For questions about database mirroring - a technology used to create and maintain an exact copy of a database, synchronously or asynchronously.

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7
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2answers
227 views

Microsoft SQL Server 2012 Mirrors Go Into Disconnected

I have some Microsoft SQL server 2012 mirrors, without a witness in asynchronous mode, that are sporadically going into disconnected. I am running SQL Server 2012 11.0.5058. Looking at the logs on ...
3
votes
2answers
791 views

SQL Server 2008 R2 Mirroring issues

I have this very frustrating problem that I've been trying to figure out for almost a week now. I have two SQL Server 2008 R2 STD w/SP3 box running on Windows 2012 R2 with two instances each, Server1 ...
3
votes
1answer
224 views

Replication throw an error after failover mirror partner is down in SQL Server

Received an error mentioned below after failover when mirror partner is down. Error : to fail over to a database which is not configured for database mirroring. code: 22037, text: 'Invalid ...
2
votes
1answer
52 views

Replace/upgrade mirrored server hardware

We are deploying new VMs for a mirrored database that is in high safety mode with automatic failover and also going from SQL Server 2008 to SQL Server 2008R2. Most of the documentation I've come ...
2
votes
1answer
1k views

Replication of a remote MySQL database to local MySQL database

I'm the developer of my employers corporate private website, a HTML5/PHP/CSS powered site for company reports etc. The site, hosted on a shared hosting package, connects to a remote read-only MySQL DB ...
1
vote
1answer
61 views

Can't mirror SQL Server 2012 database

I'm trying to set up database mirroring with SQL Server 2012 STD, but can't get it to work. Got this error: The server network address "TCP://sql2.fea-rp.local:5022" can not be reached or does not ...
-1
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1answer
19 views

SQL Server MIRRORING - FAIL ON SECONDARY

I have a problem in the SQL Server Mirroring. Current system: Server: S1 (Principal) & S2 (Secondary) Databases: D1 (2.5TB) & D2 (20GB) Situation 1: without witness 1. D1 & D2 were ...
3
votes
0answers
892 views

SQL Server Database Hot Backups: Which Technique(s) to Use for Multi-Level Replication?

I'm reading the many other posts here about mirroring vs. replication, but I'd still appreciate it if someone with some experience would weigh in. My small development team needs to have local ...
3
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0answers
907 views

SQL Server Database Mirroring : strange client application behavior upon failover

I am putting a HA SQL server environment up based on three SQL Server 2008 R2 machines and database mirroring. I'll name them : principal.company.intra mirror.company.intra witness.company.intra ...
2
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0answers
67 views

Trouble setting up mirroring on SQL Server 2016

I've setup a test SQL Server 2016 server. I've installed 2 instances, restored a backup on the primary. Then restored a backup on the secondary with NO RECOVERY, then restored the transactional log ...
2
votes
0answers
53 views

Shrinking a physical transaction log file on a mirrored database

I have 2 SQL Server 2008 Standard Edition instances that are mirrored. Both instances are running Service Pack 1. I run Full backups daily and transaction log backups every half hour (through ...
2
votes
0answers
70 views

CPU utilization reached 100% after changing OS time on SQL Server with Mirroring configured for a database

We have configured mirroring on SQL database server. Suddenly principal database server reached 100% CPU, windows log events shows following 2 logs This event is generated when the system time ...
2
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0answers
149 views

SQL Server 2008 R2 - Two Files Stuck In Restoring Status

Background: SQL Server 2008 R2 mirrored and clustered. We recently failed over the databases via mirror and everything went smoothly. When it was time to do a differential backup, I got an error so I ...
2
votes
0answers
73 views

Mirroring won't fail back

Got an interesting mirroring issue. I am using SQL Server 2008 R2. Server A mirrors 8 databases to Server B ideally. Right now the 8 databases are principal on Server B (otherwise healthy). When I ...
2
votes
0answers
50 views

How To Roll Back DR Transactions Without Breaking Mirror

We have a full data center DR test coming up and will need to fail over all of our SQL Server databases to the DR site. The majority (>80%) of our databases are SQL Server 2008 R2 using Database ...
2
votes
0answers
715 views

SQL Server mirroring causing issues

So we have a couple of SQL Server instances involved on mirroring without witness and operating mode is asynchronous in all cases. After we set put mirroring in place, we started facing connections ...
2
votes
0answers
129 views

Change Data Capture not running when Mirror is Suspended

We have 2 SQL 2012 SP2 Enterprise servers that have some mirrored databases. One of these databases also has CDC enabled on a number of tables so that we can run some business logic when there are ...
2
votes
0answers
340 views

database mirror problem with Network Service account

I have two SQL Server 2008 R2 instances installed on same Server and the engine log on as Network Service account which is set by installation. there is a database TestDB on both instances. I try to ...
1
vote
0answers
133 views

Database Mirroring: Cannot set witness in Microsoft SQL Server 2014 using Azure

I am using Azure. I am unable to connect to a witness server though Microsoft SQL Server 2014 for database mirroring. Everything I have researched seems to point to this article https://support....
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0answers
32 views

Why am I getting this network error when setting up database mirroring?

I have two servers, one in the Portsmouth, NH datacenter, one in the Kansas City datacenter, same domain. Trying to set up mirroring. First, does it matter that one server has Windows 2008R2 server ...
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vote
0answers
24 views

Split Mirror Backup in db2

In my database apart from storing the daily backup, the disks are getting used for other purposes also. So how can I do the disk mirroring for Split Mirror Backup if I don't use external storage?
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vote
0answers
72 views

SQL Server agent error on a the mirror database

I configured mirroring on one of my databases. The database is in a SQL Server cluster. The mirroring is working great, but all the jobs that set to run fail. The error is: Date 9/10/2015 8:...
1
vote
0answers
39 views

SQL Server Mirroring Removed

Does anyone know how to tell when SQL Server mirroring was removed from a database? My log file is flooded with login failures but I can't find mention of removing of a mirror. Is there any DMV way ...
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vote
0answers
296 views

Could not redo log record on mirror

One of my database mirrors is in the suspended state today and the error log on the mirror shows the following. Could not redo log record (338934:102862:477), for transaction ID (0:848150408), ...
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0answers
40 views

Endpoint acting as a mirror and witness?

Let's say I have 4 SQLServer 2012 R2 divided into two mirrors: SQL1-1 with its mirror SQL1-2. The Witness is SQL2-2. SQL2-1 with its mirror SQL2-2. The Witness is SQL1-2. The mirorring has been ...
1
vote
0answers
19 views

Transactional publication and database mirroring considerations

I've recently taken over a project, and with it comes 2 backends. 1st is the production services backend and the 2nd is a reporting service backend. Both of which are 2008r2 instances. The production ...
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vote
0answers
276 views

Set up sql server db mirror specifying IP address for mirroring_partner_instance

Ok. I run: ALTER DATABASE DbName SET PARTNER = 'tcp://10.0.0.0:5022' Command completed succesfully Then run SELECT DB_NAME(database_id) AS 'DatabaseName', mirroring_partner_instance FROM sys....
1
vote
0answers
120 views

Why database replication fails when database mirroring is broken?

I'm trying to understand what effect database mirroring can have on replication in SQL Server 2008. Here is current environment: (don't ask me why it was done this way or to change it) Server A: SQL ...
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vote
0answers
522 views

SQL Server spending a lot of time creating sp_dbmmonitorupdate

I have an SQL Server 2008 R2 Standard with around 80 databases, 18 of which are a synchronous mirror primary. I'm having a lot of complaints about database speed lately, so I've started digging with ...
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vote
0answers
79 views

mirroring on sql server 2012 on different windows server 2012

I have 2 servers *.203 and *.205 I have sql server 2012 on each of them I tried to make mirroring between them every thing goes successfuly but when I tried to start mirroring it gives me ...
1
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0answers
54 views

What happens if SQL Server mirroring fails over and during synchronisation?

I have two sql boxes, one primary and one mirror. The mirror stopped synchronising last night for about 12 hours and so now the primary is transferring about 25GB of logs that built up. However it'...
1
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0answers
42 views

Data mirroring suggestions

On my test environment, I have a SQL 2012 2-node physical cluster that accesses a common iSCSI storage on a separate Windows Server 2012 box. What options are there if I want to backup this storage to ...
1
vote
0answers
727 views

SQL Server: Principal DB becomes unavailable after problem with mirror DB, even with Set Partner Safety Off?

We've got a very simple mirroring setup here: just a principal DB and mirror DB, no witness, running in high-performance mode with SET PARTNER SAFETY OFF. This problem has happened to us twice now: ...
0
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0answers
20 views

Mirror Suspended - can't detatch

We have a site where they have MS SQL 2005 and we are mirroring a database. At some point around Xmas it's stopped mirroring after an unscheduled reboot. Trying to resume just throws an error, and ...
0
votes
0answers
63 views

Application trying to connect to mirror DB randomly

We have a couple of SQL Server 2012 instances involved on mirroring without witness and operating mode is asynchronous in all cases and we do not use witness, so there is no automatic failover. JNDI ...
0
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0answers
139 views

Unexpected server behavior with SQL Server

Production server inexplicably responds. Server runs on Windows Server 2012 Hyper-V. There is also identical to the DR server. On Server stores the production base, and is configured and Mirror ...
0
votes
0answers
58 views

Mirroring DB failover, and found Schema different

I set two database mirroring with Safety OFF. Once I do failover to mirroring DB, I found there are some Stored Procedure Schema different. Does anyone have same problem before ? What is the root ...
0
votes
0answers
165 views

Backup Mirror database

I have database mirroring setup between two SQL 2012 servers in two different datacenters. For testing purposes in the "mirrored" datacenter I would like to create a working copy of the database. ...
0
votes
0answers
332 views

How to clean DBMIRROR_EVENTS_QUEUE process on broken mirror?

We setup mirror (on SQL Server 2008 R2), but it fails during the setup. After that the mirror was moved on another server. My problem is that it left some process, because on that server I see active ...
0
votes
0answers
50 views

SQL Server Mirroring with Certificates

I'm struggling with setting up mirroring with the following configuration: Server 1 running SQL Server Standard 2008 R2, Principal Server 2 running SQL Server Standard 2008 R2, Mirror Server 3 ...
0
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0answers
42 views

MySQL: migration huge tables between two databases

Hello guys (and sorry for my English). I have 2 DB's - DB1 (staging) and DB2 (production), each day some contend added/changed in some tables in DB1 and should be moved to DB2. Right now it works ...
0
votes
0answers
606 views

SQL Mirroring synchronize logins and agent jobs

We have just started using SQL Server mirroring for several clients on SQL Server 2008 R2 Standard. We've got the SQL Server mirroring working fine however now we run into the issue of replicating ...
0
votes
0answers
173 views

Mirroring failed over - created 2 principal database and will not allow me to drop one of them

For some reason my mirrored servers triggered an automatic failover. I have 2 databases that both think they are the principal server, one is "Principal, Synchronized/In Recovery" and the other is "...
0
votes
0answers
27 views

Any way of checking mirroring monitoring whilst the primary is unavailable?

I have two sql boxes, one primary and one mirror. The mirror stopped synchronising last night for about 12 hours and so now the primary is transferring about 25GB of logs that built up. It's now ...
0
votes
0answers
427 views

Mirror database on same server instance for better read performance?

I am developing a somewhat big web application, which uses data which is aggregated using a crawler. The crawler is constantly writing to the database and updates many tables at the same time. For the ...
0
votes
0answers
547 views

SQL Server: mirroring several tables in different databases

I want to keep several tables in two different databases mirrored. Both databases are within the same server, and both are SQL Server dbs. This mirroring only affects the data they contain, not the ...
0
votes
0answers
335 views

SQL Server Mirroring send/receive ack time not normal

I have a problem that arises during the performance test by microsoft team in my client. The report that is given to us provide information about whether or not a parameter is good based on the Object ...