SQL Server 2008 R2 Replication Failing w/ Error 1204
I am working on a SQL Server 2008 R2 server. On this server are two instances (let's call them A and B). A replicates one of it's databases to B using a transactional replication. This replication...
View ArticleIs SQL Server Replication transactionally 'safe' across all published tables?
We have a system that has one of its datasources still on SQL Server 2000. In order to achieve higher availability, we are looking to setup transactional replication from this 2000 server to a 2008...
View ArticleSingle slave - multiple master MySQL replication
I need to replicate different MySQL databases from multiple servers into a single slave server. How can this be done? is there a way to define multiple master hosts?
View ArticleMongodb replica set: Database Size Difference
What are the possible reasons for a difference in database size in primary and secondary nodes of a MongoDB replica set. In my setup, the Secondary node database is of higher size than the primary one....
View ArticleSynchronizing a RDS instance with another RDS instance
I have a database on an RDS Instance (master) that needs to be synchronized to another RDS instance (slave). I created a read-replica for the first one, but that is created as read_only so I cannot do...
View ArticleCassandra different replication factor across cluster
Is is possible to have different replication settings on different nodes of the same cluster? (All DCs have same keyspace/tables, but different replication settings) We would like to have DC1 and DC2...
View ArticleHow to get replication agents programatically in AEM?
I have a question if there is a different way to get an author replication agents then using a sling query ?
View ArticleRethinkdb replication and data consistency
What happens when one of the replicas dies temporary/permanently and how does it relate with data consistency? For example let's consider this situation: I made an update of a document inside fruits...
View Articlemariadb replication error on slave restart
I have mariadb galera cluster running, with 1 slave for replication. everything works fine, but when I restart slave, I get such log: 150814 14:31:44 [Note] Master 'mariadb1': Slave I/O thread:...
View ArticleFinding differences between a master and slave when pt-table-sync fails
I have a table that's showing some differences on a master and slave according to pt-table-checksum (PTC). I've found some verifying differences beyond that. Certain tables in the mix have composite...
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MySQL 5.1.66 SSL connection error ERROR 2026 (HY000)
UPDATE2 Using WireShark I found out the problem string (I hope I did): 28 | 9.582638 | 192.168.18.128 | 192.168.18.129 | MySQL Response Error 1043 And the error is (according to docs): Error: 1043...
View ArticleMySQL failover - Master to Master Replication
My company is trying to implement a MySQL failover mechanism, to achieve higher availability in our webservices tier - we commercialize a SaaS solution. To that end we have some low-end VMs scattered...
View ArticleOpenflow 1.3 and ip multicast support
I'm just starting w/ OpenFlow 1.3, and i'd like to know if it support ip multicast e.g. replication? If yes, where could i get the documentation, CLI's.
View ArticleDatabase Mirroring and Replication in SQL Server 2008 R2
I have configured the mirroring and replication between 4 servers (A,B,C,D).i.e, Mirroring between A to B and C to D, Replication between A and C. The configuration was a success and I am able test the...
View ArticleHow to make distributor highly available in Always On Configuration
We have clients requested us to configure Always on with Replication. Microsoft does not support it. "The distributor should not be a host for any of the current (or intended) replicas of the...
View ArticlePostgresql - Minor version upgrade 9.3.5 to 9.3.6 on Ubuntu
I am two servers: A & B. My master database is running on A and the version is 9.3.5. It's replica is running on B and the version is 9.3.6. I am trying to use B as UPSTREAM slave, and trying to...
View ArticleScaling a postgres server to multiple servers
Our postgres server is about hitting its capacity and we're looking into adding a second database server. Are there any scaling solutions that are particularly good for a postgres setup?
View Articlemongodb replication node stuck at “STARTUP2” with optimeDate as 1970
i have just setup replica sets with three nodes . the third node is stuck at stateStr STARTUP2 with "optimeDate" : ISODate("1970-01-01T00:00:00Z"). However its showing no error message. Is this...
View ArticleDoubts about Converting MyISAM to InnoDB (master/slave and more)
I want to convert my MySQL DB (46 Tables, 2.1 GB) from MyISAM to InnoDB. I have a couple of questions about this process. Since I have a Master/Slave structure, do I need to manage this and change the...
View ArticleMySQL Master-Master Crash-Safe Replication: Slow UPDATE times
Environment 2 MySQL version 5.6.26 Dedicated MySQL Servers connected on a LAN. Servers Have 16 Cores with 32 GB RAM each and are really fast. Master-Master Crash Safe Replication is setup on both...
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