SQL 2012 :: How To Configure Database Mirroring
Sep 24, 2014
I am trying to configure database mirroring with sql server 2012.
My principal instance and my mirror instance are on different server.
Both SQL Server service run with NT SERVICEMSSQLSERVER.
Now when I am configuring database mirroring, which service account should I use ? database account or server account ?
Instead of using domain account, can I :
1- create local account on my two server
2- Add these 2 logins in my 2 instances.
3- use these local account for configuring database mirroring.
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Jul 7, 2006
To configure database mirroring
After connecting to the principal server instance, in Object Explorer, click the server name to expand the server tree.
Expand Databases, and select the database to be mirrored.
Right-click the database, select Tasks, and then click Mirror. This opens the Mirroring page of the Database Properties dialog box.
To begin configuring mirroring, click the Configure Security button to launch the Configure Database Mirroring Security Wizard.
but i do not see any "Mirror" Option in the "Tasks" menu.
Why ?
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Aug 28, 2007
Apart from SQL Server Management Studio's "configure security" button on the database mirroring tab of the database properties dialog - are there any other tools or scripts that can be used to configure mirroring?
If I can't find one, I'd like to write a script / tool that:
0. paramterizes all the variables involved in database mirroring
a. configures connections to the primary and mirrored SQL Servers
b. does the backup / restore between servers
c. configures endpoints / security
d. checks possible pitfalls (can't connect, firewall, etc.)
e. starts mirroring
f. does all the above for a list of the databases I'd like to mirror (anywhere from 6 to 30 databases)
SSMS wizards get me through most the above - it's just tiresome to repeat for each database.
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Dec 2, 2014
I have just finished configuring my first test mirrored environment (High safety mode). I setup the database engine service accounts on each of the servers with domainuser. I inherited a production mirrored environment set up by someone else. On the production servers the database engine service account is NT Authorityuser a local account. I am trying to practice installing Windows updates within a mirrored environment and I not sure how to proceed when the service account is NT Authority user account. should I change the service account to a domainuser?
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Jan 24, 2015
I have created a new login in principle server and provided dbowner permission to principle db.
How do I transfer this login to mirror server and assign the same permission to mirror dd?
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May 13, 2015
I've read here at [URL] that with 32 bit it's recommended to only have 10 database mirrors per instance. However, is there a limit for 64 bit SQL Server 2012?
We're having a problem where we have about 300+ databases and now any new db's we add are timing out when it comes to setting up mirroring and am wondering if this is limited by the instance.
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Oct 24, 2015
missing witness server information and the fail-over is broken suddenly? 4:00am no maintenance job. I have one sql job on 10pm for backup on database transaction log only.
I can see the primary have problem then perform fail-over to mirror database, the auto fail-over was broken.
I re-build the sql mirror is OK , but i want to find the root cause.
Windows application event was full when there have many failed event, i have increase log size for application event.
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May 3, 2008
Server A = primary SQL DBs (mirroring origination)
Server B = failover SQL DBs (mirroring destination)
For database mirroring a witness is required.
Can the witness live in another instance of SQL on server B?
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Oct 12, 2015
Using SQL Server 2008, we would like propose mirroring between two servers of a critical database. Since we initiate, may require to clarify on its purpose and also required changes from application end.Any changes required from OS Level? (I believe both servers IP or Host name should be added in host entries. Mirroring ports should be allowed/open including Principal and mirror server IP Addresses): Windows Team.Any changes required from Application? (Instance name, authentication: user name and its password should be added in web config files): Application Team.Any changes required from Network Team?Also for mirroring both the principal and mirror servers should be with same version, does it only mean SQL Server 2008 versions are enough or does it also mean to say build numbers 10.00.4000 should also be same.URL....
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Dec 15, 2014
We are planning to setup HA using either AAG or FC. ON my production environment (P), I have transnational replication configured for 2 of databases out of three. These data get replicated to another server( C1) hosted on cloud, with local distributor at P.
If I configure AAG/ FCI , how do I handle failover?I wanted to setup P as primary AAG with two replicas as S1 and S2. P->S1 will be synchronous while P->S2 will be asynchronous.Incase my P goes down how the replication will failover S1? Incase P and S1 goes down how do I failover to S2 with the replication.
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May 8, 2014
We have a SQL 2012 server instance that has log shipping set up to another SQL 2012 server to provide a warm standby for a forward facing application. The databases on the primary server occasionally are required to be backed up and restored to a development environment, completely different server. Is there a way to schedule full backups with log shipping enabled?
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Jul 29, 2015
How to configure AlwaysOn between two different network section?
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Jan 21, 2015
I wanted to schedule the transaction replication. How do I do it? Currently I have set up a transaction replication which runs continuously and synchronizes the changes with immediate effect.
I need to configure a replication which will gather logs from the publication once in a day.
Is there any possibility?
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Jun 12, 2015
We have 15-20 report server environments including Dev/SIT/UAT/PROD/DR etc. so instead of configuring it on each servers, we would like a script to use with parameters.
After installing the SSRS 2012 package on each server with given instance and service account, I would like to configure the SSRS through script instead on running the Configuration manager RSConfigTool.exe manually.
we already have created the database beforehand using the scripts provided by WMI. do we need db_owner permission on msdb and master database to configure SSRS?
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Oct 26, 2012
I created a mirrored DB, added a new datafile to the principal using a path the mirror can't access. As a result the mirroring session was suspended because the mirror stated: "CREATE FILE encountered operating system error 3(The system cannot find the path specified.) while attempting to open or create the physical file".
Fine, so I disabled mirroring on the principal (SET PARTNER OFF) which worked just fine, but the mirror stayed in a mirrored state, Object Explorer saying:"(Mirror, Disconnected / In Recovery). Sooo, I tried to disable db mirroring on the mirror using ALTER DATABASE db SET PARTNER OFF;, which completed successfully, but the DB STILL remained in a mirrored-configuration.
I tried ALTER DATABASE db SET PARTNER FORCE_SERVICE_ALLOW_DATA_LOSS which resulted in
"Msg 1404, Level 16, State 4, Line 1
The command failed because the database mirror is busy. Reissue the command later."
I tried taking the DB offline or restoring it from a backup, but all these operations resulted in "The operation cannot be performed on database "db" because it is involved in a database mirroring session or an availability group."
The only solution I can think of at the moment is shutting down the instance and deleting the data and log-files of the mirrored db, which would be just fine because this is just a test installation, but it would be not quite as easy in a productive environment.
Is there any other way to remove the mirrored state from a disconnected mirror or to simply get rid of the db entirely to perform a recovery?
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Oct 29, 2015
I am setting up mirroring on one of our live databases tonight. The database is quite big, around 300GB.
At the moment we are doing log backups once a day and full backups every night.
My question is, when I set up the mirror, will the log backups on my Principle DB affect the mirror in anyway?
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Jun 19, 2014
One of my client asking mirroring between two server with witness.Is it possible witness and mirror in same server(with same instance)? OR Is it possible witness and primary in same server(with same instance) ? Best method to establishing mirroring with in two servers(with witness) ?
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Jan 27, 2015
After breaking the mirroring database to allow testing on the DR site, is the only way to re-establish the mirroring again to copy the backups from the actual production site ?. Can something be done on the DR site to put back the mirroring after the test ?.
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Aug 26, 2015
I have the following mirroing setup for DR.
Prinical(ServerA) and Mirror(ServerB)
When we do a DR test we do manual failover from Principal(ServerA) to Mirror(ServerB)
Now
ServerB is Prinicpal
ServerA is Mirror
Applications do their testing against the new principal which is ServerB but dont want to take those changes or sync to ServerA(Mirror).
Is there any way to do this without breaking the mirror?
Finally It will go back to original setup after the test which Server A is Principal and Server B will be its mirror.
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Jul 13, 2014
what are the commonly used system tables for mirroring
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Jul 14, 2014
Need to know some of the DMV'S and System Tables related to Database Mirroring.
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Sep 30, 2014
I'm setting up AG replication over our WAN (1GB MPLS). Using sql stress, AG replication quickly falls behind. Network throughput plateaus at ~14Mbs.
The problem ISN'T NETWORK
using conventional mirroring, the same workload never falls behind, throughput plateaus at ~26Mbs.
it's almost like log stream compression isn't happening for AG...
both mirroring and AG are using async.
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Apr 22, 2015
As the title suggests we are looking to change the service account of a SQL mirror implementation. I will be using the same account on all 3 servers involved in the configuration.
I know each server requires the account of the other two adding but as this will be the same account I assume this doesn't apply?
Also for mirrored databases already set up would I need to reconfigure the security for each one?
Is there anything I am missing?
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Jun 10, 2014
I have to mirror 3 DBs on my sql server instance . I have restored there full backups and log backups on mirror.I have also created endpoints on principal and mirror using default ports 5022 and 5023.
know if i can use the same endpoint for the databases on principal instance ?
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Jun 18, 2014
I was told that if I wanted to setup mirroring between multiple instance on the same server that each endpoint had to be different number. Is that true? Or can I use the default 5022 for each instance?
Ex.
Server1Instance1
Use endpoint 5022
Server1Instance2
Use endpoint 5022
VS
Server1Instance1
Use endpoint 5022
Server1Instance2
Use endpoint 5023
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Feb 4, 2015
We currently use Zabbix to monitor our SQL Servers, generally we use Perf_Counters to gather performance information (CPU Usage, Memory, Blocked process etc.), Zabbix also lets us monitor services as to whether they are up or down. I have searched google looking for any information regarding the monitoring of AlwaysOn/Mirroring within Zabbix and to date ave found nothing. What I am looking to alert on is an indication that Mirroring has stopped/ been interrupted with say something like "Not Synchronized"... Zabbix and monitoring SQL Server 2012 and specifically monitoring AlwaysOn...
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Sep 5, 2015
I want to configure the logshipping to secondary database.
Already the primary database transaction log backup running every 15 minutes through (maintanance plan)
I want to skip the transaction log backup job in logshipping configuartion(disable the job)
want to use the existing transaction log backup and copy and restore in secondary using logshipping configuration
is it possible in sql 2008 r2 standard edition.
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Mar 5, 2007
Ryan J. Boyle writes "I'm trying to set up repliction on my SQL 2005 instance. When I run through the "Configure Distribution Wizard" the wizard errors out, here is the following error message that I'm reciving. I can not find any information based on that SQL Server Error number (there is none in the help file go figure)
ERROR MESSAGE:
SQL Server could not configure <servername> as a Distributor
Additional Information:
An exception occurred while executing a Transact-SQL statement or batch Microsoft.SqlServer.ConnectionInfo
Only replication jobs or job schedules can be added, modiifed, dropped or viewed through replication stored procedures. Changed database context to 'master'(Microsoft SQL Server Error 22538)
Any help in troubleshooting what this issue could be that would be great.
Thanks in advance.
Ryan J. Boyle"
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May 1, 2006
Hi
I often deal with a problem when replicated database is down due to
electric outage or any other scheduled type of downtime. Primary
database is up but distribution agent is going down 'after 10 attempts
to connect to replicated database'. That's the problem I think because
not only distribution agent goes in undetermined state and I have to
restart sqlagent service, but I need to go through whole process of
snapshot and applaying it to replicated db. I would like it to
accumulate transactions in distribution database and once replicated db
is up - distribute them.
I wonder if anybody can tell me how to configure distribution thread so
it does not go down after 10 unsuccessfull attempts but stays for day
or two.
Thank you, Gene.
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Mar 10, 2008
Hi
There are some complex reports in my report server, so I want use scheduled snapshot to improve the performance. But I don't want the generation of snapshot effect other report. Is it possible I create another report server, and use the same reportservertempdb database but the reportserver database is different. Then I can configure the second server create the snapshot automatically. In other words, I want to configure 2 report server share the same snapshot or cache. Is it possible?
And another question is if I can configure the parameter value which will be used in snapshot generation.
Thanks and regards
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Nov 13, 2015
Is It Possible to Configure Log Shipping On a CDC Enabled Database?
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Jun 12, 2007
When I issue this command:
ALTER DATABASE foo set PARTNER = 'TCP://10.3.3.1:1234'
I get this error message:
The database is being closed before database mirroring is fully initialized. The ALTER DATABASE command failed.
What does that mean, and how do I fix it?
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