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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Data synchronization across multiple databases

I have a Django application which uses PostgreSQL as a database. The application stores hierarchical data. It is like a warehouse management system with multiple branches and hierarchy. The current ...
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23 views

Replicate update statement as Insert in Mysql 5.6

I want to replicate all update statement from Master as a Insert at slave end. 1. Is it possible like in SQL Server ? 2 If so , how ? I want to do it because , if any record on master is ...
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37 views

Manual sql failover machine with replication

I hope this is the correct place to ask this question. We recently experienced one of our virtual machines being offline for 3 days due to issues in the data center hosting it. This quickly brought us ...
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1answer
38 views

Bidirectional Replication Push and Pull with SQL Server

Please bear with me, I'm a developer working with a client without access to a strong DBA. I have a question about bi-directional replication with the following setup and requirements: MSSQL Server ...
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48 views

Master/Slave and Master/Master replication - MySQL

What is the difference between having a master-slave replication and having a master-master( where in the second master acting as hot-standby - active-passive) replication? Also, what are the issues ...
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34 views

Why does adding a transactional replication publication change all the tables and columns to “not for replication”?

I'm trying to get replication set up - this is my first time ever doing it, so I'm probably making some rookie mistake here. Right now I'm just working in the dev environment. I've been following the ...
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37 views

MYSQL 5.6 replication occasional Lag

We use Mixed replication in RDS mysql 5.6 and we are noticing replication lag every few minutes or so, the lag appears momentarily and then disappears. On slaves when we do show processlist we saw ...
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18 views

MongoDB user account required for arbiter?

I have a test environment with two mongo v2.6.5 instances (#1, #2) and an arbiter instance in a replica set. I have a a common key file configured for all three instances. I have created an admin ...
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23 views

PostgreSQL Streaming Replication Tools - Windows

Is there any clusterware available for PostgreSQL clusters running on Windows OS? I'm specifically interested in automatic failover and STONITH functionality. I've done a fairly extensive Google ...
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1answer
16 views

MySQL - Enabling Scheduled Event on Master and Slave Simultaneously

This may seem a bit strange, but I am trying to get a Scheduled Event to execute on both Master and Slave. I have two databases set up in a Master (A) to Master (B) replication environment. Master A ...
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52 views

DatabaseRestart

I have strange problem, we are using circulation replication, between 2 different network with 5.6.25 and 5.6.22 version of MySQL and RAM is 64GB with 45GB innodb_buffer_pool Master Server is running ...
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27 views

What options exist for replicating SQL Server over the public internet

Specifically, I'd like to set up a reporting copy of a SQL Server 2012 transactional database. This primary runs in a managed services provider, and I want a copy in an AWS EC2 SQL Server instance. ...
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33 views

Setting up mysql replication (Master->Slave one direction)

I am struggling with the setup of a one way replication for a single mysql table. What I have done so far: Master: Added this into my my.cnf: server-id=5668439 log-bin=mysql-bin ...
3
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1answer
70 views

MongoDB: dbclient_rs replSetGetStatus failed{ ok: 0.0, errmsg: “unauthorized” }

When I'm using mongodump or mongorestore on a replica set these messages appear in the verbose output: dbclient_rs replSetGetStatus failed{ ok: 0.0, errmsg: "unauthorized" } The replica set is ...
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44 views

SQL Job Step created via wizard does not correctly set server & database_name values

I've recently been tasked with migrating a database from SQL Server 2005 to 2008R2. This has all been accomplished without any issues, but one part of the system requires a Snapshot Replication to be ...
4
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1answer
108 views

Column cannot be converted from type 'int' to type 'bigint(20) unsigned'?

I have a Percona MySQL cluster, with a master and a few slaves. Each of them is running "Ver 14.14 Distrib 5.5.40-36.1" of MySQL. Replication is row based. I ran an alter query on one of the tables ...
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26 views

Unicode character replication MSSQL to MYSQL in Symmetric DS

I'm doing replication from MSSQL to MYSQL using symmetricds and it is working fine. Now , the problem is: In the SQL Server table , I have a column defined as NVARCHAR(20) which accepts unicode ...
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25 views

Keep selected tables synchronized across MySQL databases

I've a need that requires me to keep a number of tables from a database (db1) synchronized with another database (db2). db1 & db2 have different structures and a set of tables and their data from ...
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3answers
51 views

What does MySQL mean by “Major Version”, and is MySQL replication supported between 5.1 and 5.6?

I am migrating from some MySQL 5.1 servers to MySQL 5.6 servers. The MySQL docs are a bit unclear if replication is supported between a 5.1 master and a 5.6 slave, and I'm a little confused what MySQL ...
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1answer
26 views

Deploying Shared MS Access DB — Summer Intern first time with Access

So to give a brief background I've got a summer internship and was asked to modify and add features to an already existing MS Access DB. I don't actually take databases until next semester, so I was ...
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13 views

Problem with replicate-rewrite-db not working [duplicate]

I have replication setup that has been working great. We have a master (prod) and a slave (reporting) that have been running for several weeks. We are changing the slave database through replication ...
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39 views

SQL Server 2012 replication setup on routed network

I'm trying to setup replication between two SQL Server 2012 instances. I set up a publication successfully on server1, but then I had a problem when trying to access it from server2, because the only ...
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1answer
51 views

Is it a bad practice to keep Master and Slave (Replica) Database on Same Server?

I have a database A (master) on server 1. I need to read from database A perform aggregations and write on database B. Since database A has a very high traffic, I cannot read directly from database A ...
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1answer
99 views

Why has my slave server stopped connecting to master in MySQL replication?

We have MySQL replication setup and it has been running without issue for some time. This server acts as a slave and a master (it replicates through to another server). This morning I received an ...
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1answer
39 views

Synchronizing 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 ...
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31 views

Can PostgreSQL with synchronous streaming replication get behind on the WAL logs?

I have 2 Postgres 9.4 servers running on 2 identical VMs that I am using to learn how to setup replication before it gets used in production. Hot standby isn't required but it would be preferred. I ...
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20 views

Mysql replication to empty db

I had a db master/slave setup that had hardware break on the slave. Now the server is backup I reinstalled mysql and setup replication the issue being backups are off. Is there a way to start mysql ...
3
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1answer
53 views

Introduce delay between master slave setup in MariaDB

We're using a master-slave solution using MariaDB 5.5.44. Is there a way to manually introduce a delay between the master and slave? I'm thinking of something like 1' or so. Is there a mysqld option ...
0
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1answer
97 views

Adding wiredtiger nodes to a non-wiredtiger replica set

Situation I have 3 nodes on a Replica Set (P+S+S). Mongodb version 2.6.9. I would like to migrate all the nodes to 3.0.4 wiredtiger. When I need to do that without downtime, I do the following ...
3
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1answer
133 views

Unable to shrink log file due to snapshot replication

Our database log (SQL Server 2008 R2) is growing too big, and truncating it via DBCC SHRINKFILE doesn't work (the database is set to simple recovery mode). A bit of background. I released some ...
1
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1answer
44 views

RDS Replication Error (Apply Error 1406 / Truncation)

I have a MySQL RDS instance as a master, created a Read Replica from it, and ran some schema change operations on it. To be specific, I changed the charset and collation of all the tables and columns ...
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1answer
32 views

how to convert a master cluster to a slave cluster?

I am learning about PostgreSQL streaming replication and so far I have learned how to create a slave cluster using: pg_basebackup -x -R -D main -h host -p port I also have learned that I can ...
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1answer
43 views

mysql replication and innodb_file_per_table

Is it possible for the master (5.1) to have innodb_file_per_table = 0 and for the slave (5.1 or 5.5) to have innodb_file_per_table = 1 ?
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36 views

How to Upgrade Master Slave MySQL on AWS RDS?

I already have Master Slave configuration on AWS RDS. We want to upgrade 5.5 to 5.6.23. ..What should be correct sequence to Upgrade ? 1. Upgrade Master ( Using Modify Instance ) --> Upgrade Slave 2. ...
3
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1answer
163 views

Indexes on Slave

I already have a my system with Master-Slave replication. I have started using Slave for data fetching. So, I need to create some extra indexes on Slave.[Not In master - however be informed that the ...
3
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1answer
94 views

MySQL 5.5 to RDS 5.6 Replication Error

I am facing following error and unable to fix it. So far I have disabled binlog checksum on the RDS. [Warning] Slave I/O: Notifying master by SET @master_binlog_checksum= @@global.binlog_checksum ...
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2answers
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Hyper V replication - vs - sql replication solutions

I need to establish an offsite copy of a number of production servers, including SQL server. Hyper V replication has been chosen as a simple solution (all servers are virtual). This is to supplement ...
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1answer
74 views

MySQL RDS Error 1062

Normally we can skip 1062 duplicate error but in rds can we skip multiple 1062 errors in one go. For example we define slave skip error =1062 in my.cnf and restart slave. but in RDS MYSQL how can we ...
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Removing Replication from MS Access mdb file using External Data->Access, is anything lost?

The new version of MS-Access 365 does not support replication as evidenced by the following error message: "The current version of Microsoft Access does not support replicated databases. To use ...
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45 views

Multi Source replication on single slave having multiple instances MySQL

i had 1 instance of mysql 5.6 on one server A (Slave S) 1 Mysql installed on server B ( Master M1) 1 MySql installed on server C ( Master M2 ) At Slave end : I have created one more instance by ...
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Amazon RDS Read Replica

I would like to know, is the Read Replica is nothing but the slave server, where only reads are there. I created two mysql instances in amazon RDS, one is Read Master, and another is Read Replica. ...
0
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1answer
39 views

BCP - Different Schema

I have a transactional Replication (Non-SQL Server Publishers - Oracle) implemented for one SQL Server Database. Let's say Publishers: A, B Subscriber: C Note: I can not modify the Oracle DBs. The ...
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1answer
55 views

New Master-Master replication has stopped working

We're building a new MySQL server pair for high availability, and of course it's not like managing a single server. We're working with Ubuntu 14.04 LTS and MySQL 5.5.43 I had master-master ...
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43 views

How to verify replication data integrity in SQL Server when using external replication engine

I am looking for a way to verify that data I am replicating between SQL Server databases is making it to the destination OK. Data is being replicated using an external replication engine, no built-in ...
0
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3answers
120 views

Merge replication throws PRIMARY KEY violation during the initialization of Subscriber

I am using SQL Server 2014 SP1 to set up merge replication on Windows 2008. The databases (Publisher & Subscriber) are restored from the production back up of SQL Server 2005 publisher database. ...
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mysql 5.5 statement based to rds mysql mixed replication

I am moving to rds mysql 5.6 that has by default mixed replication. I am moving from 5.5 where I have statement based replication. I was wondering if i enable replication between them i.e make rds ...
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Replication Conflict tables in SQL Server 2000

Due to previous several replications during these years in a database I'm working with, there are several tables with names with this format : *onflict_AllData_[Tablename] which * can be a, b, ... ...
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59 views

Unable to create replica set for MongoDB in Linux

When I run the following command: rs.initiate(), I get the following error: "info2" : "no configuration explicitly specified -- making one", "me" : "ip-10-0-2-113:27017", "ok" : 0, ...
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2answers
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Replication with two publishers [duplicate]

I have three servers with own databases, and database schemas are same. Let's call them servers A, B and C. All three servers will be operational, which means that all three servers will serve for ...
0
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1answer
28 views

PostgreSQL 8.4 replication of more than 100 tables

I am facing a problem with PostgreSQL version 8.4. I need to create an slave machine but when I look to all tutorials of slony or londsite its saying I will need to specify the tables that I want to ...