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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MySQL replication backup

How to take MySQL Master-Master and Master-Slave replication backup?. I have setup Master-Master replication with a separate slave for each master on Ubuntu. What happens if, I issue or schedule ...
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How to use Select query just right after Insert on master in a query.?

I have a question on mysql replication. As usual, I deployed my db structure like the Update on master db, the select on slave. My questions. If I use SELECT query just right after INSERT in a query, ...
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21 views

SQL Server DTC: is it possible to automatically replicate data that is created on Oracle DB?

I have a SQL server with a table that is spec'd exactly like a table in an Oracle database. What I would like to do is automatically copy the data from the Oracle table to the SQL server table... Is ...
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14 views

Performance : MySQL replication or only one big server?

I'm searching about the best choice. We have to host a website with 10.000 - 20.000 visitors per day actually, growing. At the beginning, which would be the best : Having 2 MySQL servers (12 GB ...
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24 views

SQL Server Replication Monitor Throwing “Specified cast is not valid. (ReplicationMonitor)” Error

The publisher is running SQL Server 2008 R2 on a Server 2008 R2 box. The subscriber is running SQL Server 2012 on a Server 2012 box. I have tried launching the replication monitor from both servers ...
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Replication failure after old domain controller shut down

We changed domains on our SQL Server 2008 R2 about 6 months ago with no issues while the old domain controller was still up. The old controller was taken down today and our replications started ...
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47 views

MongoDB Sharding and Replica Set Allocation

I am going to setup MongoDB cluster: 3 config servers, 3 routing servers, 2 shards (replica set per shard). A replica set is just simply 1 primary, 1 secondary and 1 arbiter. Therefore, in my ...
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15 views

Is there a way to synchronise 2 postgresql server that may be deconnected and modified?

I would like to know if there is a way to use a cluster / replication mecanism that can manager deconnection and modification while deconnected. Say I have server A and B, they see each over, cluster ...
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24 views

MySQL Replication with Tungsten

I am trying to setup a multi-master type of replication with each master having an additional slave using tungsten. As an example, lets say I have 4 hosts (A,B,C,D) and Hosts A and C are the Masters, ...
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45 views

MySQL 5.1 replication broken after crash, duplicate key error, why? No redo log corruption

What do you think is the reason for the duplicated key errors in our MySQL 5.1.61 replication slave, after the slave machine crashed? It's not corrupted redo logs. Details follows: We have ...
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How to Replicate data from read only sql database to Active one

We are applying logs in every 30 min to one SQL db which has to be in Restoration Mode/Read only mode as we are applying logs continuously. Now we have to Set up Replicaion of this Read only Db to ...
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19 views

Mysql: Add a slave to an already existing Master-Master setup

We already have a Master-Master MySQL setup running live in the network. Now we are asked to add a slave to the setup. Is it feasible. If yes, what's the steps I need to follow. Also what are the ...
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21 views

MYSQL 5.5 SERVER MULTI MASTER REPLICATION

Myself using mysql 5.5 in master side and in slave side(remote connection) It seems the configuration like log_bin,binlog_do_db are correct but it shows Slave_Io_Running : Connecting ...
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40 views

SQL Server 2008 replication and large data updates

We have an environment setup where we're replicating a single SQL database to 14 subscribers across relatively slow WAN links. The data at the distributor is refreshed once a day - where the tables ...
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8 views

DB2 bidirectional replication of federated object?

Bidirectional replication of a federated object - is this possible on DB2? Example: replication of a table on the DB2 and another table on MySQL as federated object inside of DB2. Anyone ...
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21 views

DB2 manual asynchrounous real-time replication to NON-DB2 database

I have been given a Proof-of-Concept task to find out whether it is possible to set up manual (=no 3rd party tools allowed) asynchrounous real-time replication in DB2 that replicates all data changes ...
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18 views

MySQL manual asynchrounous real-time replication to NON-MySQL database

I have been given a Proof-of-Concept task to find out whether it is possible to set up manual (No 3rd party tools allowed) asynchronous real-time replication in MySQL that replicates all data changes ...
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58 views

Mysql replication broke after mysql upgrade on master

I've seen this question, but I am not sure if the solution is right for my particular error (replication breaks after upgrading master) I upgrade my master server's mysql from 5.5.34 to 5.5.35. After ...
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29 views

Probable database replication issue in LAMP setup with Master/Master MySQL replication

I have been facing issues in my high availability failover (on WAN links) LAMP setup hosting a Drupal CMS based site, approximately after every 2 months both servers suddenly stop responding to http ...
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38 views

SQL Server 2012 Replication Initialisation Fails — Table keeps being dropped

I have two servers - one located in Australia (Distributor / Publisher), and a second in the UK (Subscriber) both on Amazon's cloud. I have attempted to configure replication as both pull and push ...
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49 views

Redis Master/Master or Shared Storage

I'm setting up Active/Passive Redis setup for a client of mine. I have a high performance NFS storage where I'm storing the configs and the data currently. I'm just wondering if it would be best to ...
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20 views

On replicating all tables of a given database except for those starting with some pattern

I'd like a slave to replicate all tables of a given database except for those starting with some pattern, eg. those with names starting with 'nc' (non-critical, redundant denormalized tables). So I ...
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17 views

Upgrade 2 servers with master-master replication without data loss

We have two MySQL servers running with master-master replication in a Pacemaker cluster. If a database operation should be done, the primary server is asked first to do the job, if it fails, the ...
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48 views

SQL Server 2012 Transactional Replication Issue — Table Data not updating at subscriber

In my projects we configured Transactional Replication for my Database - one publisher, one distributor and two subscribers For 2nd subscriber every table data is updating properly But for 1st ...
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20 views

How to efficiently synchronize MySQL slave with secondary mater?

I have a database setup with chained replication: +-----------+ +-----------------+ +----------+ | A: master | <-- | B: slave/master | <-- | C: slave | +-----------+ ...
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30 views

“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 ...
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34 views

Ways to monitor Replication messages in SQL Server 2012

I have a question for the Replication gurus here. Replication is a massive evil (but absolutely necessary) in my company. What are the various ways to monitor replication performance. I know viewing ...
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47 views

Fast-Failover in Mysql

I need experts suggestion on this. I see fast-failover option is available from Mysql 5.6.5 onwards. I have a requirement asking to go for Mysql auto-failover of vip and database within Mysql itself. ...
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24 views

Error in configuration sql server replication

I am configuring replication for a sql server 2005 on win server 2003. I get this error: TITLE: New Publication Wizard SQL Server could not configure 'aaaa' as a Distributor. ...
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12 views

mysql safe mode running caused replication failure

I have been using database replication (Master-Master) in two of my server's running Mysql over Ubuntu 12.04 LTS server edition. I had to reset the database root user password of one of the server ...
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50 views

Replication Monitor Missing Subscriptions in Watch List

In Replication Monitor, for one of our publications (transactional replication), none of the subscriptions are showing up in the Subscription Watch List. This is new behavior that just started ...
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90 views

Slave fail first due to duplicate primary key then corruption error

I have a mysql db running the slave very well for few months. Suddenly today I notice it stopped since 18Nov. I check the status it was showing me the primary key duplication error. SO i stop slave ...
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908 views

MySQL relay log corrupted, how do I fix it? Tried but failed

A MySQL v5.1.61 relay got corrupted when the machine suddenly shut down. I tried to fix it but it didn't work. — How do I fix it? Did I do something wrong? As far as I've read, corrupted MySQL relay ...
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24 views

log-slave-updates doesn't write in relay bin with replication-ignore-table option

Here my MySQL circular replication : db1 -----> db2 -------> db3 ignore table db2.t1 db1, 2 and 3 are the same database. db2 ignore t1 table. (replication-ignore-table) Every server has ...
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34 views

Create extra databases on a MySQL slave (RDS)

Is there any trouble I can get into with switching off read-only on an MySQL slave (on Amazon RDS), and adding a few extra databases for unrelated use? While we need a read replica for ...
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78 views

MySQL Slave with erratic Read_Master_Log_Pos during binlog rotation?

I have two mysql servers setup with default my.cnf config apart from server-id's and enabling binlogs on masters. Replication is setup and working and i have a simple bash scrip on master feeding in ...
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48 views

Merge replication web sync pull error

I have some problems with web synchronization for the Merge Replication. I repeated every step described here but I have always the same error: Security Error ....Unable to connect to the URL ...
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36 views

PostgreSQL Failover Issue

I have 3 PostgreSQL (9.1) server's, 1 master and 2 slave. I have configured streaming replication between them. Now when i shutdown the primary server and convert one of the slave to act as primary ( ...
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28 views

Accessing Database from Slave server

I have an application running in one server eg: My Server's Ip is 192.168.10.10, and I have the MySQL database server in the same machine. The application connects database server as localhost. ...
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33 views

Central publisher with two subscribers merge replication

Scenario: I am (not very professional) a DB admin of a company located in CityA with two branches in CityB and CityC. Their working hours are from 8 AM to 5 PM. The boss is working in CityA and wants ...
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104 views

Adding a replication article manually & failing to generate new replication sprocs

I've got a large number of articles I need to add to a new replication transactional publication in a dynamic fashion, but appear to be running into an error every time I switch replication on. ...
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184 views

Create a high availability cluster configuration PostgreSQL for Windows

I want a server to be replicated, here is the scenario: When my primary server goes down or fail I want the secondary or the standby server to take over, I'm using Windows 7 for the primary server, ...
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70 views

After subscribing to a replication set, why can't I see the replicated tables on the local database?

I'm pretty new to databases in general (about two weeks), but I'm learning fast. If I'm using the wrong terminology anywhere, let me know in the comments. Bear with me. :) Background The company I ...
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45 views

Is using “read-committed” isolation level save on *slave*?

I saw a few articles which discuss how different transaction isolation levels affect replication. If I understand properly, all these related to transaction isolation settings on master, not on slave. ...
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84 views

MYSQL replication not working with connector but works VIA phpmyadmin

I have setup a MYSQL replication, and have tested the replication by using phpmyadmin. On all occasions when using phpmyadmin, the data was being replicated successfully. But when records are ...
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137 views

MySQL slave doesn't reconnect to master after master is rebooted

I've got a new MySQL replication setup with one master and one slave. In all of the following scenarios, the slave automatically reconnects to the master and resumes replication where it left off: ...
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398 views

What can I do to repair a corrupted partitioned table on the slave?

mysql Ver 14.14 Distrib 5.5.31, for Linux (x86_64) using readline 5.1 The slave has been stopped due to power outage: Master_Log_File: mysql-bin.000491 ...
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166 views

setup mysql row-based-replication without downtime?

Is it possible to use setup rbr on a mysql server (current version happens to be 5.5.31) to a slave without incurring downtime? (and if "yes", how?) My thought is first to configure the master and ...
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170 views

MySQL multi master replication with bi-directional synchronization advice

I need a solution to replicate data between multiple MySQL masters running on different platforms (Windows XP, 7 and Ubuntu Linux). I have found a replication tool (SymmetricDS) which supports this ...
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31 views

PostgresPlus advanced server replication testing issue

I made the replication on my Windows Server 2003 system as master DB and another XP system for slave DB. I just made the configuration, but I don't know how to check the replication of database. I ...