replication

问题 I am trying to use PowerShell to connect to ReplicationServer and backup replication. The SQL Server Edition is 2008 SP2. It works fine with Windows authentication but when I try to connect with SQL Server authentication it shows error New-Object : Cannot find an overload for "ReplicationServer" and the argument count: "1". At .....\Experiment.ps1:34 char:74 + [Microsoft.SqlServer.Replication.ReplicationServer]$var_server=new-object <<<< ("Microsoft.SqlServer.Replication.ReplicationServer")

问题 I have been reading the docs and from my understanding I could see a scenario whereby a rollback could still occur: Write goes to primary which confirms that the journal has been written to disk Majority of the secondaries confirm the write but do not write to disk Power fails on entire cluster Primary for some reason does not start back up when power is restored A secondary takes the primary role The original primary finally starts, rejoins the set as a secondary and rolls back Is this

问题 I have an ehcache Cache replicated across two machines. The peers correctly find each other and replicate once both peers are started. However, if the 1st peer starts first, and receives several elements, and then the 2nd peer starts later... the 2nd peer never sees the elements that were added while it was not yet alive. Here is exactly the order: Cache A is started Add "1234" to Cache A Cache B is started get "1234" from Cache B -> NOT FOUND My expectation: If 2 caches are replicated, then

问题 We have a system that uses replication to allow folks in two different locations to work with a common database back end. The network is not high quality, and slow so I used replication to put a back end at each location and keep them synchronized. Synchronization is done through the Replication Manager and synchronizer running on a schedule. This has been working great for the past two years. The system was originally developed and used with Access 2007 but with the back end in mdb format.

问题 I'm running a TurboGears app with mod_wsgi and apache, using pymongo wrapped with Ming for persistence. To failproof and scale my app I was interested in using mongo's support for replica sets through a pymongo ReplicaSetConnection. However, as specified in the above links, one must call close() when done with every pymongo ReplicaSetConnection object, otherwise it will leave a bunch of zombie processes floating around (wtf pymongo). This sort of behavior isn't supported very well in Ming (it

问题 We are setting up MarkLogic Cluster in Azure using data directory as Azure Blob container. Following steps has been followed Setup 1st MarkLogic server Added 2nd server in cluster by providing host name of 1st server Added 3rd server in cluster by providing host name of 1st server Add 3 forests, data directory is "azure://" as mentioned in page number 32 here In 1st Forest, added 2 as a replicas As soon as i add replica in Forest01, Label of Forest01 becomes empty with 0 size, before it is

问题 Is it possible to set up replication on a single mysql server, replicating a few tables (for readonly access) from one database to another? So say my server has 2 databases - DB1 and DB2. DB1 has tables tableA, tableB, and tableC. DB2 has tables tableD, tableE, and tableF. From DB2, I'd like to have access to data in tableA without doing a cross-database query because the databases will eventually reside on separate mysql servers on separate machines. 回答1: Try this ... http://dev.mysql.com

问题 Hopefully some SQL replication genius can help on this one. We've got some handheld devices that are using merge replication on our SQL 2008 R2 database to keep their local database in synch. This works most of the time but the client is requesting a report that shows the status of the synch as it progresses. Now I'm watching the msmerge_history and msmerge_session tables during the merge and I'm noticing that they state complete long before the device itself has completed. So the client is

问题 The in-house developed software where I work connects directly to a mysql server here in our office via our devexpress orm (XPO). Performance is great. We're opening another office... cross country. Performance: not so great. The requirement is that the software be as responsive in both offices as it is in this office and that the data from one office be available to the other 'in real time'. Something of this scale is totally new to me. I'm not averse to bringing in a consultant who's done

问题 I'm using a design document to ensure that only owners can modify docs. How can I prevent couchdb from replicating this design document? 回答1: You can use the filter option in changes() and replicate() , e.g. var opts = { live: true, filter: function(doc) { return doc._id.indexOf('_design') !== 0; } }; var db = new PouchDB('todos'); db.replicate.to('http://localhost:5984/todos', opts); 来源： https://stackoverflow.com/questions/26394999/filter-design-documents-with-pouchdb