DB Engine :: Availability Group State Change Automatically?

Sep 11, 2015

I found one database in availability group state change automatically. I found ERR started at

0000233c.00002848::2015/09/11-03:51:09.840 ERR   [RES] SQL Server Availability Group: [hadrag] ODBC Error: [HYT00] [Microsoft][SQL Server Native Client 11.0]Query timeout expired (0)

And I use google to search and found the link below. It indicated a network issue. Is it the source of the problem. By the way, My failure Condition Level is 1 and I have increased Health Check Timeout from 30,000ms to 150,000ms just now. [URL] ...

--- SQLDIAG ---

cluster log in UTC+8:

0000233c.00002848::2015/09/11-03:51:09.840 INFO  [RES] SQL Server Availability Group: [hadrag] SQLMoreResults() returns -1 with following information
0000233c.00002848::2015/09/11-03:51:09.840 ERR   [RES] SQL Server Availability Group: [hadrag] ODBC Error: [HYT00] [Microsoft][SQL Server Native Client 11.0]Query timeout expired (0)

[Code] ...

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SQL Server 2012 :: Automatically Adding New Databases To Availability Group

Oct 28, 2013

automatically replicates new databases to Availability Group partners - if you do a little prep work on your environment first.To make it work:

1) Create linked servers on all group members pointing to all other servers in the group, with names matching the hostnames they represent.
2) Ensure suitable credentials (or 'current context' impersonation) for linked servers. Also: Enable RPC and RPC OUT
3) Run the DDL code below.
4) Schedule hadr_replicate_queue on [master] to run as often as you want initial syncs to occur. Every 5-10 minutes is plenty for most purposes.
5) Connect to an availability group listener and call CREATE DATABASE :)

I use a slightly more extended version of this code at home to do things like permissions synchronization across replicas - I essentially allow applications to install direct to an availability group replica and then have all the relevant objects replicate to other nodes. I don't really like going through manually and doing things, even though there's an AddIn from SQLSkills for management studio - it still requires manual intervention.

The main use I have for this at home is that I'm using the Azure pack, and want to automatically ensure that my newly created 'SQL Server Cloud' databases are highly available, plus it means when I install a non-alwayson aware product it doesn't require any extra work afterwards to allow failover to another machine.

* AlwaysOn Self-Population Script
* By: Steve Gray / steve@mostlyharmful.net
* Usage: Free, but buy me a beer if you're ever in Brisbane.
**/
USE [master]
GO
IF EXISTS (SELECT * FROM sys.tables WHERE name='hadr_pending_replicate')

[code]....

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Nov 20, 2015

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Hi, please I would like to use something like this>

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Sep 11, 2015

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Sep 14, 2015

I am planning to have AlwaysON Availability Groups setup between Server 1 and Server 2

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Aug 6, 2015

Proposed configuration:

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Nov 2, 2015

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Sep 12, 2014

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Nov 9, 2015

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I have removed one of the database from availability group by mistake. Luckily I am still operational with primary server.  database on secondary servers are on restoring mode.

I have done full backup of database from primary (prod) server and restored on secondary servers with no recovery when I add database into availability group I get an error message log missing what is the best method to achieve and add database again into availability group.

Note I cannot restore database on primary server as it is on production

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Nov 18, 2015

We ran into weird/interesting issue with below details.

Version: Microsoft SQL Server 2012 (SP1) - 11.0.3000.0 (X64) Standard Edition (64-bit) on Windows NT 6.2 <X64> (Build 9200):

We are using SQLCMD to run DDL script on our product database in below order. That script has below content.

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When we execute all above 3 steps in single script using SQLCMD on our test_server#1 , it is successful but when same is being implemented on test_ server#2 , it is failing.We ensured that there is no other user accessing the db and setting on both the server are all default/basic. Separating out all 3 steps in 3 different script working fine. This is only problem when we combine them into single script and fire it using SQLCMD. If it is something related to session/transaction then we should hit same issue on our test_server#1 server as well but that is not the case.test_server#1 and test_server#2 has exact same database/data, just two different physical machine & SQL Server instance.

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Jul 29, 2014

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The options I seem to have are to either remove the database and then re-add it, in which case this affects all secondary replicas, or to remove the secondary replica and add it, in which case all the DBs are added.

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I would also like non SQL clients to be able to connect to the server currently hosting the database so that they can run scripts sitting in a share. I don't have a shared disk so just have a directory share on each server with the same scripts in each directory.

I am able to ping and RDP to the listener IP address/name and end up on the correct server but am unable to connect to the share ListenerNameShare. Is that actually supported? If it is, any thoughts on what I need to do to get it going. If it isn't what other options do I have?

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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 is running on patch level 11.0.5058.0 with 2 synchronous replica(on different SANS) in Primary Data center and 1 ASYNC replica in DR. Migration has been a non-issue because none of the databases weren't substantial enough that I could not fit into my maintenance window which is 12-4AM on SAT morning.

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The restore to the primary replica is instant because of seeding incremental but the issue comes from having to backup the database before adding to the availability group. 4 hours is my exact outage window and I can't get any more. My plan to migrate application is to -

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Week Later
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Jul 21, 2014

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Jul 23, 2014

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Jul 3, 2015

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