network where i have 3 ISP , actually i want to implement this in our infrastrusture.
Kindly help
hari

You have to remember that the 9.0.4 release isn't that new either. However, you can basically use every load balancer out there if they support 1) Sticky/Persistent sessions and 2) Nat client.
You may also want to check this link:
http://www.oracle.com/technology/products/ias/hi_av/Tested_LBR_FW_SSLAccel.html
Regards,
Martin

Similar Messages

Lync 2013 Enterprise load balancing on the front end and edge pool

Hi,
I am setting up a Lync 2013 Enterprise deployment consisting of a Front End pool (x2 FE servers) and an Edge pool (x2 Edge servers). I'm seeing some conflicting advice regarding load balancing using hardware or DNS for the front end and the edge.
On the front end I have 2 internal DNS records 'lyncfepool1.contoso.local' each of which map to one of the IPs of the FE servers. I've used my details to populate the Detailed Design Planner excel spreadsheet and am told that I require a HLB to load
balance my front end pool. I'm aware of the need to load balance HTTPS traffic internally (which will be done by TMG) however other traffic to the front end (SIP, etc) can be balanced by DNS only, and not require a HLB?
Can someone clarify the front end requirement?
Also - looking now at the edge pool - this site again have two edge servers in a pool. We are using a total of six private IP addresses, two per edge service (2 x av.contoso.com, 2 x sip.contoso.com and 2 x webcon.contoso.com). These will be
NAT'ed by the external firewall and directed to the respective external (DMZ) IP addresses on the Edge servers on port 443. I know this isn't true roundrobin due to the intelligence of the Lync client when connecting (in that the Lync client will connect
to one of the public IPs and if it can't connect, it will know to connect to the other service IP), however I want to clarify this set up, particularly the need to direct the external public IP traffic at the DMZ Edge IP specified in the topology builder.
I've attached a basic diagram of the external/DMZ/Edge side which hopefully helps with this question
Persevere, Persevere, Per..

That is because you will always need HLB for a front-end server since it hosts the Lync webservices which use HTTP/HTTPS traffic.
The description on the calculation tool also describes this correctly:
Supports Standard and Enterprise pools (up to 12 nodes), with pure device-based load balancing or a combination of DNS load balancing and device-based load balancing (for
Lync web services)
You can use either Hardware or DNS loadbalancing for SIP traffic only, but you will always need a HLB for the webservices. Both are applicable for the Front-End so you have either
full HLB for both SIP and HTTP(S) traffic
DNS LB for SIP traffic and HLB for HTTP(S) traffic
Hope this is more clear :-)
Lync Server MVP | MCITP Lync Server 2010 | If you think my post is the answer to your question, please mark it as answer so future visitors can easily find it.

Flash media server 4 enterprise load balancing

G'day chaps, me and my mates have purchased a copy of Flash Media Server 4 Enterprise edition for use on our web project. Since we will be transmitting to large amounts of users through this exceptional piece of software, we will be needing to run more than one server at once. Before going ahead and doing anything against the policies we have decided to post here on the support forums and inquire about being able to run multiple copies of Flash Media Server 4 Enterprise edition with one Serial KEY ( 10 x GigE dedicated servers ). If this is not possible, how can me and my chappies load balance all the traffic through one Flash Media Server 4 Enterprise edition.

Hi there bluray,
Congrats on your FMES purchase - we really hope FMS meets all your needs. Although you'll not be permitted by your license to use it for more than one server installation you should be aware that FMS 4 has new scalability functionality that should enable you to scale beyond what you're currently expecting. You may want to get immediately familiar with RTMFP and peer assisted networking. FMS has the capability to serve as your personal introducer leveraging the power of peer to peer to scale more massively than a single installation is capable of.
Here's a little snippet about it
http://www.adobe.com/devnet/flashmediaserver/articles/p2p_rtmfp_groups.html
or
http://en.wikipedia.org/wiki/Real_Time_Media_Flow_Protocol
Hope that helps.
Asa

ICM/IPCC Enterprise: Load Balancing between 2 IVRs using System PG

Hi,
I have a question and I am not able to see the solution. I have 2 IVR type 9 configured into a System PG with two IVR pims. The problem is that when I perform a call, the call always goes to IVR number 2 and if I stop this IVR, the system doesn't work. I have verified that all is well configured, but I don't where the problem resides.
Any ideas?
Regards

Thank you for your answers.
David, I have verified that both PIMs are active.
Dchumbley, I have execute rttest status and this is the response:
Controller           LastStateChange             LastHeartBeat
IPCCSystem,1     CFO 01/21 08:40:55 (4.9 day)    01/26 08:33:44 (15 sec)
MediaRouting,2   CFO 01/18 12:28:40 (7.8 day)    01/26 08:33:57 (2 sec)
Peripheral           LastStateChange             LastHeardFrom
BADialer         CO --                          01/18 12:28:43 (7.8 day)
CallManagerPIM   COS 01/22 12:45:24 (3.8 day)    01/26 08:33:51 (8 sec)
I have tested the following scenario:
If I have configured the network VRU with a label from the first IVR, the call arrives to first IVR, but if I configure 2 labels for both IVRs, the call always arrives the second IVR.
Any ideas?
Regards

Could not retrieve Enterprise Global Template - Load balancer issue

Hi,
We have 4 Project Server 2010 servers. The 4 web servers are load balanced by networking team with sticky session configured.
When we try to connect to the Project Server using MPP 2007 SP2, it fails saying 'Could not retrieve Enterprise Global template'. It works perfect when we point to a specific server by specifying the IP address for server name in the 'hosts'
file.
Earlier we observed some errors in the event viewer related to the SharePoint's internal load balancer for which restarted the 'Project Server Application' on each web server and it got fixed.
Now, the only entries that we see related to load balancer are as mentioned below as Information (not errors).
SharePoint Web Services Round Robin Service Load Balancer Event: Initialization
Process Name: w3wp
Process ID: 15080
AppDomain Name: /LM/W3SVC/539065287/ROOT-1-130462463500778047
AppDomain ID: 2
Service Application Uri: urn:schemas-microsoft-com:sharepoint:service:ae7c7ee5c09b4e8198bdbb1ecb8c1c1b#authority=urn:uuid:9f626d347784423eb14bde4a1f4d13fc&authority=https://lonms12546:32844/Topology/topology.svc
Active Endpoints: 4
Failed Endpoints:0
Endpoint List:
http://lonxxx2532:32843/ae7c7ee5c09b4e8198bdbb1ecb8c1c1b/PSI
http://lonxxx2545:32843/ae7c7ee5c09b4e8198bdbb1ecb8c1c1b/PSI
http://lonxxx2546:32843/ae7c7ee5c09b4e8198bdbb1ecb8c1c1b/PSI
http://lonxxx2566:32843/ae7c7ee5c09b4e8198bdbb1ecb8c1c1b/PSI
Could the issue be due to network load balancer?
Could the issue be due to Sticky session configuration on the load balancer.?
How can we get to the root cause of the issue?
Which logging category should we set to 'Verbose' that can give us some hint.
Update: We tried to capture the requests through fiddler and observed that when fiddler is running on the client computer then the connection works perfectly fine even through the load balancer. Probably fiddler is reformatting the SOAP
envelop of the web service requests the way it should before sending the request to the server.
If we do not run fiddler and run some other similar tool (like Charles) then it again gives the issue and the request stucks at /PWA/_vti_bin/psi/winproj.asmx
We ran Wireshark on the servers and found the following for that web service call:
[TCP Previous segment not captured] Continuation or non-HTTP traffic.
Please let me know if someone could provide any hint what can be done next.
Regards, Amit Gupta

There are several ways to configure your load balancer. I would suggest that you work with the network engineer, the load balancer vendor and your project administrator to resolve this issue.
Basically you need URL to be resolved correctly. Also, I don't believe PS2007 did a good job handling load balancing, so you may need to bring someone in good with IIS and see they can tweek IIS to manage the cache better.
As I go back and look at your analysis, I think you should probably look at upgrading to Project Server 2013. They made some improvement in load balancing and the management of distributive cache.
I assume you have 4 WFE because you have thousands of project users. Roughly how many you have? Over 1000, over 5000
Have you tried to see if using two load balancing work? How about just one front end. I often see companies scaling SharePoint and Project server to extremes.
Michael Wharton, MVP, MBA, PMP, MCT, MCTS, MCSD, MCSE+I, MCDBA
Website http://www.WhartonComputer.com
Blog http://MyProjectExpert.com contains my field notes and SQL queries

DNS load balancing for Enterprise serevrs

Hi All
In my test Lync 2010 Enterprise environments, recently i have implemented the DNS load balancing with webservices
My environment is two lync 2010 ent servers , 1 SQL server, 1 Monitoring + Archive server (Same Box)
The below steps was performed from me for DNS load balancing.
PLEASE NOTE: NO HARDWARE LOAD BALANCING IN MY SETUP
Create a Host record for the Pool name with respective front end servers
Pool name : Pool2.doitnow.com with 2 lync 2010 enterprise servers named lyncfe01n.doitnow.com (192.168.1.5) and lyncfe02.doitnow.com (192.168.1.6)
Two host A records in DNS as POOl2 with IP of 192.168.15 and 192.168.1.6
1. From the Lync Server 2010 program group, open Topology Builder.
2. From the console tree, expand the Enterprise Edition Front End pools node.
3. Right-click the pool, click Edit Properties, and then click
Web Services.
4. Below Internal web services, select the Override FQDN check box.
5. Type the pool FQDN that resolves to the physical IP addresses of the servers in the pool. in
(my case it is Pool2.doitnow.com )
6. Below External web services, type the external pool FQDN that resolves to the virtual IP addresses of the pool, and then click
OK. ((my case it is Pool2.doitnow.com ) - is that REQUIRED ?
7. From the console tree, select Lync Server 2010 , and then in the
Actions pane, click Publish Topology.
IS THERE ANY THING TO BE DONE APART fROM ABOVE POINTS
Now
what i did is. in lyncfe01n.doitnow.com - i have disabled the network card and try to login lync 2010 client , but not succeesfull
my assumption is, it should work via lyncfe02.doitnow.com, since load balanace in DNS is in already in place
do i need to open / firewall rule to be creany port in second lync server
here is the below seqeunce of event viwer from lync
Log Name:      Lync Server
Source:        LS User Services
Date:          1/14/2014 3:34:31 PM
Event ID:      32108
Task Category: (1006)
Level:         Warning
Keywords:      Classic
User:          N/A
Computer:      lyncfe01n.doitnow.com
Description:
Pool Manager changed state of Registrar with FQDN: lyncfe02.doitnow.com to Inactive.
======
Log Name:      Lync Server
Source:        LS User Services
Date:          1/14/2014 3:35:01 PM
Event ID:      32109
Task Category: (1006)
Level:         Information
Keywords:      Classic
User:          N/A
Computer:      lyncfe01n.doitnow.com
Description:
Pool Manager changed state of Registrar with FQDN: lyncfe02.doitnow.com to Active
====
Log Name:      Lync Server
Source:        LS Routing Data Sync Agent
Date:          1/14/2014 3:50:58 PM
Event ID:      48003
Task Category: (1058)
Level:         Information
Keywords:      Classic
User:          N/A
Computer:      lyncfe01n.doitnow.com
Description:
The Routing Data Sync Agent has initiated a sync cycle with: [pool2.doitnow.com]
=====
Log Name:      Lync Server
Source:        LS User Services
Date:          1/14/2014 3:56:21 PM
Event ID:      32108
Task Category: (1006)
Level:         Warning
Keywords:      Classic
User:          N/A
Computer:      lyncfe01n.doitnow.com
Description:
Pool Manager changed state of Registrar with FQDN: lyncfe02.doitnow.com to Inactive.
===============
Log Name:      Lync Server
Source:        LS File Transfer Agent Service
Date:          1/14/2014 3:56:45 PM
Event ID:      1008
Task Category: (1121)
Level:         Error
Keywords:      Classic
User:          N/A
Computer:      lyncfe01n.doitnow.com
Description:
Failed to read Central Management database information from AD connection point. Microsoft Lync Server 2010, File Transfer Agent will continuously attempt to retrieve this information.
While this condition persists, configuration changes will not be delivered to replica machines.
Exception:
Microsoft.Rtc.Management.ADConnect.ADTransientException: Active Directory error "-2147016646" occurred while searching for domain controllers in domain "doitnow.com": "The server is not operational.
Name: "doitnow.com"
" ---> System.DirectoryServices.ActiveDirectory.ActiveDirectoryServerDownException: The server is not operational.
Name: "doitnow.com"
---> System.Runtime.InteropServices.COMException (0x8007203A): The server is not operational.
   at System.DirectoryServices.DirectoryEntry.Bind(Boolean throwIfFail)
   at System.DirectoryServices.DirectoryEntry.Bind()
   at System.DirectoryServices.DirectoryEntry.get_AdsObject()
   at System.DirectoryServices.PropertyValueCollection.PopulateList()
   at System.DirectoryServices.PropertyValueCollection..ctor(DirectoryEntry entry, String propertyName)
   at System.DirectoryServices.PropertyCollection.get_Item(String propertyName)
   at System.DirectoryServices.ActiveDirectory.PropertyManager.GetPropertyValue(DirectoryContext context, DirectoryEntry directoryEntry, String propertyName)
   --- End of inner exception stack trace ---
   at System.DirectoryServices.ActiveDirectory.PropertyManager.GetPropertyValue(DirectoryContext context, DirectoryEntry directoryEntry, String propertyName)
   at System.DirectoryServices.ActiveDirectory.Domain.GetDomain(DirectoryContext context)
   at Microsoft.Rtc.Management.ADConnect.Connection.DirectoryServicesTopologyProvider.GetDCForDomain(String fqdn, NetworkCredential networkCredential)
   --- End of inner exception stack trace ---
   at Microsoft.Rtc.Management.ADConnect.Connection.DirectoryServicesTopologyProvider.GetDCForDomain(String fqdn, NetworkCredential networkCredential)
   at Microsoft.Rtc.Management.ADConnect.Connection.DirectoryServicesTopologyProvider.DiscoverDC()
   at Microsoft.Rtc.Management.ADConnect.Connection.DirectoryServicesTopologyProvider.ReportDownServer(String serverName, ADServerRole role)
   at Microsoft.Rtc.Management.ADConnect.Connection.ADConnection.MarkDown(LdapError ldapError, String message)
   at Microsoft.Rtc.Management.ADConnect.Connection.ADConnection.AnalyzeDirectoryError(DirectoryException de)
   at Microsoft.Rtc.Management.ADConnect.Session.ADSession.AnalyzeDirectoryError(ADConnection connection, DirectoryRequest request, DirectoryException de, Int32 totalRetries, Int32 retriesOnServer)
   at Microsoft.Rtc.Management.ADConnect.Session.ADSession.Find(ADObjectId rootId, String optionalBaseDN, QueryScope scope, QueryFilter filter, SortBy sortBy, Int32 maxResults, IEnumerable`1 properties, CreateObjectDelegate objectCreator, CreateObjectsDelegate
arrayCreator, Boolean includeDeletedObjects)
   at Microsoft.Rtc.Management.ADConnect.Session.ADSession.Find(ADObjectId rootId, QueryScope scope, QueryFilter filter, SortBy sortBy, Int32 maxResults, IEnumerable`1 properties, CreateObjectDelegate objectCtor, CreateObjectsDelegate arrayCtor)
   at Microsoft.Rtc.Management.ADConnect.Session.ADSession.Find[TResult](ADObjectId rootId, QueryScope scope, QueryFilter filter, SortBy sortBy, Int32 maxResults, IEnumerable`1 properties)
   at Microsoft.Rtc.Management.ADConnect.Session.ADSession.GetTopologySetting()
   at Microsoft.Rtc.Management.ADConnect.Session.ADSession.GetBackEndServer()
   at Microsoft.Rtc.Xds.Replication.Common.Utils.TryGetConnectionPointFromAD(String& sqlStorePath, Exception& exception)
Cause: Possible issues with configuration or AD access.
Resolution:
Ensure that activation is completed and AD is accessible from this machine.
   at Microsoft.Rtc.Xds.Replication.Common.Utils.TryGetConnectionPointFromAD(String& sqlStorePath, Exception& exception)</Data>
====================
Log Name:      Lync Server
Source:        LS Master Replicator Agent Service
Date:          1/14/2014 3:56:45 PM
Event ID:      2014
Task Category: (2122)
Level:         Error
Keywords:      Classic
User:          N/A
Computer:      lyncfe01n.doitnow.com
Description:
Failed to read Central Management database information from AD connection point. Microsoft Lync Server 2010, Master Replicator Agent will continuously attempt to retrieve this information.
While this condition persists, configuration changes will not be delivered to replica machines.
Exception:
System.ApplicationException: Domain "doitnow.com" cannot be contacted or does not exist. ---> System.DirectoryServices.ActiveDirectory.ActiveDirectoryObjectNotFoundException: The specified domain does not exist or cannot be contacted.
   at System.DirectoryServices.ActiveDirectory.Domain.GetDomain(DirectoryContext context)
   at Microsoft.Rtc.Management.ADConnect.Connection.DirectoryServicesTopologyProvider.GetDCForDomain(String fqdn, NetworkCredential networkCredential)
   --- End of inner exception stack trace ---
   at Microsoft.Rtc.Management.ADConnect.Connection.DirectoryServicesTopologyProvider.GetDCForDomain(String fqdn, NetworkCredential networkCredential)
   at Microsoft.Rtc.Management.ADConnect.Connection.DirectoryServicesTopologyProvider.DiscoverDC()
   at Microsoft.Rtc.Management.ADConnect.Connection.DirectoryServicesTopologyProvider.ReportDownServer(String serverName, ADServerRole role)
   at Microsoft.Rtc.Management.ADConnect.Connection.ADConnection.MarkDown(LdapError ldapError, String message)
   at Microsoft.Rtc.Management.ADConnect.Connection.ADConnection.AnalyzeDirectoryError(DirectoryException de)
   at Microsoft.Rtc.Management.ADConnect.Session.ADSession.AnalyzeDirectoryError(ADConnection connection, DirectoryRequest request, DirectoryException de, Int32 totalRetries, Int32 retriesOnServer)
   at Microsoft.Rtc.Management.ADConnect.Session.ADSession.Find(ADObjectId rootId, String optionalBaseDN, QueryScope scope, QueryFilter filter, SortBy sortBy, Int32 maxResults, IEnumerable`1 properties, CreateObjectDelegate objectCreator, CreateObjectsDelegate
arrayCreator, Boolean includeDeletedObjects)
   at Microsoft.Rtc.Management.ADConnect.Session.ADSession.Find(ADObjectId rootId, QueryScope scope, QueryFilter filter, SortBy sortBy, Int32 maxResults, IEnumerable`1 properties, CreateObjectDelegate objectCtor, CreateObjectsDelegate arrayCtor)
   at Microsoft.Rtc.Management.ADConnect.Session.ADSession.Find[TResult](ADObjectId rootId, QueryScope scope, QueryFilter filter, SortBy sortBy, Int32 maxResults, IEnumerable`1 properties)
   at Microsoft.Rtc.Management.ADConnect.Session.ADSession.GetTopologySetting()
   at Microsoft.Rtc.Management.ADConnect.Session.ADSession.GetBackEndServer()
   at Microsoft.Rtc.Xds.Replication.Common.Utils.TryGetConnectionPointFromAD(String& sqlStorePath, Exception& exception)
Cause: Possible issues with configuration or AD access.
Resolution:
Ensure that activation is completed and AD is accessible from this machine.
===============
Log Name:      Lync Server
Source:        LS Inbound Routing
Date:          1/14/2014 3:56:46 PM
Event ID:      45005
Task Category: (1037)
Level:         Error
Keywords:      Classic
User:          N/A
Computer:      lyncfe01n.doitnow.com
Description:
Unexpected exception occurred in the Inbound Routing Application.
======================================
Log Name:      Lync Server
Source:        LS User Services
Date:          1/14/2014 3:56:53 PM
Event ID:      30975
Task Category: (1006)
Level:         Warning
Keywords:      Classic
User:          N/A
Computer:      lyncfe01n.doitnow.com
Description:
Encountered a connection failure while executing a request against the back-end.
Back-end: sql.doitnow.com\rtc
Log Name:      Lync Server
Source:        LS User Services
Date:          1/14/2014 3:56:53 PM
Event ID:      32134
Task Category: (1006)
Level:         Error
Keywords:      Classic
User:          N/A
Computer:      lyncfe01n.doitnow.com
Description:
Failed to connect to back-end database. Lync Server will continuously attempt to reconnect to the back-end. While this condition persists, incoming messages will receive error responses.
Back-end Server: sql.doitnow.com\rtc   Database: rtc Connection string of:
driver={SQL Server Native Client 10.0};Trusted_Connection=yes;AutoTranslate=no;server=sql.doitnow.com\rtc;database=rtc;
Cause: Possible issues with back-end database.
Resolution:
Ensure the back-end is functioning correctly.
=================
Log Name:      Lync Server
Source:        LS User Services
Date:          1/14/2014 3:56:53 PM
Event ID:      32112
Task Category: (1006)
Level:         Warning
Keywords:      Classic
User:          N/A
Computer:      lyncfe01n.doitnow.com
Description:
Pas with FQDN: Pool2.doitnow.com has been detected to be down.
=================
Log Name:      Lync Server
Source:        LS User Services
Date:          1/14/2014 3:56:54 PM
Event ID:      32098
Task Category: (1006)
Level:         Warning
Keywords:      Classic
User:          N/A
Computer:      lyncfe01n.doitnow.com
Description:
Failed processing conference status requests. This error might delay the freeing up of PSTN meeting ids in conference directories homed on this pool.
Error code: 0x800407D0
Cause: Possible issues with back-end or Lync Server health.
Resolution:
Ensure the Lync Server service is healthy.
===========
Log Name:      Lync Server
Source:        LS User Replicator
Date:          1/14/2014 3:58:33 PM
Event ID:      30022
Task Category: (1009)
Level:         Warning
Keywords:      Classic
User:          N/A
Computer:      lyncfe01n.doitnow.com
Description:
The connection to domain controller DC01.doitnow.com appears to have been terminated. The domain controller could have gone down. User Replicator will attempt to reconnect to an available domain controller for this domain.
=====
Log Name:      Lync Server
Source:        LS File Transfer Agent Service
Date:          1/14/2014 3:58:43 PM
Event ID:      1035
Task Category: (1121)
Level:         Error
Keywords:      Classic
User:          N/A
Computer:      lyncfe01n.doitnow.com
Description:
Failed to register with back-end database. Microsoft Lync Server 2010, File Transfer Agent will continuously attempt to reconnect to the back-end. While this condition persists, no replication will be done.
The Connection string: Data Source         = sql.doitnow.com\rtc;
                Database            = xds;
                Max Pool Size       = 5;
                Connection Timeout = 60;
                Connection Reset    = false;
                Enlist              = false;
                Integrated Security = true;
                Pooling             = true;
Exception: [-1] Could not connect to SQL server : [Exception=System.Data.SqlClient.SqlException: A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that
the instance name is correct and that SQL Server is configured to allow remote connections. (provider: SQL Network Interfaces, error: 26 - Error Locating Server/Instance Specified)
   at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection)
   at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj)
   at System.Data.SqlClient.TdsParser.Connect(ServerInfo serverInfo, SqlInternalConnectionTds connHandler, Boolean ignoreSniOpenTimeout, Int64 timerExpire, Boolean encrypt, Boolean trustServerCert, Boolean integratedSecurity, SqlConnection owningObject)
   at System.Data.SqlClient.SqlInternalConnectionTds.AttemptOneLogin(ServerInfo serverInfo, String newPassword, Boolean ignoreSniOpenTimeout, Int64 timerExpire, SqlConnection owningObject)
   at System.Data.SqlClient.SqlInternalConnectionTds.LoginNoFailover(String host, String newPassword, Boolean redirectedUserInstance, SqlConnection owningObject, SqlConnectionString connectionOptions, Int64 timerStart)
   at System.Data.SqlClient.SqlInternalConnectionTds.OpenLoginEnlist(SqlConnection owningObject, SqlConnectionString connectionOptions, String newPassword, Boolean redirectedUserInstance)
   at System.Data.SqlClient.SqlInternalConnectionTds..ctor(DbConnectionPoolIdentity identity, SqlConnectionString connectionOptions, Object providerInfo, String newPassword, SqlConnection owningObject, Boolean redirectedUserInstance)
   at System.Data.SqlClient.SqlConnectionFactory.CreateConnection(DbConnectionOptions options, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningConnection)
   at System.Data.ProviderBase.DbConnectionFactory.CreatePooledConnection(DbConnection owningConnection, DbConnectionPool pool, DbConnectionOptions options)
   at System.Data.ProviderBase.DbConnectionPool.CreateObject(DbConnection owningObject)
   at System.Data.ProviderBase.DbConnectionPool.UserCreateRequest(DbConnection owningObject)
   at System.Data.ProviderBase.DbConnectionPool.GetConnection(DbConnection owningObject)
   at System.Data.ProviderBase.DbConnectionFactory.GetConnection(DbConnection owningConnection)
   at System.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory)
   at System.Data.SqlClient.SqlConnection.Open()
   at Microsoft.Rtc.Common.Data.DBCore.PerformSprocContextExecution(SprocContext sprocContext)]
Cause: Possible issues with back-end database.
Resolution:
Ensure the back-end is functioning correctly.
=================

Thanks Andrew.
may be i missed to create SRV records for the second FE server - Let me check this point and come back -- is it mandatory to create the SRV records for second FE server?
Are the clients using "Automatic Configuration"? Yes.
so web service need a hardware load balancer right?

Load balancing v/s Clustering with BOXI enterprise premium

We are planning to install Businessobjects enterprise premium on windows2008 server (64 bit) and we are going to use oracle database. my question is
"Can we set up Crystal reports and businessobjects (web intelligence) both either on clustered environment or load balancer ? "
If not, can you please let me know what is the best option ?

Oh. All BOE (this includes Crystal) servers support clustering (and software load balancing via corba). Only the input and output FRS do not support load balancing. i.e. while you can have mulitple input/output FRS, only one of each is active at a time. The others are passive and will only be used if the active FRS is unavailable.
As an aside, if I remember correctly, a BOE Premium license is required for clustering.
So, in essence, you do not need a hardware load balancer to support load balancing for both Crystal and Webi.

Does the Enterprise Edition provide load balancing?

Does the Enterprise Edition Application Server provide load balancing
and if so, how detailed?

Yes, it provides a fairly sophisticated load-balancer, which runs as a
plug-in to popular web servers. It supports sticky round-robin load
balancing, instance failure and recovery detection instance, cluster,
and application quiescence and multi-clusters.

Enterprise Deployment Guide/BigIP Load Balancer Question

In the Oracle Application Server Enterprise Deployment Guide, B13998-03, in appendix A, section A.2, it refers to using F5 software version 4.5, with a BigIP Application Switch. 4.5 seems a bit old. Has anyone used version 9.0.4 successfully?

You have to remember that the 9.0.4 release isn't that new either. However, you can basically use every load balancer out there if they support 1) Sticky/Persistent sessions and 2) Nat client.
You may also want to check this link:
http://www.oracle.com/technology/products/ias/hi_av/Tested_LBR_FW_SSLAccel.html
Regards,
Martin

How to enable Network load balancing for Enterprise portal

Hello,
We have installed EP 7.0 central instance(00) and dialog instance (01) and would like to enable network load balancing between these two EP servers.Have installed network balancer and the configuration has been done at network level.
The below URLs are being used for accessing the portal
Central instance :
http://CIhostname:50000/irj/portal
Dialog Instance:
http://DIhostname:50100/irj/portal
Both the port number has to be same for enabling load balancing.In order to acive this we have to map this port to http port by making some changes in Visual Administrator.
Can you please let me know step by step procedure or any link where i can find the same?
Appreciate your response
Thanks,
Vadi

Dear Jay,
Thnaks for your reply.
No...NLB will helpful in load balancing between different 2 different application (Ep)servers.
We are using microsoft network load balancer.Found the service http provider in VA for making those changes.
Any way thanks.
Regards,
Vadi

OBPM Enterprise Deployment on WLS - No Cluster, But Load Balanced

All,
Does anyone know of any gotchas when deploying BPM to WLS on 2 separate nodes, sharing the same directory, but not clustered. The system is load balanced based on F5. Basically we are talking a hot server/cold server deployment.
When we deploy projects, they default to the hot server even if the cold server is specified for deployment.
Anyone done this before?
TIA,
IGS

Hi,
Sorry, but I could not understand completely your architecture.
Are you talking about the Workspace (not clustered but load balanced). That's supported.
Or, are you trying to load balance the engine? (a single engine with 2 or more nodes)
If so.... I wouldn't recommend that you to do that.
Let me explain you why.
The engine uses the queue to balance the work among the different nodes. (that's why you have to configure a Distributed Queue and disable the server affinity in the connection factory).
Even more, the engine has some internal mechanism of synchronization among nodes so as to avoid some inter-node locking. If your engine nodes are not in a cluster, that mechanism will be disabled and the overall engine performance will be significantly degraded.
I'm not sure if I have answered your question. If not, please add more details of your configuration.
Hope this helps,
Ariel

Load Balancing Time Out Settings

Hi, getting error below and I'm sure its to do with Time Out on Load Balancing, anyone confirm as don't want to mess around with IIS...
The average of the most recent heartbeat intervals [499] for request [Ping] used by clients is less than or equal to [540].
Make sure that your firewall configuration is set to work correctly with Exchange ActiveSync and direct push technology. Specifically, make sure that your firewall is configured so that requests to Exchange ActiveSync do not expire before they have the opportunity
to be processed.
For more information about how to configure firewall settings when using Exchange ActiveSync, see Microsoft Knowledge Base article 905013, "Enterprise Firewall Configuration for Exchange ActiveSync Direct Push Technology" (http://go.microsoft.com/fwlink/?linkid=3052&kbid=905013).
Currently timeout is set to 5mins on LB...
Thanks!

I'm talking about Health Check Time Values below;
http://blogs.vmware.com/vsphere/2012/11/load-balancing-using-vcloud-networking-and-security-5-1-edge.html
Parameter
Description
Interval
Interval at which a server is pinged.
Timeout
Time within which a response from the server must be received.
Health Threshold
Number of consecutive successful health checks before a server is declared operational.
Unhealth Threshold
Number of consecutive unsuccessful health checks before a server is declared dead.

BPEL End Point URL using External Load Balancer URL

Hi All,
We have Oracle SOA Suite installed in a clustered environment as per the Enterprise Deployment Guide 10g Release 310.1.3.3.0 E10294-02.
I have deployed a BPEL process to the clustered environment and the end point refers to the internal url of the load balancer e.g. http://internallink:8001/orabpel/default/testService/1.0
When we just paste this end point in a browser, enter the parameters and click on invoke, the BPEL Process gets invoked.
However, if we try to use the external url(which is on https) of the load balancer as the enpoint url eg https://externallink/orabpel/default/testService/1.0 to invoke the same BPEL process, the page which is used to accept the parameters and the used to invoke the BPEL process is successfully displayed. However, when we try to invoke the service, the connection times out.
Please note that internallink and externallink are the internal and external VIPs, respectively.
Does someone have an idea of what may be wrong or what needs to be corrected to be able to invoke the BPEL process using the external VIP, please?
Thanks in advance.

Check if the port of ESB in your server is open.
I think that the port is: 7777
try from ESB server:
wget WSDLURI
if you got the file then the port is closed.

Request failover between Load Balancer and OAS 10.1.3.3

Hello,
I have a Load Balancer hardware "Cisco 11500 content service"
Working on 4 applications server OAS 10.1.3.3 on the oracle enterprise lunix
We are using Oracle HTTP Server And deployed application Under (j2ee) I am using Cluster between them "instant” as the same on all 4 servers
If an OC4J process goes down between requests, then this module is able to hide that failure from the end user by transparently routing the next request to another OC4J that is available within the same group of JVM.
BUT when I shutdown the opmn the Load Balancer Hardware is still sending that requests to the opmn that is already down
How can I configure or fix that request that is common to that opmn stopped process
Do you have the solution to solve this issue?
Thanks.
Regards.
Moataz

Dear All,
Will appreciate if someone can answer this. Please let me know.........
Regards
Moataz Alem

CF 10 Load-Balancing with Remote Instances

I was reading an article on Clustering/LB/HA using CF8, but have not found any updates for CF10.
Using VM VirtualBox to setup a few virtual servers, I am looking to setup a load balancing of ColdFusion 10 on 2 remote instances. The goal would be have ColdFusion Cluster Manager be able to point http request to one of the two servers based on load/availability. Not really having a hardware cluster/failover setup, just managing resources on two CF instances instead of a standalone.
The servers are Windows Server 2008 R2 with IIS7.5 and ColdFusion 10 Enterprise on installed on 3 of these machines. Let's call them CF-LBManager, CF-Web1, and CF-Web 2. In the CF Docs, they show the Cluster Manager adding the local CF instance and "if you want" a remote instance. However, this scenario would require the main instance to be running and not fail for it to direct to the other instance.
I am trying to set this up now with CF-LBManager as just a manager of the requests coming in. In the Enterprise Manager >> Instance Manager, the local instance is shown and I add the two remote instances with the correct Remote Port, JVM Route, etc. I also made sure the <Cluster>...</Cluster> block was added to the two remote instances (CF-Web1 and CF-Web2) \runtime\conf\server.xml file too, Jetty Services also is running. Now under the Enterprise Manager >> Cluster Manager I add the two remote instances to the cluster, not the local instance on CF-LBManager with Multicast Port and Sticky Sessions enabled. On Submit, I get a green message "You must restart all the server instances and any configured webservers for these changes to take effect.". I go ahead and reboot the servers and come back.
I now browse to the ColdFusion page as a test on CF-Web1 and CF-Web2 to make sure CF is running properly, they do. I then browse the IP of the CF-LBManager, however it only returns the local IIS web site and not redirect to one of the two cluster members. I am not seeing any message on the coldfusion-out.log on the remote instances. Am I not setting this up correctly or not enabling the Cluster Manager to take over and pass along the requests to those in the cluster?

Unfortunatley I don't have a lot of experience with CF10 on Windows, but if you are running CF behind IIS I think you will need to update the Tomcat connector configuraiton to do load balancing. I'm not sure if re-running the wsconfig tool on all of the servers will do this or not, but that is what I would suggest trying first. If that doesn't work you will need to update the Tomcat connector configuraiton manually. You can find more information on load balancing with the Tomcat connector here: http://tomcat.apache.org/connectors-doc/generic_howto/loadbalancers.html.

Enterprise Load Balancer

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