Administration and monitoring must occur at the active server. For example, if you failover to the mirror, the publications are displayed at the mirror and are no longer displayed at the principal. If the database fails over to the mirror, you might need to manually refresh Management Studio and Replication Monitor for the change to be reflected. Replication Monitor displays Publisher nodes in the object tree for both the principal and the mirror. If the principal is the active server, publication information is displayed only under the principal node in Replication Monitor.
If an agent has an error, the error is indicated only on the principal node, not on the mirror node. If the principal is unavailable, the principal and mirror nodes display identical lists of publications. Monitoring should be performed on the publications under the mirror node.
When using stored procedures or Replication Management Objects RMO to administer replication at the mirror, for cases in which you specify the Publisher name, you must specify the name of the instance on which the database was enabled for replication.
To determine the appropriate name, use the function publishingservername. When a publication database is mirrored, the replication metadata stored in the mirrored database is identical to the metadata stored in the principal database. Consequently, for publication databases enabled for replication at the principal, the Publisher instance name stored in system tables at the mirror is the name of the principal, not the mirror.
This affects replication configuration and maintenance if the publication database fails over to the mirror. If you enable a publication database at the mirror after failover to the mirror, the Publisher instance name stored in system tables is the name of the mirror; in this case, you would use the name of the mirror for the publisher parameter.
To synchronize a subscription in Management Studio after a failover: synchronize pull subscriptions from the Subscriber; and synchronize push subscriptions from the active Publisher. If the publication database at the principal is no longer mirrored, replication continues to work unchanged against the original principal.
If the publication database fails over from the principal to the mirror and the mirroring relationship is subsequently disabled or removed, replication agents will not function against the mirror. If the principal is permanently lost, disable and then reconfigure replication with the mirror specified as the Publisher. If database mirroring is removed completely, the mirror database is in a recovery state and must be restored in order to become functional.
This option forces the restore operation to preserve replication settings when restoring a published database to a server other than that on which the backup was created. The option is not supported if the other publication database is still intact and replicating. The following table describes Log Reader Agent behavior for the various operating modes of database mirroring. Skip to main content. This browser is no longer supported. Download Microsoft Edge More info. Contents Exit focus mode.
Is this page helpful? Please rate your experience Yes No. Think of vSphere replication in Vmware. Same is the requirement for one physical sql server database. Hope you got my concern. And I am unable to understand , why would he need additional license as the db would ne running at only one place at a time. Primary server as it has a failure It would be in off state and once it is back I may replicate the running sql db to primary location.
I request you to suggest me the best solution. Customer is open to a downtime of 30minutes. But he is not willing to spend on another SQL licensing.
If it is going to be passive turned off or not being used then it doesn't have to be licensed following the guidelines I posted previously.
This is true for SQL Server replication as well. It doesn't have to be turned off. It can just be sitting there passively not being used. Either way, it doesn't require additional licenses if you have Software Assurance or if you don't have Software Assurance, you are limited to a single fail over event within a 90 day period. This is true whether using block-level replication or native replication it has to be a push model, not pull. Also true if using log shipping, mirroring, Availability Groups, or failover clustering to keep the DR site in sync.
That is where the confusion lies. The method you use to keep it in sync does not change the licensing rules as long as the DR site is passive. And secondly U referring to Sql native replication How it works and what is the architecture??
How it replicates from primary to Dr and how it can be made up in the event of disaster without having sql server at Dr site. I'm sorry. I don't now how to make it any clearer than that. I had to read it many times before I understood it well enough to speak on it. To continue this discussion, please ask a new question. Get answers from your peers along with millions of IT pros who visit Spiceworks. Due to budget constraint, he can't procure an additional SQL License thus has decided to use some sort of software which can do a live replication over a WAN Request you all to help me with some kind of software which may serve the purpose.
Please suggest some good software which can serve the purpose. Thanks in advance. SQDR can be the linchpin of your disaster recovery approach. Get reliable replication from MySQL to any database pairings. Make the process easy and affordable. Make reliable, real-time MySQL data replication a reality. Fill out the form below and one of our expert consultants will be in touch shortly to show you SQDR in action. Download the Tech Spec Demo the Software.
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