database-replication

问题 We are trying to setup an Azure Database Sync group to replicate our data from an on-premise server to an Azure SQL database. This as a first step for a migration to Azure. The Sync Group and Sync Agent have all been set up. When we press the 'Sync' button we receive following error: Trigger Sync Failed: Failed to perform data sync operation: Table '[dbo].[DocumentTypeDocumentVariables]' do not have clustered index. This table did not have a clustered index but an unclustered unique primairy

问题 I've been experimenting with master-master replication between two MySQL servers but with different database names and I've come accross a bit of a stumbling block. It appears that although UPDATEs work correctly as expected, INSERTs do not. While I would say that this is a bug or at least a problem with my setup, it appears that MySQL says that this is a feature (here and here). If then, as MySQL say, it only works on the default database, then how can this setting have a practical real

问题 I am just wondering how I can use a Master/Slave MySQL replication database with MyBatis. JDBC offers a com.mysql.jdbc.ReplicationDriver (see here), but I couldn't find out where I can use similar things including all the nice properties I can configure ( roundRobinLoadBalance , autoReconnect ,...) in MyBatis. Currently I have configured my none-replicated database in MyBatis like this: <environments default="development"> <environment id="development"> <transactionManager type="JDBC" />

问题 On my local machine, I maintain several InnoDB tables which are mirror replica of the ones on my web server. Whenever I have new or updated data, I perform that on the local tables. For the updates, it's typically to only a few fields of some tables. Doing locally helps me to perform processing and validation of the data before staging. Finally, I want to move these differential data to the remote server. How can I best achieve this whole process of data migration. There are a few stages

问题 I'm using a multi-db in my Django app with a master database and a read replica, but to avoid replication lag problems the router always uses default database except few places where I set DB manually. I'm facing an issue as I don't know how to specify the database used for prefetch_related. For example I want the next query to use only read_replica DB, but it does 2 queries, the first goes to read_replica as expected and the second goes to default DB. users = UserProfile.objects.using('read

问题 I have old database server as SQL Server 2000 whose data has to be periodically updated to the SQL Server 2008 server (may be one time per day). So I have planned to use the replication. First I have created distribution database in SQL Server 2000 & added the new database as publisher. But when I created the subscriber in SQL Server 2008 & connects to SQL Server 2000 then the publisher doesn't appear in the list. What could be the reason, I am using SQL Server 2008 express edition or if any

问题 I'm developing a small ad-hoc replication framework (for a reatil company), which replicates only certain records of certain tables (about 200) depending on specific domain-level logic. In order to know the replication status of each record for each target host, I have a repStatus character (NUMBER_OF_HOSTS) type column; where a host always represents the same position. The values in each position of this column could be 0 ( no action ), 1 ( replicate record ), 2 ( record replicated ), 3 (

问题 Most of the nosql solution only use eventually consistency, and given that DynamoDB replicate the data into three datacenter, how does read after write consistency is being maintained? What would be generic approach to this kind of problem? I think it is interesting since even in MySQL replication data is replicated asynchronously. 回答1: I'll use MySQL to illustrate the answer, since you mentioned it, though, obviously, neither of us is implying that DynamoDB runs on MySQL. In a single network

问题 I have successfully set up a master to slave environment and it is definitely working fine. The only problem I have is that selecting count from a table, they are not the same BUT selecting after 5 mins from master, 50 rows are created while on the slave, also 50 rows are created (that's why I said i'm sure that is working fine) Master: +----------+ | COUNT(*) | +----------+ | 77634 | +----------+ 1 row in set (0.00 sec) Slave: +----------+ | COUNT(*) | +----------+ | 76932 | +----------+ 1

问题 I'm trying to set up replication in MySQL but I am being given an error that I do not know how to fix - ERROR 1218 (08S01): Error connecting to master: Host 'sh047.mydomain.com' is not allowed to connect to this MySQL server I've added the following code to the master my.ini - server-id=238429 log-bin=mysql-bin log-error=mysql-bin.err binlog_do_db=my_databases_to_replicate {not literal, have listed the correct databases} And I've added this to the slave my.ini - server-id=2 master-host=192