How to replicate data in Kafka to the cloud securely
We are currently running two Kafka clusters. One is inside our corporate network and another is in AWS. We need to stream data from the internal Kafka to the cluster in AWS. Mirror Maker is currently...
View Article"Oneway" Replication from Oracle DB to TimesTen
currently I'm really stuck into a problem and I not able to finde a nice way to realize that. I need a suggestion to replicate from oracle db (some tables) to a TimesTen. A connection is only possible...
View ArticleConfiguring slave from EC2 master to Amazon RDS slave
I am configuring replication from EC2 master to Amazon RDS instance. After starting the slave, I don't see any errors but I see slave_IO: _thread is connecting. Master version:5.6.23 Slave...
View ArticleRun MySQL replication by schedule or on demand
I have a master-slave replication currently configured. I know this setup runs real time. Is it possible to sync only the databases on schedule (daily or weekly) or by demand? Thanks!
View ArticleAS/400 + DB2 to MongoDB?
I'm not seeing a whole lot of info on the subject, so I figured I'd ask people who might know more about it than I do: Is it possible to replicate data from an AS/400 + IBM DB2 instance to MongoDB? If...
View ArticleAdding table to sql merge replication without reinitializing
I had read some articles online that it was possible to add a table to an existing sql merge replication without having to reinitialize the database at the users' side. I created the table, added it to...
View ArticleTransactions between two replicating master mysql servers
With a replicating mysql master to master database with innodb engine, if one transaction were to initiate on database A will that row lock for database B until the transaction has been committed?
View ArticleTransactions and Master + Slave Replication
I'm looking to clear up a bit of confusion. I have a master + slaves setup. I have one master, and 3 slaves. All writes (INSERT|UPDATE|DELETE) go the master. All reads (SELECT) go to one of the slaves,...
View ArticleReplicating Triggers
I am doing some analysis on merge replication and triggers for a project. I have two tables, Product and Audit that I am replicating. I have an update trigger on the Product table which is replicated....
View ArticleBi-directional replication for the same MySQL table
AppA stores/retrieves data from dbA.tableA AppB stores/retrieves data from dbB.tableA tableA definition is the same across these databases. To start with dbB.tableA was copied from dbA.tableA (assuming...
View ArticleWhich one to use? InnoDB Replication or MySQL Cluster?
I am building a url shortener and I use InnoDB as the storage engine for link data. I will start with a single VPS containing both application instance and MySQL database instance on the same Virtual...
View ArticleMongoDB to MySQL Replication Automatically
i have Mongodb server and mysql server. i want to use mongodb for "write" and mysql for "read". so i am looking for some tool or some process by which we can tranfer mongodb to mysql server on regular...
View ArticleIs reply to client about transaction commit, before binary log or after?
When does MySQL server reply to client that a SQL statement has completed or a transaction has been committed? Before it writes to binary log or after?
View Article"The schema script could not be propagated to the subscriber" error...
This type of error is unfortunately not uncommon. One report of many is this one on Stack Overflow:...
View ArticleMariaDB replication- slave with high loadavg and writes/sec [on hold]
We recently set a master-slave replication with MariaDB 10.1.12 on RedHat 6.7 fully patched. Master and slave are powerful Dell R730 with 2 RAID arrays- 1) 2 x 15k SAS drives for OS in RAID1 2) 4 x...
View ArticleGalera Replication error: log block numbers mismatch
I am attempting to get Galera replication working between two nodes. I am finding these errors in my innobackup.backup.log file: xtrabackup: error: log block numbers mismatch: xtrabackup: error:...
View ArticleReplication - Daylight Saving time related issues
We had our replication subscribers complain when the clocks moved forward from 2 am to 3 am Pacific Time a few days back. And we noticed subscribers received delayed data. Our publications complained...
View ArticleMySQL Circular Replication
I have this scenario where I have 4 MySQL servers (A,B,C,D), as this: Server (A) is always online, and serves as the main website. Servers (B,C and D) are online on random periods of the day, and not...
View ArticlePostgresql 9.4 replication not working
I have setup my replication as per https://www.digitalocean.com/community/tutorials/how-to-set-up-master-slave-replication-on-postgresql-on-an-ubuntu-12-04-vps. When I start my slave and check for...
View ArticleReplication for DWH to DM transfer?
What do you think is the best option for keeping a Datamart up to date? We consume the information from a DWH... Not sure if I should use replication,alwayson,logshipping or mirroring… What’s best...
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