Replication is the process of sharing any level of information so as to ensure consistency between redundant hardware/software resources to improve reliability, fault-tolerance, and accessibility

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What User Level is needed for Transactional Replication

I've been setting up Transactional Replication between two database servers I have running. My first experiment with setting it up I simply used SA and local Admin account for all of the agents. ...
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Mongo db replication issue in 3.0.0

I updated my replica set from Mongo 32.6.4 to 3.0.0. After that i saw frequent switch between primary and secondary server. When i check the log i found this in log [ReplicationExecutor] replset: ...
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After restarting Mysql replication, Slave commands are executed

up vote 0 down vote favorite I have a Mysql Master Slave Replication which is working fine. Unfortunately I got some serious problems on my slave and the only chance I saw was to restart the whole ...
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Should I exclude mysql database from multi master replication?

Running mysql in a two master replication setup. There are many databases and they are all replicating correctly including the mysql database itself. Is it safe to replicate mysql or should I exclude ...
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36 views

Can I remove the middle slave in a MySQL “master -> slave -> slave” setup?

Let's say I have the following setup: Master -> Slave1 -> Slave2 I would like to remove the middle slave, Slave1, and have the following: Master -> Slave2 My gut is that I can do the following: ...
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59 views

Configuring 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 ...
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26 views

Why are foreign keys ignored on subscribers?

We have a merge replication set up on Sql Server 2008 R2. There are many tables with foreign keys providing a logical dependence on each other. For this question, let's say there are the "User" and ...
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118 views

Best database replication technique for a very unstable (power wise) network

I am part of a small network (500 users) who are all connect via WiMax to each other. The people connected to this network live in about a 70 km radius. This network allows for a transfer speed of ...
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145 views

Mongo db replication issue with 3.0.0

I updated my mongo instance to 3.0.0. Now i am seeing this error continuously in the replica set log 2015-03-12T15:24:23.141+0530 W NETWORK [ReplExecNetThread-74] Failed to connect to ...
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156 views

Which databases can meet these replication requirements?

I am doing research on database architectures for a large project, and I am looking for which software can meet my requirements. To try to explain the requirements simply: You have a master ...
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36 views

SQL Server Transactional replication - virtual box being the subscriber

I would like to ask if it is good practice to have the SQL Server transactional replication taking place from a physical box (publisher) to a virtual SQL Server (subscriber)? Regarding the ...
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44 views

Heavy load causing MySQL Slave threads to remain “locked” or “Sending data” indefinitely

We have been rapidly adding MySQL servers as slaves to our master database server to help alleviate a massive increase in search (read-only) traffic to our web service. This past week, I was tasked ...
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54 views

MySQL 5.6 Slave Stops Processing Binlog on Master Restart

I have a pair of Debian 7 servers with MySQL 5.6.23. The slave server is a clone of the master (but the uuid has been regenerated on the slave). For some reason, whenever MySQL is restarted on the ...
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407 views

SQL Server Cross Domain Transcational Replication

Has anyone got any documentation for doing/implementing Cross Domain SQL Server 2012/2008R2/2008 transactional replication document or steps (with screenshot or without screenshot) Thanks for your ...
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1answer
108 views

Continuous replication between Oracle Database and Microsoft Azure SQL [closed]

Background info: Our core ERP has it's data on Oracle. Our own applications are Microsoft SQL based. Almost every application reads data from this Oracle database and usually there is some sort of ...
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18 views

What if we skip the slave by counter 1 when it failed at event 1 of a transaction which has events 2 and 3

We have a master-slave replication which has all Innodb data. I ran 3 update statements under one transaction on master. ============= start transaction update T1 update T2 update T3 end ...
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196 views

How to restart the distributor agent of transactional replication?

After troubleshooting query time out error I would like to restart my distributor agent. So I go to my distributor server, in my distributor DB (called distribution_SA) I run the following query: ...
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56 views

Can we disable binary logging for one specific session or user in AWS RDS

Currently we have a situation to disable binary logging for one set of queries on AWS RDS. We thought to set log-bin=0 for that specific session. As per Amazon, this is not possible. Is there any work ...
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9 views

How many postgresql / BDR database can be replicated from a server? [duplicate]

I've been reading the postgresql bdr docs found here: https://wiki.postgresql.org/wiki/BDR_User_Guide I came across this comment in the above doc: BDR operates per-database, not per-cluster ...
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73 views

Oracle 11g xe replication/cluster free license?

I am new to db clustering/replication and I want to set up a cluster/replication of a database backed by t2 nodes. I used docker and spun up a preconfigured oracle 11g xe database ...
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70 views

Doubts 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 ...
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43 views

How to measure or estimate the streaming replication lag in Postgres 9.2

I've been asked to reverse engineer an app that uses postgresql in the back end. I can see that there is some database replica tion going on... based on my reading, I *think it's called streaming ...
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2k views

How do I configure multi master replication on WAMP?

I want to configure mysql multi master replication, but I've not seen any comprehensive article or tutorial on how to do that on WAMP. I will be grateful if some will point me to a tutorial, or ...
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471 views

Upgrading to MySQL 5.6, benefits to switching to GTID replication?

We have the most basic of MySQL replication setups, a single Master doing statement-based replication to a single Slave, a 90/10 mix of innodb/myisam tables. Both run Percona MySQL 5.5 at the moment ...
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260 views

“Uninitialized subscription” on replication monitor when creating a subscription on transactional replication [closed]

we have the same question here. However, that does not answer my question below. I'm using SQL Server 2012 and trying to implement transactional replication. I'm using the system stored procedures to ...
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Streaming Replication in PostgreSQL

I'm trying to set up two PostgreSQL servers on one machine and perform a streaming replication. I have succeeded once, but when i've tried again following exactly the same steps it doesn't work.. ...
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91 views

Postgresql - 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 ...
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42 views

Master/Slave desyncronisation

Some manual operations (writes) have been made on SLAVE instead of MASTER resulting in the replication being stopped. Could not execute Delete_rows_v1 event on table xxx.newsletter; Can't find ...
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41 views

Error while doing in replicaset in windows (mongodb)

I tried doing the replicatset in windows, but im getting the below error. I checked the mongo process and killed the existing process. Even though the error exists. help me on this pls Thx ...
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24 views

Replication broken after copying .frm .myd .myi files

I copied .frm .myd .myi files for MyISAM tables from old_prod server to new_prod. Then I did a mysqlcheck on DB and repair tables whenever necessary. All is good for MyISAM tables in the new_prod. ...
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35 views

what will happen to the binary log if it reaches its maximum value ? Does it reset to mysql-bin.00001 again?

what will happen to the binary log if it reaches its maximum value ? Does it reset to mysql-bin.00001 again ? I know the below points exist means, there won't be any reset happen in binlogs. I ...
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45 views

How to fix my Merge Replication upload order?

I have several Merge Replication instances in production on SQL 2008 R2. One of them has started to behave oddly in that it appears to attempting to upload the children tables before it uploads the ...
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103 views

MySQL 5.5 Replication to Galera/Percona XtraDB Cluster

We are currently investigating moving our current MySQL 5.5 Master > 5 x Slaves (with Statement Based Replication, apx 250GB data and growing) to a HA clustering option. Mainly to provide greater ...
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21 views

How to transform Streaming Replication Master-Slave to Cascaded Master-Slave1-Slave2 setup?

I've setup streaming replication as part of HA solution on my production enviroment. I've two ubuntu servers PROD1 and PROD2. PROD1 is master and PROD2 is slave. In case of failover the slave database ...
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135 views

FATAL: terminating walreceiver due to timeout

1/ DESCRIPTION: Machine 1 (slave): Centos 6.6 , x64 , installed PostgreSQL 9.3 (on Local) Machine 2 (master): Centos 6.6 , x64 , installed PostgreSQL 9.3 (on Cloud) Machine 1 (slave) and machine ...
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Impact of changing the DB compatibility level for a Published replicated DB from 90 to 100

I have a SQL Server 2008 R2 server with a bunch of published databases that are currently operating under compatibility level 90 (2005). The subscription databases are also SQL Server 2008 R2, ...
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592 views

MySQL slave taking too long on “Queueing master event to the relay log”

I have two mysql mysql slave servers. The DB version is: mysql> show variables like '%version%'; +-------------------------+-----------------------------------------------------+ | Variable_name ...
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14 views

What will happen when manager stops on source in goldengate?

As per my knowledge, manager is responsible for handshaking between source manager and target manager. Communication between the extract and pump process for providing reports Is there is a ...
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57 views

Failover_command in pgpool is not working?

I have setup the pgpool with load balancing and failover mode. Following is my failover_command='/usr/local/etc/failover.sh %d %P %H %R' The following is the script: !/bin/bash -x FALLING_NODE=$1 ...
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35 views

How does SIOS Data Keeper make consistent backups? [closed]

We are looking to change our DR solution to get our RTO and RPO as close to 0 as possible. We have around 80 databases on SQL Server 2012 sp2 that come to about 1TB in total including log files. I ...
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80 views

Can I change the default settings for SQL Server Replication

Is there a way to change the default setting in SQL Server replication? Example when I create an new article I want to have the create Non-Cluster set to true all the time.
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MySQL replication - how to read from slaves? manually?

MySQL Manual - Replication: "Scale-out solutions - spreading the load among multiple slaves to improve performance. In this environment, all writes and updates must take place on the master ...
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1answer
56 views

MySQL Replication Master Slave Architecture - Web app that is based on the SLAVE DB

We are developing a web application (Spring mvc based app) that uses a MySQL DB. (lets call it the "original app") The DB architecture uses a MASTER-SLAVE configuration with replication. The web app ...
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27 views

MySQL Replication, Can i add a trigger to the SLAVE db?

Is it possible to do so? The trigger will insert some rows into a unique table that exists only on the slave.
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8 views

How to handle private local databases in a multiDB cloud environment

In context of Platform as a Service (PaaS), we would like to offer our clients a private platform. A platform includes a website and a database. A platform is not 100% separated. Users could "travel" ...
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36 views

'accidentally' set 'CHANGE MASTER TO' on wrong server

while setting up the replication I accidentally did the 'CHANGE MASTER TO' on the master server instead the slave. When I noticed the mistake I just did a 'STOP SLAVE' on the master and setup the ...
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52 views

federated tables? synchronization? replication? [mysql]

I have a REMOTE suppliers table with, lets say, a code and a name, and several client databases will be creating new suppliers. Server database code | name ______________ 1 | Mark 2 | ...
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46 views

Mysql master master with high latency

We have a single master setup with many slaves in germany and some slaves in australia. To have faster writes in australia we want a master-master setup between germany and australia. Read slaves ...
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Transactional Replication to a Version Two Versions Older--Count by Name or Number?

According to Microsoft SQL Server documentation, a "Subscriber to a transactional publication can be any version within two versions of the Publisher version." In this context, are versions named ...
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463 views

Initializing Transactional Replication From two Different Database Backup

I have two different large Database (200GB for each) which I want to replicate their data to a central database (3rd DB). I followed this link and it was very useful for a single database. But my ...