Availability Groups are a new feature of SQL Server 2012 that provide continuous data synchronization, automatic failover and secondary read access for one or many SQL Server databases.

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SSMS Registered Servers with ReadOnly Application Intent

We are working on SQL Server 2014 POC testing with AlwaysOn and one of the user asked about saving the configuration of SSMS with ReadOnly Intent using the registered servers in Local server group. ...
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Alwayson Database Recovery Failure during TDE encryption

Last week I enabled TDE encryption on my AlwaysOn Availability Group databases of SQL Server 2012. During the encryption of one of the larger databases, bigDB (~200gb) a failover event occurred. Of ...
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71 views

AlwaysOn AG - CPU limitations

I’ve been trying to find out if the same CPU limitations database mirroring has apply to Availability Groups. My guess is that the same limitations exists, given that Availability Groups was built on ...
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412 views

Fastest way to migrate database to AlwaysOn cluster

I want to make the fastest migration plan to move a SQL Server database in simple recovery from a standalone server (SQL 2005) to a two node AlwaysOn cluster in full recovery. Some databases are ...
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260 views

AlwaysOn Availability Groups go to Resolving status

We have a two-node cluster set up running SQL Server 2012 on Windows Server 2012 R2. The base cluster consists of only those two nodes. The quorum is set up as node + disk majority, with a shared ...
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SQL AlwaysOn Availability 2 synchronous nodes on either side of an asynchronous link

Say we have two datacentres, DC-A and DC-B. Say in each DC, there are two SQL servers. DC-A has SQL-A1 and SQL-A2 and DC-B has SQL-B1 and SQL-B2. Is it possible to have SQL with an AlwaysOn ...
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How to query readonly replica in Always On cluster

We have an Always On "cluster" that consists of 2 servers (there will be more), so one is PRIMARY and other(s) is(are) SECONDARY. The idea was to dedicate SECONDARY as a readonly replica, so it would ...
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Manual Failover with AlwaysOn availability group

We are planning to upgrade our SQL 2012 to SQL 2014. We currently use a mirror for our production databases but are planning to move to availability groups. We are going to be running 2 SQL Servers on ...
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74 views

SQL Server Availability Group Design Question/RFC

We are in the early stages of planning an upgrade/redesign of our SQL environment and I am seeking advice/feedback. The scenario: Current SQL Server 2008R2 EE on Windows Server 2008 R2, blade ...
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Check the data latency between two Always On Availability Group servers in ASYNC mode

I have implemented Always on Availability Group in asynchronous mode between two servers primary and secondary. When i tried to check the data latency between the servers in performance monitor ...
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37 views

Restoring a Database in an Availability Group

I located an extremely helpful process outlined in the thread below, but needed some clarification. This may be a silly question, but I'm a bit new to Availability Groups. In the steps outlined in the ...
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SQL Cluster, AlwaysOn AG, or Something Else? [closed]

I really needs some help with Setting up SQL servers. We are re-configuring our network and have no clue how to resolve our SQL issue. My Network Admin. wants an "Active/Active" with shared storage ...
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SQL Server 2012 AlwaysOn: need to automatically add databases by script- T-sql or PowerShell

I've installed and successfully configured our SQL Server 2012 AlwaysOn 2-node servers for our new "Intranet" that is coming out. I've gotten AlwaysOn working great, and our Front End servers for the ...
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SQL Server Management Studio with Multi subnet HADR cluster

We are starting to deploy Multi-Subnet HADR AlwaysOn clusters for our environment. Using MultiSubnetFailover=True in application connection strings works. However, SSMS connections require manual ...
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1answer
71 views

Availability Group: ReadIntent connection failing

I have two nodes configured in an AG group in a dev domain: node1.DevDomain.com node2.DevDomain.com My own workstation is on our production domain: MyMachine.ProdDomain.com When I test ...
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High Availability Error “An error occurred while receiving data: '10054(An existing connection was forcibly closed by the remote host.)'.”

I have trouble in configuring High Availability, I searched a lot but I was unsuccessful in fixing it. I got this error : "An error occurred while receiving data: '10054(An existing connection ...
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35 views

Migrating VLDB to AlwaysON AG

I have been using AlwaysON AG for a long time now and currently have about 10TB of data across 120 databases and 3 AG groups for any application that is on SQL 2012 with great success. Each AG group ...
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Sleeping queries blocking rebuild index and update statistics job in Always on

At one of your client sides we have configured Always on with synchronous mode.Also we have schedule rebuild index and update statistics job which runs in night every alternate day. the issue is ...
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58 views

Syncing Uncontained Objects with AlwaysOn Availability Groups

In setting up our HA environment (AlwaysOn AG), I came across the add-in ssms_2012_ag_addin_setup.exe that I got from SQLSkills. ...
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How AlwaysOn Availability Group secondary replica catches up with primary after secondary server long downtime

Can someone point me to the MS article or blog post that explains in details how AlwaysOn Availability Group secondary replica catches up with primary after secondary server long downtime? I did ...
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55 views

AlwaysOn with TDE

Recently, I setup an availability group with 3 nodes. The 2 synchronous nodes are on the same domain, "domain 1". The third asynchronous (DR) node is on a different domain, "domain 2". I have a new ...
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1answer
84 views

ApplicationIntent=ReadOnly Traffic when no Readable Secondary Available

We have a SQL 2012 AlwaysOn Availibility Group with 2 nodes. We have synchronous commit between the 2 replicas. They are both set to accept ReadOnly connections when acting as secondaries and to ...
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1answer
348 views

Restoring a SQL Server 2012 database in high availability

I have a database which is in always-on high availability mode synchronized with another database on a different instance. How can I restore from a .bak file into the primary database using T-SQL? ...
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Change Data Capture for Asynchronous Secondary Replica

MSDN states the following in Active Secondaries: Readable Secondary Replicas (AlwaysOn Availability Groups) for SQL Server 2014: Limitations and Restrictions: Change tracking and change data ...
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What is the appropriate value for DBCC CLEANTABLE batch size?

I have removed to NVARCHAR(MAX) columns from a table and what to calculated how exactly the table size was reduced. Usually, I am rebuilding the clustered indexes but the table has more then 1.6 ...
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430 views

Multiple named Instances with Always On

We have a two-node multi-subnet Windows Server 2012 R2 cluster in two regions. We have three named SQL Server 2012 standalone instances on each node and are in the process of setting up Always On ...
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AlwaysOn SQL Agent Jobs [duplicate]

We are running AlwaysOn on three replicas. The primary and first secondary are synchronous for failover purposes. The second secondary is a read-only asynchronous server for reporting. The only thing ...
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264 views

Listener pointing to incorrect AlwaysOn Availability Group

All, Thanks in advance I have two instances of SQL Server 2012 SP1 on a three node WSFC with a HAdr group on each instance with a corresponding listener. Instance 1's listener points to Instance 1, ...
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How to modify an existing AlwaysOn Availability Group IP

I have an unusual question regarding AlwaysOn Availability Group configuration. I have built out an AOAG cluster on a VM. The build out did not use a Heartbeat network as I had originally requested ...
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58 views

delete WSFC 2012 cluster role/group fails

PS C:\Windows\system32> get-cluster Name ---- sql2012poc_cl1 PS C:\Windows\system32> get-clustergroup Name OwnerNode State ...
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“Skipping the default startup of database” SQL notification for AlwaysOn Cluster

So I set up our SQL servers to notify us of alerts at severity 17 or higher (as advised by various SQL Server articles). I've done this to each node of a SQL Server Always On Availability Cluster, ...
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104 views

SQL Server - Log Shipping Into an AlwaysOn Availability Group

I have a requirement to build an AlwaysOn Availability Group, which I have done. Now the user wants me to set up log shipping from another server into the AlwaysOn Availability Group. I’m not sure ...
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22 views

Find out CPU usage by reporting server

Is there a way to found out what is the CPU usage of the reporting server? Sometimes the CPU usage is rised up by 40% percent for several seconds. I think the reporting server is causing it but I am ...
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83 views

SQL Server AlwaysOn to run updates and schema changes in 24/7 environment

First of all i have to say that this question comes from a software engineer-perspective. Unfortunately we have no DBA so we need to administer our own databases. We have SQL Server 2012 Enterprise ...
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204 views

SQL AlwaysOn Failover Due to Missed Heartbeats

I have setup SQL AlwaysOn between primary and DR data centers. Here is the setup: Primary data center: Server1 (Primary), Server2 (Sync Commit Secondary), Server3 (ASync Commit Secondary) DR data ...
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60 views

Wait for an AlwaysOn replica to be synchronized in Powershell

I am working on a disaster recovery script. One part of it is not being consistent. This is the code: ... ## Switch replica to Synchronous Set-SqlAvailabilityReplica -AvailabilityMode ...
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238 views

AlwaysOn Availability Groups log_send_rate

On all our AlwaysOn setups, running Windows 2012 and SQL Server 2012 in virtual machines and on bare-metal, I find that the log_send_rate in sys.dm_hadr_database_replica_states is consistently ...
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142 views

Can AlwaysOn cross domains?

Is SQL Server 2014 capable of having AlwaysOn set up across multiple domains? If not, is there a third party tool you can recommend to mirror a 13TB (and growing) database across domains? Thanks in ...
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369 views

AlwaysOn Availability Groups Delayed Replica

With AO SQL 2012, is it possible to configure one of the member as delayed replica? I know ideally we would like this to be synced but in case of human error, it would give us the ability to check on ...
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How to make distributor highly available in Always On Configuration

We have clients requested us to configure Always on with Replication. Microsoft does not support it. "The distributor should not be a host for any of the current (or intended) replicas of the ...
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Moving a SQL Server TempDB of AlwaysOn members [closed]

We have two SQL Server instances on Azure Windows virtual machines. Always on availability group is configured between them. We need to move TempDB on both instances, is there a risk that something ...
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What happens in this strange SQL Server Mirroring situation?

Let's assume that two SQL Server instances (S1 and S2) are in synchronous mirroring or in a synchronous Availability Group. Now the following happens: A write happens on S1 and transaction commit is ...
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Availability Groups, Log File Backups and Recovering the Secondary

I am currently working on ironing out some kinks in a testing setup for our large (1.5TB+) database in an Availability group and have a few things I need some help with. Setup I have a two node ...
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1answer
169 views

Changing feature on a database that is a member of SQL Server AlwaysOn availability group

Our developers need a change on a database that is in the Availability group (they need Service broker in one of the databases to be enabled) but when I try to do it I am getting error saying that I ...
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AlwaysON : Log_Send_Queue_Size is increasing but the log_send_rate keeps decreasing?

Question Why, despite the increasingly log_send_queue_size for these two databases, did the log_send_rate keep decreasing? There were no bandwidth issues on the network at this time, and no other ...
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SQL Server 2012 always-on backup, full vs copy-only

I need a quick clarification on copy-only backup vs full backup as it pertains to transaction log numbering and restore if required. I have SQL Server 2012 setup with always on for multiple ...
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How to test a SQL Server 2012 Cryptographic Provider

One of the nodes in my SQL Server 2012 availability group has been having problems with an external cryptographic provider. It's current separate from the rest of the availability group and can't be ...
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280 views

Is there a way to minimally log insert under Always on?

I have a primary database in FULL recovery mode which is part of Always On group. Is there a way to minimally log insert operation under FULL recovery model? I have a process that is executed each ...
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Adding a distributor for availability groups

According to this MSDN article, I need to add a distributor. http://msdn.microsoft.com/en-us/library/hh710046(v=sql.110).aspx I'm confused by this particular statement: The distributor should not be ...