Is log shipping good for periodic synchronization?
I have Postgresql 9.3 server on both my laptop and my desktop at home. I keep identical data on both system. Sometimes I work on the database on my laptop while other times I work on the database on...
View ArticleHow do I synchronize rows in tables in remote databases?
I'm actually developing a synchronization tool in vb.net, I have two database that have on each table records field GUID, this field help to have the same PK on both database. On each record there is...
View ArticlePerformance impact on primary instance when querying read-only replica
I am currently working on an application that continuously queries a database for real time data to be displayed. In order to have minimal impact on systems which are writing to database, which are...
View ArticleData back up from one to another remote server [on hold]
Will it be good to do the data mirroring from a remote location as a back up instead log shipping.
View ArticleWhen to use master-master replication VS master-slave replication
I am using CouchDB as my noSQL database for a CRM solution. CouchDB uses a master-master replication. Compared to this mongodb uses a master-slave replication. Being a little newcomer to NoSQL, I would...
View ArticleDeploy Existing MongoDB Replica Set with MongoDB Ops Manager
I'm trying to use Ops Manager to automate my current deployment. I installed all of the automation agents on every server, and then tried to deploy with Ops Manager. Ops manager detects all the servers...
View Articlegerrit to gerrit replication issue
I have got a gerrit 2.8.6 currently live, and I am about to roll out a complete new infrastructure based on gerrit 2.11. To verify the functionality of the new infrastructure, I wanted to setup gerrit...
View ArticleCan I make my distribution database use In-Memory OLTP?
Is it possible to have all the distribution tables use In-Memory OLTP (formerly known as Hekaton) for enhancing performance of the distribution database? Have you tried it? Did that increase the...
View ArticleMongoDB: One of the nodes of replica set not able to sync with master
I am using mongoDB and my simple cluster consists of one primary and two slaves for replication. One of my slaves runs slow at times and is not able to catch with primary. Since primary maintains a...
View ArticleMySQL replication fails with error
I've got two mysql servers and they are configured to act as master and slave for mysql replication. Things works fine till I execute following query against the master database. The query runs without...
View ArticleWhat is the difference of master/master and master/slave replication? [on hold]
I am writing a documentation, and can't find enough information about master/master and master/slave replication, like difference, when to use, what it is? Could someone give me good examples en...
View ArticleAerospike cluster with different replication factors
I have a cluster with replication factor of 6 (and 6 nodes). I want to change the replication factor to 3 without downtime. What happens if I change the RF node by node and restart each node? Is it...
View ArticleAdd article to transactional publication without generating new snapshot
Using SQL 2008 R2 transactional replication with pull subscribers, when we add an article, I'd like to avoid having to create an entire snapshot (the db is ~80 GB, so this takes hours). From this...
View ArticleWhat are alternatives to Replication to distibute data (Microsoft SQL Server)
Is anyone knowledgeable of alternatives to SQL Server replication? I have a scenario where separate databases will share a lot of the same data which complex queries will match against. We want to...
View ArticleRecovery from Live to a new Slave Server - PostgreSQL - ERROR
I've started a new SLAVE PostgreSQL server set up. master: 192.168.100.1 slave1: 192.168.100.2 slave2(NEW SLAVE) 192.168.100.3 * NOTE: I run the pg_basebackup from another STANDBY SERVER. Not from the...
View ArticleStep by step guide to upgrade PostgreSQL from 9.4 to 9.5
I am looking for a detailed step by step guide to upgrade my PostgreSQL 9.4 to 9.5, with all the existing configuration and settings to newly upgraded version. official postgres doc with option to...
View ArticlePostgresql Chained Slaves and Slave Promotion
So I have a setup like Master -> Slave1 -> Slave2. Slave1 replicates from Master and Slave2 replicates from Slave1. If I promote Slave1 to master is it possible for Slave2 to continue replicating...
View ArticleMySQL slave stuck at 'System lock' most of the time, high CPU usage
Let me describe what we are facing now: We have a MySQL Master-Slave, Row Based Replication setup and at the moment, the slave is stuck with a perpetual System Lock. The Master is an active server with...
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 ArticleVague replication error code 2005
2015-04-07 13:49:53 23758 [ERROR] Slave I/O: error connecting to master 'replication'@master-host:3306' - retry-time: 60 retries: 1, Error_code: 2005 This was after attempting to do a change master to...
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