Can refer to disks in a RAID-1 configuration, or low-latency database replication strategies.

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2
votes
2answers
156 views

Impact of using mirroring to migrate between SQL Server 2005 and SQL Server 2008 R2

I've got a DB which sits on a machine (SQL Server 2005) due for replacement very soon. I'm planning on having the database mirrored to the replacement machine (SQL Server 2008 R2) so that when the ...
4
votes
2answers
4k views

What are the differences between Mirroring and Failover Clustering and when is each one recommended over the other?

What are the main differences between Mirroring and Failover Clustering? What kind of problem each one solves and in what kind of scenarios is each one recommended over the other?
1
vote
1answer
117 views

Rolling changes to production databases

We're currently using Clustering to do fail over for our SQL environment. There are two servers that use the same shared drive. The SQL database is on a shared drive. This provides OS and hardware ...
0
votes
1answer
191 views

Database mirroring on Rackspace or Xeround

I´m trying to resolve following problem. I have 2 application servers on Rackspace that are connected to a load balancer. Both servers must have the same applications and share the same data. ...
8
votes
2answers
414 views

Mirror log empty on primary but fine on the mirror

We have dozens of principle servers and corresponding mirrors, most are working fine, however, 1 of them is acting strange. Specifically, the sp_dbmmonitorresults proc returns all columns as NULL for ...
1
vote
1answer
300 views

Mirroring multiple source databases to a single destination in SQL Server 2008

How can we maintain multiple source databases data in a single destination server database in SQL Server 2008? They all are at different networks, if that makes any difference.
2
votes
0answers
81 views

Permon counters on SQL 2005 mirroring (user defined counter log file is empty) [closed]

I've been attempting to gather performance counters for mirroring using perfmon, over a period of time and saving this to a log file. I am able to do this without problem for general SQL Server ...
1
vote
1answer
250 views

How to execute some script when database starts up

I want to execute some T-sql code, when a database starts up. the objective is to resume a session of mirroring in case the session is "suspended" when the database comes "back to life". So I've ...
2
votes
1answer
771 views

Mirroring not working after a server crash

I'm using SQL Server 2008R2. Last night, the host machine on which my mirror database was running basically went belly up. Thankfully the principle database was on a different host server and so was ...
0
votes
2answers
643 views

Mirroring after restoring the database on a new machine

We've had alot of problems with one of our database servers and two days ago the call was made to change a disk and reinstall the OS. Now this server functioned as part of a mirroring setup. Basically ...
3
votes
1answer
1k views

SQL Server Mirroring vs 3rd party replication products such as DoubleTake

I'm charged with looking after several SQL Server instances, most of which use SQL Server mirroring to replicate data for DR purposes. I automatically script logins, roles & jobs to the mirror, ...
8
votes
2answers
3k views

How to create an Event Notification that runs a Job/procedure when mirroring state changes

I'm asking this question in the sequence of this one Can I send a string over TCP using T-SQL? Remus Rusanu exposes what it seems to be an optimal solution for my problem, but... I'm too immature to ...
1
vote
2answers
447 views

Can I send a string over TCP using T-SQL?

I've set up some alerts, based on this article Now I would like the Job that is triggered by the alert to send some information to a c# application (this application, can be running in the same ...
2
votes
2answers
2k views

Reconnect mirroring server SQL2008 R2

The failover server has status (Mirror, Disconnected, In recovery) and principal server has status (Principal, Disconnected). What is the process to reconnect these servers?
1
vote
2answers
171 views

In SQL Server 2008R2 Will currently deployed applications still work if I turn on Mirroring without changing connection strings?

I've googled a great deal, and can't come up with an answer to this. In SQL Server 2008R2 will currently deployed applications (Asp.Net, .Net Smart Client) still work (with a connection string ...
1
vote
1answer
2k views

Can I check if a Mirror database was synchronized when the principal died?

having 2 machines, one being the principal and the second one as a mirror in case of failure of the 1st one. without witness but in High Safety mode Is any way to check if the mirror DB was ...
3
votes
1answer
153 views

Create incremental/differential backups in ProgressDB

Is there a way to create incremental/differential backups in ProgressDB?
1
vote
1answer
525 views

Replicate/Mirror SQL Server schema to slave databases

I have a empty database called MASTERDB and around 10, or more, slave databases that are copies of the MASTERDB database. MASTERDB will be always empty, as I only need the schema. No data is going to ...
2
votes
2answers
1k views

Manual failover error, not in correct state

i'm doing some tests to build one database with one mirror database and one witness. so far, i'm failing in the first test, I want to kill the witness, then the Main database, and then put the Mirror ...
4
votes
2answers
2k views

Read-only copy of SQL Server database

We have main database, through out day we insert/update this DB through main application(windows). We have another web application which is suppose to just display content from main DB but instead we ...
2
votes
3answers
3k views

How to Setup SQL Server 2008 R2 Mirror

I am trying to set up SQL Server 2008 R2 mirroring but I am getting stuck with this error: An error occurred while starting mirroring. Additional Information: Alter failed for Database ...
4
votes
3answers
700 views

Is there an easy way to trigger automatic failover of a single mirrored database?

I have 3 mirrored databases on a single instance of sqlserver2008-R2 in a high safety with automatic failover config. Is there a way to trigger automatic failover of just 1 database? I want to ...
6
votes
1answer
742 views

Mirroring problems after removing domain

I successfully created a mirror with certificates between two servers. One of those servers was a domain controller. After removing the domain the mirror was interrupted. After hours of searching I ...
2
votes
1answer
424 views

SQL Server 2008 Mirroring Pauses without warning

I have several databases mirroring with a witness. All 3 machines are local to our network and have generous nics. Monitoring the mirroring, it does not seem like there is a lot of network traffic. ...
4
votes
3answers
2k views

How to sync the data between two identical DB

The thing is I've two identical databases, one is in my localhostserver at my laptop and the other one is on the office main server. Is there any automatic way or software that can synchronize the ...
0
votes
2answers
476 views

Upgrading Instances with Mirroring

If you want to upgrade or install a patch on two separate instances that house both the principal and mirrored database, how can you go about that? If the database that is being mirrored needs to be ...
5
votes
1answer
453 views

Mirroring partner timeout - Not working the way advertised?

I'm testing a 2 node windows failover cluster with mirroring in high safety mode and automatic failover. My mirror is a standalone server as is the witness. All instances are 2008 R2 RTM Enterprise ...
3
votes
2answers
722 views

What is the best way to mirror an ASPState database?

I'm not having issues with the actual mirroring part, but because of the use of temporary tables, IIS is throwing a bit of a wobbler if a failover occurs (I'm still testing a few things, so it's me ...
1
vote
3answers
3k views

Why are my SQL Server 2008R2 databases not mirroring?

I'm trying to set up database mirroring in SQL Server 2008R2. I've taken a full backup and a transactional backup from my principal database and I've restored both WITH NORECOVERY. However, my mirror ...
2
votes
5answers
2k views

Setting up a Redundant Sql Server 2008 Configuration While Retaining High Performance and Minimal Downtime

We have a situation where we are moving to a new hosting facility and are attempting to configure our new database environment. However, none of us are formal DBA's so a lot of what we are doing is ...
6
votes
1answer
2k views

Database Mirroring with TDE

I have the requirement of mirroring a few databases and also using transparent data encryption (TDE) on them as our data must be encrypted while 'at rest'. I have setup TDE on both the principle and ...
5
votes
1answer
527 views

Alerting on Database Mirroring Events

I am looking for the actions one must take to cause Threshold Alerts to occur for a single mirrored database on an instance of SQL Server 2008 containing multiple mirrored databases. FYI: This is ...
2
votes
2answers
405 views

Database Mirroring Failure Reasons

I was wondering if there is any information on what scenarios might cause a DB Mirror to have to be recreated? I am attempting to research how sturdy the technology is and under what scenarios do we ...
4
votes
1answer
593 views

Impact of an Asynchronous Mirror / Full Recovery Model on Performance

For an asynchronous mirror in SQL Server 2008 R2, using the full recovery model is required. Assuming that the network and disk IO on both sides of the Mirror can keep up with the transaction logs ...
2
votes
2answers
3k views

Database mirroring - Witness only

In SQL Server 2008 R2 Express the only mirroring alternative is "Witness only", however I can't find a good explenation to what this is. I would like to have a database on a virtual server and then ...
7
votes
1answer
7k views

Breaking and Restoring a mirror

I have to do some maintenance on a secondary node of a mirror. Since this is the result of the site becoming slow while the mirror re-established after a brief network outage I want to be safe and ...
3
votes
2answers
161 views

Database Mirroring of SQL server

I have two databases that are mirrored to another server using database mirroring. The mirror server has to be down for some reason for few days. Now, the production server is having principal ...