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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SQL Server AlwaysOn Error_number 35206

I've joined a Ecommerce business where they use SQL Server 2012 AlwaysOn for HADR and this is the first time I've come across supporting this technology. The Sql Server log on both nodes gets ...
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128 views

SQL Server 2008 mirroring migration to SQL Server 2012 always on

Quick question, request your input. I am migrating a SQL Server 2008 R2 instance with database mirroring to SQL Server 2012 with always on. Should I : Restore the SQL Server 2008 R2 backup to SQL ...
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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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54 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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300 views

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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319 views

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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17 views

Remove Cluster Nodes after Cluster Object was deleted

While building new 2012 servers to move to we had some change in requirements. We are using Availability Groups on the new servers. Here's where we started. Servers: Serv1a Serv1b Serv2a Serv2b ...
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1answer
171 views

Connection AlwaysOn AG Listener Problem

I'm a newbie for microsoft technologies and I'm having problems in connectivity part for SQL Server 2014. This is probably an easy issue but I'm stuck. I've 4 servers. One of them is the Active ...
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1answer
41 views

AlwaysOn AG and Cross-Database/Server Transactions

We're about to move from SQL Server 2008 R2 Standard to SQL Server 2012 Enterprise and are reviewing or HA as part of process. Right now we use DPM and log shipping every 15 mins. Our MS partner is ...
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1answer
128 views

Failover Cluster and AlwaysOn Availability Groups across Data Centers

We have two 3 node clusters in separate data centers, let's call them ClusterP and ClusterS. ClusterP is our primary and ClusterS is our secondary for disaster recovery. Each cluster has multiple ...
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SQL Server Agent Jobs and Availability Groups

I'm looking for best practice in dealing with scheduled SQL Server Agent jobs in SQL Server 2012 availability groups. Maybe I missed something, however at the current state I feel that SQL Server ...
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54 views

Persistent Data Collector Collection_Set_3_Upload Job Failure with AlwaysOn Groups Enabled

I have a two node SQL 2012 AlwaysOn HADR cluster (v11.0.3412) with 3 availability groups configured. The AG groups are set to synchronous mode and the secondary is not readable (we do not want the ...
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5answers
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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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1answer
85 views

Availability mode - manual failover mode, best practice for availability mode?

We don't want automatic failover for our availability group, but I have set availability mode to Synchronous, was that a mistake? The availability group runs on vmware with windows 2012R2, and I got ...
2
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1answer
178 views

AlwaysOn Availability Group Automatic Failover does not work

Playing with AG setup I have the WSFC up and configured with two nodes in one availability group called DevClusterOnline. Both nodes (DEV-AWEB5 primary, DEV-AWEB6 secondary) are running Windows Server ...
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82 views

AlwaysOn Availability Group: Users on Secondary Server

We have an AlwaysOn Availability Group setup (DB1+DB2) and also a web server (Web1) outside of the domain that we need to connect to the AG using Windows Authentication. The following Windows ...
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58 views

Min no. of replicas to set up SQL Server Always ON over a Failover Cluster on a Windows Cluster

AO: Always ON FCI: Failover Cluster Instance WSFC: Windows Server Failover Cluster I'm scratching the surface of AO. I currently have one SQL 2012 FCI on a WSFC. Which means one Active node at a ...
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1answer
79 views

Oldest unsent transaction alert for Availability Group

In SQL Server 2008 when using database mirroring, it was possible to set up alerts when the oldest unsent transaction exceeded a certain threshold. We could check the state of any database mirroring ...
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1answer
53 views

How Automatic Failover Works (AlwaysOn)

I'm going to use AlwaysOn technology on my servers, but it's some unclear points in the documentation: Automatic failover looks like Primary replica (A) unaccessable Secondary replica (B) becomes ...
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Object Auditing with Availability Groups

We are about to implement Availability Groups and it brought up a question. We currently use auditing to see which objects are no longer used in production. We also take a backup each night to use ...
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1answer
47 views

Zombie Sql Server DB on Secondary Replica is both in and out of an Availability Group

I have a database in Sql Server 2012 that is on the secondary replica of an availability group. I removed the database from the AG db list on the primary and the db is currently in the Restoring ...
2
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1answer
103 views

AlwaysOn Availability Group Forced Failover

May I request your input. I setup SQL 2012 with always on availability group for my databases in sync and secondary readable mode. I completed failover tests with sync mode and it is functioning as ...
2
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1answer
51 views

How can I automatically have a node become primary in an Availability Group?

In my environment, I have Db01 and Db02 setup with SQL 2012 AlwaysOn. Db01 is the preferred master as that is where all of the backup jobs reside. Typically, the only time that Db01 is unavailable is ...
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84 views

SQL Server 2012 Always On, during a massive DB change

As the topic says, I was wondering if you guys have any advice on potential issues with Always On availability during a massive update? We're in need of making several massive datamodel changes, ...
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1answer
44 views

Backups in Availability Groups

In case of async commit setup and the backup preference set to secondary replica. I have observed, in case of high unsent log size, log backup on secondary replica starts failing for that database ...
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94 views

Can not ping Always On listener from outside primary node

I just setup SQL Server 2012 (on Windows Server 2012) Always On feature and have a problem with connecting to SQL Server Listener from non-primary node (it works from primary node though). Here is ...
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140 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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1answer
128 views

Different results from sys.dm_db_file_space_usage with database prefix

To make it simple: According to MSDN (link) among other sources, you can get the amount of current free space in tempdb by using the following bit of TSQL: -- MSDN version SELECT ...
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2answers
420 views

Can CDC or Change Tracking be against a read only secondary?

We will be deploying SQL Server 2012 Availability Groups with read only secondaries and would like to execute our SSIS extracts against the secondary while utilizing CDC or change tracking (the ...
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1answer
2k views

Trouble Creating AG Listener: The WSFC Cluster could not bring the Network Name resource

We are trying to create an AG Listener and it errors out on us: It does however seem to create both the DNS entries and the virtual computer object in AD. However, because of this error message SQL ...
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1answer
4k views

Do Availability Groups support Active/Passive?

I am looking into the licensing of SQL Server 2012 when using Availability Groups with 2 servers. It is not clear to me if Availability Groups are only available as Active/Active and not ...
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1answer
354 views

Availability Group configuration & licencing

I am about to setup a 3 node AV group for SQL Server 2012 my configuration will be - London-Srv1 - PRIMARY Core Database (OLTP) set to READ_WRITE London-Srv2 - SECONDARY PASSIVE synchronous Core ...
7
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1answer
1k views

Can Availability Groups provide seamless failover (with no query failures)?

I have been testing the Availability Groups feature in SQL Server 2012 and am finding that there is approximately 15 seconds of down time when the primary server fails over to the secondary server. ...
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1answer
940 views

Availability Group reporting disconnected replica [closed]

I'm trying to configure availability groups in a VM environment so I can run some tests. I think I've got the group created correctly, I can see the Always on group on both servers. However when I ...
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153 views

Preferred node for read on Availability Group in a multisite configuration

We are going to set up a multi (at least 2) site configuration, and we want to achieve both HA as well as a good resource usage. The sites will be interconnected through a high speed, dedicated ...
5
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1answer
478 views

Cross Database transactions with Availability Groups

Recently we are working on a POC to get Always on work and happened to see this article in BOL http://technet.microsoft.com/en-us/library/ms366279.aspx This article suggests that there would be ...
4
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1answer
965 views

How to link users and logins in an Availability Group?

I've got an Availability Group going and need to map some logins to database users on an active secondary replica. (Node2) Unfortunately, when I try to exec sp_change_users_login or alter user with ...
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2answers
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Logins aren't syncing across Availability Groups

We have 2 servers in an AlwaysOn group. While the user accounts within each synchronized database exist on both servers, the database instance level logins only exist on one of the servers. Ie ...
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2answers
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How do Availability Groups work with cheduled jobs and SSIS packages?

I have 2 SQL Servers set up with a database in an AlwaysOn Availability Group. I also have jobs set up which run against the database. During a failover how do I ensure the jobs will continue to run ...
5
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1answer
441 views

Recovery time effects of Availability Groups

We did different kinds of basic Tests and AlwaysOn passed in many tests. We finally did a heavy write test for AlwaysOn and it gave surprising results. The actual Test details are here, the goal is ...
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130 views

Availability Groups and Partition Swapping

Is it possible to use SQL 2012 Availability Groups over two machines and perform partition swapping on the primary machine ?
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214 views

SSIS SQL Server 2012 cluster Availibility Group [closed]

We have a three server cluster using AlwaysOn technology, and have created an Availability Group for the SSISDB catalog. How would you change the code to only execute on the primary server?
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1answer
483 views

Enable TDE for existing AlwaysOn databases

I need to do a little benchmarking of AlwaysOn, both with and without TDE enabled. All the instructions I see cover adding encrypted databases to an availability group, but I see no mention of ...
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when can AG primary replica be a different host to WFC primary?

To set up an Availability Group with two servers, the servers both participate in a Windows Failover Cluster. I've seen cases after certain failover modes where the primary IP address in the cluster ...
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1answer
433 views

Are there problems with using SQL Server AlwaysOn Availability Groups with Windows 2008R2?

[Cross post from StackOverflow] Brent Ozar published this webcast (slides, video with free registration) entitled "Real-Life SQL Server 2012: AlwaysOn Lessons Learned", in which he repeatedly states, ...
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698 views

SQL Server 2012, Network for: AlwaysOn Availability Group with AlwaysOn AlwaysOn Failover Cluster Instances

Setup: I have two data centers. In site1, my primary site, I'd like to deploy an AlwaysOn Failover Cluster Instance (FCI). In site2, my data recovery site, I'd like to deploy a single-node instance of ...
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1answer
1k views

Difference between accessing SQL Server by instance name and cluster name [closed]

I have installed failover clustering feature on two servers with Windows Server 2012 and then I installed SQL Server 2012 on both of them. I also enabled SQL Server 2012 AlwaysOn feature. Now I can ...
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2answers
404 views

Databases outside of AlwaysOn availability group stuck in RESTORING status

I am testing the AlwaysOn feature of SQL Server 2012. I have 2 servers set up and can successfully create availability groups and fail them over between servers. However, any databases that DO NOT ...
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1answer
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Transaction Log Maintanance While Using AlwaysOn Availability Group

We are using HADR ( AlwaysOn Availability Group) feature of SQL Server 2012. Server and AG Configuration as below: SQL12_SRV1 --> AG1(PRIMARY) - SYNC -->> DBTest SQL12_SRV2 --> AG1(SECONDARY) ...
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Mysterious missing transactional replication tokens

I am looking at implementing Transactional Replication subscriptions in an AlwaysOn AvailabilityGroup. I tried to use this as a guide: ...