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

learn more… | top users | synonyms

6
votes
1answer
1k views

Is PostgreSQL replication production ready?

How does PostgreSQL native replication compare to MySQL? I know asynchronous replication has been supported for longer than sync, which is recent. Is synchronous reliable to be used in real projects? ...
0
votes
0answers
32 views

Create replication sql server for DWH [closed]

I have a DWH and I need to make an update once a day from STG Database to DWH I need use replication in SQL SERVER, How I do this?
0
votes
0answers
38 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 ...
0
votes
1answer
96 views

Is it possible to recover from a LOST_EVENTS incident from an RDS read replica?

I was setting up a read replica of an RDS database for a reporting project, and issued an incorrect GRANT statement when configuring a user. My RDS read replica stopped, with an error message on the ...
3
votes
1answer
156 views

MySQL multi-source replication with identical DB names

How can I set up a multi-source master/slave relation with masters having the same database names? I am using the MySQL labs 5.7.2 release with multi-source replication. One of the use cases for ...
0
votes
1answer
251 views

How do I fix Replication event checksum verification failed while reading from network. Error_code: 1743

Our server had disk space problems. As a result, replication's IO Threads fails to start. Here are the errors in mysql error log: [Note] Slave I/O thread: connected to master ...
1
vote
1answer
37 views

Preparing a former master to run as slave again

I have a streaming replication setup using postgresql 9.3. I have two servers, the master (server_1) and the slave (server_2). The other day I did a failover to my slave (server_2). Now server_2 has ...
4
votes
1answer
208 views

How do I monitor PostgreSQL WAL shipping if I'm not using streaming replication?

We have a fairly simple setup to replicate from our on-premise master PostgreSQL database to our presentation tier in AWS. We're using WAL shipping using the archive_command setting. Basically the ...
0
votes
1answer
58 views

Single MySQL DB contains both push and pull data. Recommended path to replication?

We have a single deployed (MySQL) database that contains both user tables and product tables (currently in the same DB). The product tables are "pushed to production" data -- they are generated in ...
0
votes
2answers
74 views

MySQL Master <=(Slave,Master)=> Slave configuration

Sorry for the wonky title if it got you confused. I want to know if a server can be a slave and master at the same time. Our problem is that we have lots of mobile units that need to be synced to the ...
0
votes
0answers
66 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, ...
1
vote
1answer
69 views

What synchronizes two delayed replicas, which is part of the replica set, included in sharded cluster?

Please take a look at my mongodb map at http://postimg.org/image/krzvmep4d/ What synchronizes two delayed replicas, which is part of the replica set, included in sharded cluster? How can I use my ...
0
votes
0answers
154 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 ...
1
vote
1answer
41 views

Is it possible to have mysql treat row based updates as “upserts”?

When processing row based replication events, mysql replication will break if it's unable to find a row matching the "before image". Is there any setting to tell mysql, if you don't find that row, ...
0
votes
0answers
23 views

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 ...
1
vote
1answer
35 views

How to resynchronize replication for a single database

I have two MySQL 5.5 servers in a master/slave replication setup. The server hosts about 10,000 databases, but the replication is messed up for only a couple of databases. To fix the replication I ...
0
votes
3answers
114 views

Changing MySQL auto_increment_offset

Sorry for the wall of text, but I don't know what's relevant and what's not. I have MySQL a MySQL database that it is being replicated from our production environment to our development/test ...
0
votes
0answers
38 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 ...
2
votes
1answer
71 views

Mysql Master-Master with additional slaves

We have two datacenters with a copy of our web app (online training platform) at each. The primary datacenter receives all of the traffic at any given time and the second datacenter serves as a ...
1
vote
0answers
96 views

Master and slave tables with different character sets - will replication break?

We have some huge tables in our MySQL 5.6 database that have latin-1 as their character set, and want to convert them all to UTF-8 (along with converting the database's global character set). The ...
0
votes
0answers
62 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 ...
1
vote
2answers
168 views

2012 Transactional replication not delivering new articles

I have added a new article to an existing push publication with the following code sp_addarticle @publication='statics', article='FlightBaggageMarkup_tbl',source_object='FlightBaggageMarkup_tbl' ...
2
votes
1answer
8k views

MySQL: InnoDB keeps crashing - how to recover?

# free -m total used free shared buffers cached Mem: 48289 35288 13000 0 347 30399 -/+ buffers/cache: 4541 43747 ...
3
votes
2answers
281 views

Replicating some tables from one postgres database to another

I've got the following situation: I have three machines running postgresql databases. One machine holds client account information (call this machine C), the other two machines hold client logging ...
1
vote
1answer
64 views

Is it possible to archive table rows of an RDS read replica?

I would just like to know if I can purge 60 days old rows from a replica. Would the replica just copy the rows again from the master after deleting the rows? Because what I would really like to do is ...
1
vote
1answer
94 views

Native checksum table says there's a difference, pt-table-checksum does not

I was setting up a slave and doing some table checksums to check things were ok before getting them live. I did a native mysql checksum tables on the slaves after syncing slaving to a stopped point ...
0
votes
1answer
63 views

fixing mySQL replication (large DB)

I have a large mySQL database and I am replicating to two slaves. All three servers are windows (i know). One of my slaves seems to have corruption, the other is fine. This is huge DB, a few ...
0
votes
1answer
31 views

Merge replication parameterised filters

We are looking at using merge replication to maintain a 2-way data flow between a central SQL Server 2012 Standard database and, eventually, 100's of international satellite SQL Express 2012 ...
3
votes
2answers
124 views

How can streaming replication be kept lagged by a certain 'delay' time?

Postgres has had streaming replication since 9.0 and since 9.1 it is possible to pause and resume the application of the streamed WAL records using pg_xlog_replay_pause() and pg_xlog_replay_resume(). ...
0
votes
0answers
53 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 ...
2
votes
3answers
1k views

Replicating only significant records to specific database

I have a remote database which holds data for various databases in various locations. I want to do database replication, but only data specific to a certain database should be replicated to it. I can ...
4
votes
1answer
1k views

How to configure replication from PostgreSQL (RDS) to vanilla PostgreSQL?

I have an Amazon RDS Postgres DB and I created a "replicator" user and granted it the "replication" privilege. db=> create role replicator login password 'something'; CREATE ROLE db=> alter ...
1
vote
2answers
140 views

Multi-master + slaves replication in MySQL

I've been playing around with MySQL and tried to create replication topology according to the following picture. Slaves are used as read servers and Masters are used as both read and write servers. ...
0
votes
0answers
13 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 ...
0
votes
0answers
51 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 ...
0
votes
0answers
35 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 ...
1
vote
1answer
102 views

Heartbeat Options with MySQL and Possibilities

I would like to understand if the following scenarios are possible in Heartbeat in Linux. Setup: Two Database Servers running Mysql in Active/Passive mode in replication mode having Heartbeat setup ...
2
votes
1answer
99 views

Is it possible to replicate wide table in MS SQL?

The reason of me using sparse columns is to overcome limit of 1024 columns in a table (I know that generally it's not a good reason and there are downsides, but in my situation it's good option ...
0
votes
1answer
420 views

How do I (safely) kill long running operations in MongoDB?

Occasionally operations get out of control in MongoDB and might end up running for hundreds of seconds, and impact performance until they are killed or completed. When that happens, I know I have ...
2
votes
2answers
360 views

Streaming Replication Log is puzzling me

I have a streaming replication hot-standby setup, which seems to be running all good. I can login, execute selects and the result seems to be up-to-date with the master. However in the log of the ...
3
votes
1answer
230 views

With SQL transactional replication, does changing user permissions to a table trigger a new snapshot?

I was hoping to get some help with a SQL Server 2012 transactional replication scenario - or maybe just my understanding of where permissions are stored in SQL server. If I change a users permissions ...
0
votes
0answers
69 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. ...
-1
votes
1answer
78 views

MySQL Replication

i try to search around the internet to find out what's a "Master -> Slave" Replication of MySQL want to do? Can sombardey maby explain it for me? what i can read is what happen are when i have a ...
2
votes
2answers
61 views

Replication between SQL Server 2005 - 2005

I'm hoping to get some help with a SQL Server 2005 replication issue. In short, in replication monitor, (On the Publisher), on the 'Distributor to Subscriber History' tab, I see two lines under ...
1
vote
0answers
25 views

The @article parameter value must be 'all' for immediate_sync publications

I have a publication of 4 tables and many subscribers (transactional push replication), most of them being interested by one of those 4 tables. Everything is working fine as long as I create the ...
0
votes
0answers
151 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 ...
0
votes
1answer
294 views

Streaming replication between postgresql 9.2 and 9.3

Does anyone know if it's problematic to have a postgresql 9.3 slave setup to do streaming replication from a postgresql 9.2 master?
8
votes
1answer
424 views

Initializing Transactional Replication From Backup

There is an option when setting up a publication for replication to Allow Initialization From Backup. We have been creating replicated databases for several years now and have always initialized from ...
1
vote
1answer
50 views

Master-master database replication on 5 servers

My current project requires immediate replication between 5 databases. Servers are physically distributed across the globe. Currently we use Redis with one master server installed on another 6th ...
0
votes
0answers
35 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 ...