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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Replicated timestamp column in different timezone

I have the master running Mysql 5.5.38 on Ubuntu 14.04 LTS. The timezone in the master is UTC+5:30. The slave is in AWS RDS which runs in UTC. The slave is primarily used for running for SQL queries ...
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1answer
53 views

FDW, replication and CREATE SERVER - will it work?

We have two servers (master, slave) and we want to use the FDW. The two databases to be connected with the FDW are both on the master (and the slave of course). When we are to CREATE SERVER we would ...
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33 views

How to do multi master replication on Database with Triggers in Oracle

I need advise on how to go about multi master replication on Database with Triggers in Oracle. i have "Database A" with Triggers on every transaction. need to have 2 more db's as hot standby,problem ...
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42 views

How many Slaves Can I to replicate with one Master Server with MySQL?

How many Slaves Can I to replicate with one Master Server with MySQL?, because I have a inconvenient, I have three servers that replicate a MySQL database. I've maked all the configurations and the ...
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1answer
583 views

Add database to existing replication which uses binlog_do_db?

We have two MySQL 5.5 servers running on Ubuntu 12.04. We are successfully replicating 3 databases from server01 to server02, but need to add a 4th (new) database. Our my.cnf on the master has: ...
3
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1answer
131 views

Is it mandatory to enable --log_slave_updates with MySQL Replication using GTID? [duplicate]

I'm setting up 5.6 Percona Mysql, in order to enable GTID should I have to enable log_slave_update on both Master and Slave ? If I should enable log_slave_update, then I'm counting this to CONS for ...
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1answer
32 views

Understanding pg-pool in details

I have following problem regarding the pg-pool (3.3.3) When master fails, automatic failover happens and standby is promoted to master. But this new master don't have any replicators. Other slave ...
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1answer
43 views

PostgreSQL replication with periodic log shipping

I'm using Windows Server 2008 R2 with 64-bit PostgreSQL 9.2 on both test machines. What I wish to achieve is that one server will be a master and other will be a slave. This is just for tests, finally ...
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1answer
205 views

Error 1236 From Master After Restored Replication

I've been trying to restore a broken replication caused by power interruption. upon checking the slaveDB, it was already broken so I setup a new replication. And upon supposedly completing the ...
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1answer
80 views

MySQL replication - slave hangs during ALTER table or BULK update - v5.1.71

We are facing the above mention issue. In this case if we try to STOP SLAVE then it hangs and we even can to restart DB. As I search in google for the same it looks like a bug. Id 38205 in V5.1. My ...
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1answer
233 views

Drop & re-add subscribers to transactional replication

I'm trying to get Stored Procedures to execute on the subscribers, as seems to be best practice. I already have transactional replication running happily. I add a new sproc, and set properties of ...
2
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1answer
91 views

MongoDB ReplicaSet reconfig when primary and majority don't exist

http://docs.mongodb.org/manual/tutorial/reconfigure-replica-set-with-unavailable-members/ Is there anyway to reconfigure a replica set in the event the primary as well as a majority of the servers ...
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0answers
48 views

Master and Read Only Oracle Database synch is unacceptable [closed]

Not a DBA, I am a developer, currently my team uses a Database set up created by the DBAs which we have little control over. All write's go to a master and then from there it is synched out to read ...
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1answer
25 views

MySQL table replication on the same server

I have one the same server (Linux) two databases: db1 and db2 and I want to replicate db1.table1 to db2.table1 I added the following lines to my.cnf and restarted mysql service replicate-do-table = ...
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41 views

Replicate/Sync Production database with Development database (no Master/Slave)

I currently use ClearDB MySQL DaaS for my production database, and a local MySQL database on my dev server for development. I need to have the production database replicated/copied/synced to the dev ...
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0answers
57 views

Replica failed with error mongo db

I am running mongo sharded cluster with two replica set as shards. One set is working fine but replica secondary on other replica set is not working. When ever i restart it it gives me this error and ...
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0answers
50 views

Domain name change of SQL servers involved in replication

I have a situation where client wants to change their domain name of servers hosting SQL Servers(e.g. from AB to CD). I have a transactional replication with updatable subscription configured with 1 ...
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2answers
32 views

MySQL replication - independent data update on slave

I have an unusual situation where I am migrating websites and their corresponding databases from one server to another. I have a database that is hosted on one server, A, where new records are ...
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1answer
64 views

What's the best solution for offline db syncing

I'm building a system which requires a master db (BIG master) that contains things like accounts, balances, actions, etc. This db then needs to be accessible at a physical place, like a fairground ...
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1answer
233 views

MySQL Replication: Seconds Behind Master super high

I've set up a slave db server for my production database, but when I checked the show slave status, I noticed a super big number in seconds behind master. This is the output: ...
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29 views

MySQL master/slave replication - replicate all tables

I am doing a master/slave replication, but getting errors about my tables does not exist. Is there not a way where i can make the whole table structure replicate aswell? Thought it did on default tbh. ...
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1answer
22 views

MySQL Replication Between Three Hosts?

We have a need to move our Moodle server to a different host, and our current host runs a LAMP stack that likely runs on a VM. It is accessed most of the time. In the event that the current host ...
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1answer
44 views

how to setup [master] - [master-slave] - [slave] mysql replication

i am trying to setup a mysql replication architacture between 3 mysql server. (by following some tuto like ...
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1answer
57 views

MySQL Delete Rows from Slave

I want to truncate the majority of data on a slave such that it only has the most recent records. I'll eventually demote the current master, making it a read-only archive, and promote the truncated ...
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2answers
53 views

sp_publication_validation procedure doesn't seem to work properly

I am trying to use sp_publication_validation stored procedure to validate that my replication setup is working correctly. This procedure is pretty straightforward and is described here. I am running ...
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31 views

Replication overview

My boss wants me to elaborate a comprehensive report about synchronisation/replication. I know that replication can be done with the DBMS (we are using SQL Server 2012), but he wants something manual ...
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1answer
52 views

Error 2003: Setting up MySQL Replication

Trying to setup MySQL Replication using this guide here : http://wpguru.co.uk/2013/05/how-to-setup-mysql-masterslave-replication-with-existing-data/ I was able to do this on two random VMs running the ...
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3answers
175 views

How to auto replicate specific columns only from a table in MySQL

I want to make one master DB which replicates specific user data into other databases such as: username pass (hashed) email pin (hashed) timezone (int) They are all in one table and running on ...
3
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1answer
124 views

timeline 2 of the primary does not match recovery target timeline 1

I want to create a configuration with postgresql and pgpool to get height availability (HA). I want to do this: .-----. .--------. | | W | DB | | APP ...
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1answer
32 views

Multi Replications Plan on 2 servers

I need some advice about our new database deployment plan. We have 6GB of total mysql data(all innoDB) and innoDB_buffer_pool is set to be 16GB Ans we have 2 database servers.(plus 1 server for the ...
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1answer
313 views

pt-table-checksum and row-based replication

The set up I work with is MySQL 5.5 in a master-slave replication configuration, but we have to use "MIXED" replication (statement and row-based) because we use an application that requires it, and it ...
2
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1answer
76 views

MySQL Replication - Master Master - Single Master write

I am looking to improve our fault tolerance for our persistent store. After reading several online docs about how to set-up master <> master replication, I'd still like to ask the experts about the ...
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1answer
49 views

PostgreSQL synchronous replication time out?

I'm using PostgreSQL 9.3 with synchronous replication. I have 2 synchronous replicators and 1 async replicator. My problem is when 2 synchronous replicators are down, transaction will wait ...
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30 views

Which primary keys must be specified when using slony PostgreSQL replication?

I'm extremely green when it comes to databases, so forgive my ignorance. I've been researching ways to replicate our production Postgres DB, and I've decided to try out Slony. Since the server is ...
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57 views

Understanding correct procedure to recover master in master-slave replication in PostgreSQL

For learning, I have setup master-slave streaming synchronous replication. Pg-pool 3.3.3 is installed in one VM and it connect to 4 VMs which runs PostgreSQL 9.3, one master and 3 slaves. Replication ...
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1answer
39 views

Does PostgreSQL take time to start streaming replication after restart master?

I set streaming replication in postgresql 9.3. I have one master and 3 slaves and replication works fine. But when i restart the master server and login using postgres database, pg_stat_replication ...
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1answer
38 views

Consistent backup of large DB --single-transaction

I need to mysqldump a large DB (330 GB) in order to set up a slave for replication. Does --single-transaction allow me to dump the entire DB without shutting mysql down and keeping it down for the ...
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1answer
35 views

How Much Resources Does the BLACKHOLE Storage Engine Consume?

I'm going to add a MySQL Relay Slave which use BLACKHOLE Storage Engine. The relay slave will just filter some databases binlog to downstream slave. Our MySQL Master generates about 15G a day in ...
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1answer
50 views

Postgresql 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 from ...
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1answer
69 views

MySQL Replication Lag Almost 23 Hours

I came into a new environment where the production DB was running on MySQL 4. Replication is usually about an hour behind but in the last few days it has been well over 24 hours behind. I'm not ...
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100 views

Subscription fails with Incorrect syntax near '9'

In my Distributor To Subscriber History I get the following error: Command attempted: 9 (Transaction sequence number: 0x0018E94F0000207A006200000000, Command ID: 59) Error messages: ...
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2answers
398 views

SHOW SLAVE HOSTS shows incorrect output

I had used --report-host option in one of my slaves, so that I could see that under SHOW SLAVE HOSTS. Now that server is no longer in use. I have uninstalled that server as well. Unfortunately I still ...
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0answers
75 views

mongodb replicaset

I am adding a new member in ReplicaSet and it starts initial sync bur after certain point sync break and start resync again.this process continue and never complete its initial sync.so please resolve ...
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0answers
43 views

Bucardo status does not feel if the slave is down

I am using bucardo as third party to postgresql replication between two sites. everything ok except buacrdo status <sync_name>. I have a Master-slave sync on master server. when I poweroff the ...
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1answer
305 views

MySQL asynchronous multi master replication conflict resolution

I have setup Multi Master replication, following this blog thread: http://0wned.it/geek-bits/guides/mysql-multi-master-replication/ And now it synchronizes perfectly, up until the moment the ...
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0answers
139 views

Looking for a good 3rd party Microsoft SQL replication app! [closed]

We have an existing Microsoft 2008 SQL R2 database that we need to real time replicate to an identical off-site live web database. Transactional replication and merge replication will not be able to ...
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1answer
95 views

Read Replicas with multiple instances of MySQL running on different ports

I have a specific need to create a single linux server which can host 4 MySQL instances with read replication. Here are a few questions I cannot seem to find answers to: Can you setup read ...
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0answers
253 views

Is there a way to replicate Postgres databases in Amazon RDS between regions?

We have a Postgres RDS instance in the AWS Oregon Region. For some supposed legal reasons, we have to host our client's European data in the Ireland AWS Region, but we need that data synchronized to ...
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1answer
74 views

Centralized master data shared among other several DBs

I'm researching and investigating about all possible ways to create a master data database for my portfolio of applications. To give you a quick overview, an example will come in handy: I want to ...
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0answers
15 views

MySQL - HOWTO speed up slave replication on large database / Quickly spawn slave? [duplicate]

We have a large mysql database (about 100GB on disk) that we would like to spawn a slave for. Our typical process for creating a slave is: Create a slave server Load in a mysql dump of the master ...