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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SQL Server 2012 Replication

Please help me out with a problem I am facing. I have a table T. I altered the table to alter the column C from varchar (10) to varchar (100). Now, there is a view V that is schema bound and selects ...
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118 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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1answer
40 views

Moving large database to another drive, how to measure performance before, and setup some type of replication for fast fail back?

Sorry if this is kind of more than question at a time, but here goes. Running SQL Server 2008 on windows server 2008 as well. We have a large database just over 200gb right now (it holds images of ...
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1answer
53 views

Changes to main Database during Transactional Replication

Can you please advise how can I keep slave database up to date while it's in transactional replication with master. I mean what If I change indexes, columns, tables or sthm else in master dabase? ...
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1answer
92 views

How do Identity Columns get Replicated?

During Transactional Replication, we have data going from Server A to Server B. Say we were to reseed an Identity Column on a Table on Server A (for whatever reason), how would this affect the data ...
4
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1answer
736 views

What are the drawbacks of using Galera Cluster instead of Master/Slave Replication?

What are the drawbacks of using Galera Cluster instead of regular Master/Slave Replication? Galera's 0 slave lag time, Synchronous replication and no Single point of failure seem very appealing then ...
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1answer
94 views

Max allowed packet changed still replication not starting

Suddenly I notice my replication stopped and first I got some primary key duplication error when I checked using the show slave status\G. Then I remove those lines and restarted and ending up now with ...
5
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3answers
792 views

Using SQL Snapshot Replication to refresh TEST databases from PRODUCTION. Why not?

What are the drawbacks and downsides? We want to schedule automatic nightly refreshes of 20 databases, approximately 1GB each, from the PRODUCTION server to the TEST server. We're setting up SQL ...
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2answers
238 views

What locking can I expect with DBCC CHECKIDENT(RESEED)

I'm working on a project that has hit a bit of a snag: I'm replacing some replication with a home built system so that if replication goes down we don't blow our SLAs with our customers and shell out ...
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1answer
76 views

SQL Server 2000 Replication, Performance, and Query Priorities

I'm a developer and wanting to confirm the following: Does anyone here have experience with SQL Server Replication (transactional) on 2000? We are trying to convince the DBAs to allow this in a ...
3
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1answer
130 views

How to upgrade MySQL (5.5) production DB to 5.6 with minimal downtime

Our existing Database size around 200GB. We want to use consistent, parallel backups methods. For testing, I migrated my Development DB from 5.5 to 5.6 by running mysqldump with option ...
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105 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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1answer
242 views

exception: hosts cannot switch between localhost and hostname

I created a replication set. I added localhost in the set in the beginning, but when I try to edit the member with the actual hostname. I get error "exception: hosts cannot switch between localhost ...
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1answer
202 views

Can we use old primary to sync with standby after failover in PostgreSQL?

If my standby (postgres) is behind by few seconds before failover. What is the easiest way to sync back my old primary after failover in PostgreSQL. In Oracle we have the option of Reinstating a ...
0
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1answer
74 views

Is it any good for performance to have master and slave on the same server

There are similar questions on this site, but they mostly cover server failure and data backup aspects. I'm concerned only as far as query performance. If master and slave share the same resources, ...
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1answer
79 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 ...
0
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1answer
3k 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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1answer
180 views

Backing up MySQL w/MyISAM on Amazon RDS

So, for various good reasons, we're maintaining a mySQL database using a MyISAM engine on Amazon RDS. I've just taken over this application, and I'm concerned we're not getting good backups, since ...
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1answer
239 views

MySQL Master Slave Replication and backup

I would like to implement the following backup solution as highlgihted on the mysql site: To use replication as a backup solution, replicate data from the master to a slave, and then back up the ...
2
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1answer
910 views

Cannot get my slave - replication server to start

My replication server will not start. I have followed the instructions here: http://opensourcedbms.com/dbms/setup-replication-with-postgres-9-2-on-centos-6redhat-el6fedora/ As well as several other ...
2
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0answers
94 views

Replication slave re-reading WAL on restart

I have a standard streaming replication setup going with PostgreSQL 9.1. It works fine. However, if I stop the slave cleanly (to move it or perform other maintenance) and restart it a short time ...
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0answers
227 views

Log file growth due to replication issue

I have one primary database and it's getting replicated to another server. Both servers are SQL Server 2008 R2 with SP1. Replication was running fine till last week. We have transaction log backup ...
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1answer
241 views

Snapshotting Database Tables

I have a reporting database (in SQL Server) that takes nightly snapshots of the production data (Oracle) for users to query against for the next day, but now the requirement is getting to be that they ...
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1answer
143 views

Copy few rows from one database to another

I have two PostgreSQL databases on two different machines and the network connection is slow. I would like to copy few selected rows from the first instance to the second. Unfortunately, the full dump ...
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1answer
300 views

How can I keep two databases on different sites in sync?

I'm working on a web application that exists at two sites. Each system is hosted on it's own LAMP stack, with access restricted to specific users on the network. When content is updated via user ...
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1answer
52 views

CRC checkup in MongoDB

I am new to MongoDB and currently working on a project. I read tutorials but I'm unable to find any information about Cyclic Redundancy Check (CRC) in MongoDB. Is there any way to check that the data ...
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0answers
38 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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1answer
187 views

How to remove orphaned Log Reader Agents from Replication Monitor?

How do I remove the two Log Reader Agents with errors from the Replication Monitor? As you can see, the job does not exist (Error message produced by right click > Properties on errored Log Agent ...
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1answer
104 views

.NET error when trying to create snapshot for transactional Replication

I encountered a bizarre prob today while creating a transactional publication on a SQL 2012 server running on Windows Server 2008R2. I had just had some success creating and initializing some Merge ...
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37 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 ...
2
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3answers
2k views

Is replication possible on two different domains?

I am implementing a database replication between different geograhical locations where each one is on a different domain. After going through all the process, when I start the agent it runs and stops. ...
0
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1answer
258 views

mariadb-galera-server with Aria?

With Galera now somewhat supporting MyISAM replication, does that also mean that it will replicate Aria databases with storage engine (which is more or less feature complete to MyISAM, and a drop in ...
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1answer
329 views

Approaches for Real time copy of database on same SQL Server instance

I have a draft of requirements that look like this: Production database should be copied in real-time to "Pre-prod" database The Pre-prod database should be available to read and update It should be ...
0
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1answer
35 views

Replicating MongoDB server on windows

I have a main server(windows-27017) and on that i replicated my data on different port (37017) but same server. Now i am trying to add my notebook as a replicate server on mongodb and installed ...
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1answer
2k views

Best Possible Solution for Reporting Mirroring or Replication?

Hi I have SQL SERVER 2008R2 Data Centre Edition and I use SSRS and a Vendor application for reporting. I have a Reporting Server where we backup and restore everyday from Live Server to have Data ...
4
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1answer
230 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
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1answer
76 views

re-enabling a table for mysql replication

We were able to setup mysql master-slave replication with the following version on both master/slave: mysqld Ver 5.5.28-29.1-log for Linux on x86_64 (Percona Server (GPL), Release 29.1) One day, ...
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1answer
70 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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94 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 ...
0
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1answer
321 views

Replication - Binary log parsing(Tableid generation, ON DELETE CASCADE handling, Changed columns for update event)

I am using MySQL 5.5 with InnoDB engine. I have set binlog format as row-based replication. I have some doubts regarding replication: 1) How is the tableID generated? Is it stored somewhere? 2) ...
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2answers
85 views

Postgres: What happens if your slave DB went down temporarily?

I have a master DB that is replicated to a slave DB through binary replication. What happens if this slave DB were to go offline for a period of time? Would it eventually catch up with the master as ...
0
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1answer
249 views

SQL Server replication - set PollingInterval in sp_addmergepushsubscription_agent

I am trying to create replication subscriptions to and SQL Server 2008 R2 via a script. There are 3 subscribers so this script creates the subscriptions by calling sp_addmergesubscription and then ...
0
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2answers
127 views

How to copy a table during replication in MySQL?

I have two MySQL servers; db1 and db2. db1 is production and db2 is for reporting. I have setup replication where db1 is master and db2 is slave. This current setup works fine. I was given a new ...
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5answers
2k views

Mirroring vs. Log Shipping

The software company I work for is planning to migrating our infrastructure into the cloud. Our current focus is to find the best database replication method. Current Servers: SQL Server 2008 SE - ...
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147 views

How to upgrade MySQL 5.0 to 5.5 with master-master replication?

I have to update 2 hosts with SUSE Linux Enterprise 11 from SP2 to SP3 which implies an update from MySQL 5.0.94 to 5.5.31. The release notes state: SLE 11 SP3 introduces the upgrade of the MySQL ...
0
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1answer
77 views

Replication with two side update but one side insert

I have server A and server B. I want server A can see data and changes on specific article on server B . But server B just see its own data . And also I want to update server B's data on both servers ...
0
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1answer
565 views

SQL Server Transactional Replication over Internet

I have 2 instances with SQL Server 2008R2 and i would like to build Transactional replication between those server, one is in the Local Network (Local_Instance) and the second server is over Internet ...
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1answer
80 views

Multi-master and multi slave

I have been having some issues creating a redundant multi master setup. Here's the proposed layout: The problem I'm having is when something is written to master1 it replicates to slave1 and ...
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1answer
111 views

MySQL: records, inserted via phpMyAdmin, do not replicate

As it says on the topic, for some reason records inserted/ modified via PMA do not get replicated to the slave, If I do exactly the same insert/modification on master via mysql command line, or ...
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1answer
366 views

SQL Server Data Transactional Replication of huge data, locking down table

We have setup data transactional replication from Server-A(SQL Server 2008 R2) to Server-B(SQL Server 2008 R2). We have a SQL Job scheduled to run everyday on Server-A, which executes single UPDATE ...