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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Where to look for Agent history in Replication?

In SQL server 2008R2 replication configuration, "agent history cleanup distribution" job by default runs every 10 minutes and deletes any historical data older the 48hrs. If I increase the retention ...
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325 views

SQL Server 2005 to 2012 Replication, cannot access replicated data

I have created publication (snapshot, small table with 10 rows) on MS SQL Server 2005. Then, I created push subscription on MS SQL Server 2012. When I try to select data form table, process takes ...
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How to troubleshoot, find and fix query Percona 5.6 with error “SQLSTATE[HY000]: General error: 1785 When @@GLOBAL.ENFORCE_GTID_CONSISTENCY = 1”

i'm running Magento CMS, and underneath there are 2 physical servers both with Percona Server version: 5.6.23-72.1-log Percona Server (GPL), Release 72.1, Revision 0503478 in Master/Slave ...
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634 views

How to generate replication snapshot without locking tables

When I reinitialize subscription and generate new snapshot it locks all tables and makes the database unusable for a very long time (never waited it out). Is there anyway to do this without locking?
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1answer
125 views

Mongodb replica sets: why does my master server occupy more disk space than my slave?

I have two servers on my replica set. Let's call it the master and the slave, for the purpose of this discussion. The master was the original one, and the slave was replicated from that master. At ...
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1answer
23 views

MySQL 5.6 Slaves Fail to Reconnect to older MySQL server when it goes down for backups

I have an existing replication setup with Masters and Slaves running MySQL 5.0. A long existing script runs at night which restarts MySQL on the master with skip-networking, runs a backup, and then ...
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4answers
13k views

Broken mysql replication on slave server (error 1236)

My question is: how to fix broken mysql replication on slave server (error 1236)? server 1 (192.168.1.105) server 2 (192.168.1.106) I ran these steps to re-sync: At the master - server 1 ...
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23 views

Replication Configuration

I had a SQL Server 2008 Express edition as a Default instance and I am having SQL Server 2012 Evolution and SQL Server 2014 Evolution are my named instances. When I was trying to configure ...
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2answers
39 views

migrate db's - best way to mirror or replicate a full database

I would like to mirror/replicate my databases to the cloud. The cloud is setup using VPN to my actual machine. I am a bit confused by the options I have and would like to get some light into it. My ...
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1answer
14 views

Run MySQL replication by schedule or on demand

I have a master-slave replication currently configured. I know this setup runs real time. Is it possible to sync only the databases on schedule (daily or weekly) or by demand? Thanks!
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106 views

MySQL - How to see the queries executing by slave io thread

We have a strange problem with MySQL replication. We have observed huge load and IO wait on server while replication is in progress. We can have information of the queries from bin-log by using ...
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1answer
441 views

SQL Server 2005 Replication

I am in the process of creating Replication between 2 Remote Servers, server 1 is the Distributor and Publisher and server 2 is the Subscription. server 1 windows 2003 server 192.168.10.1 connected ...
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1answer
527 views

mysql replication - missing table for foreign key on slave

i have the following situation: We're running a simple master slave replication with table filters, so the slaves doesn't have all the master tables. Master has table A with FK to table B Slave has ...
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0answers
20 views

Warm Standby PostgreSQL 9.4 error; FATAL: the database system is starting up [on hold]

I want to setup a Master and a warm standby, so far here's what I have setup: Master postgresql.conf listen_addresses = '*' wal_level = archive archive_mode = on archive_command = 'copy "%p" ...
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27 views

Converting MySQL master-master replication to master-standby

I set up two mysql servers in a master-master configuration. This was working fine until recently when I encountered a duplicate-key problem. After doing some research and evaluating my needs, I ...
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1answer
600 views

All four data nodes in MySQL Cluster in same node group

I am testing MySQL Cluster 7.2. I have two servers, mysql1 and mysql2. I want the management server and two data nodes to run on mysql1 and two other data nodes to run on mysql2. My config.ini file ...
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1answer
553 views

What are alternatives to Replication to distibute data (Microsoft SQL Server)

Is anyone knowledgeable of alternatives to SQL Server replication? I have a scenario where separate databases will share a lot of the same data which complex queries will match against. We want to ...
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391 views

pgpool2 not working on my Ubuntu i686 athlon i386 GNU/Linux

I am trying to implement replication and load balancing on my Ubuntu i686 athlon i386 GNU/Linux.for creating database clustures I have installed postgresql contrib 9.1.11 having initially database ...
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1answer
51 views

Can SQL Server replication be used for Point-of-Sale (POS)?

We are looking for a solution that will synchronize the databases of our POS. The scenario says we have 3 POS with SQL Server Express installed on each machine. We want these databases to be in-sync ...
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1answer
2k views

MySQL slave stuck at 'System lock' most of the time, high CPU usage

Let me describe what we are facing now: We have a MySQL Master-Slave, Row Based Replication setup and at the moment, the slave is stuck with a perpetual System Lock. The Master is an active server ...
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1answer
2k 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 ...
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1answer
623 views

SQL Server Troubleshooting Replication and Long-Running fn_dblog query

I am trying to get (pull) Transactional Replication working again for a subscriber. Currently, in Replication Monitor I am seeing messages in the Publisher to Distributor tab and the Distributor to ...
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3answers
681 views

How to remove master role from MySQL server

I have 2 MySQL servers, one is the master and other one is slave, that's all good. The problem I have is that the slave is also set up as a master. I would like to disable or remove the master role ...
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1answer
1k views

mongodb replication node stuck at “STARTUP2” with optimeDate as 1970

i have just setup replica sets with three nodes . the third node is stuck at stateStr STARTUP2 with "optimeDate" : ISODate("1970-01-01T00:00:00Z"). However its showing no error message. Is this ...
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3answers
185 views

Question on having a MySQL 5.1 replicate from a MySQL 5.6 DB

I have a question in regards of what potential issues that might happen with a MySQL 5.1 DB that replicates from a MySQL 5.6 DB. I know the risks involved based on resources such as ...
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168 views

MongoDB can't add new replica set member

I have a replica set, and I added a new member to the set. The initialSync begins for the new member and rs.status (on primary) shows STARTUP2 as status. However, after a long enough time, there's a ...
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3k views

Mysql replication is enabled but stuck at “waiting for binlog to be updated”

I have set up replication between an existing database (server-id=23), and a new one (server-id=51). I have followed the steps in this stackoverflow question, but replication is not happening. On ...
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1answer
73 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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2answers
3k views

Get the list of all Tables, Views, Stored procedures that are not added in a publication for replication

How do I get the list of all Tables, Views, Stored procedures that are NOT added in a publication for replication?
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1answer
149 views

How can I compare the server impact of transaction replication

We are developing a system that must extract data from an existing SQL Server 2008 R2 cluster. One of our design goals is to limit the performance impact on that cluster as much as is practical. ...
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2answers
61 views

Having DB Mirroring and Replication together

Can anybody help me understand why do one go combination of Database Mirroring + Replication. Why can't I just have Database mirroring for high availability of my database. What is the need of ...
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1answer
610 views

MySQL: Prevent DROP TABLE and TRUNCATE TABLE on Slaves

Can someone tell me how to prevent the following commands DROP TABLE <tbl-name>; TRUNCATE TABLE <tbl-name>; from being replicated to slaves?
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Is there Merge and Snapshot replication methods for MySQL?

In distributed database systems, is Merge and Snapshot replication supported in MySQL? I am thinking of something similar to MS SQL's types of replication: ...
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144 views

Peer-to-Peer Transactional Replication Load Balancing in MS SQL Server

I'm looking at Peer-to-Peer Transactional Replication and it looks like a perfect fit for my requirements, but there's one unclear part - load balancing (see picture below). How it is implemented in ...
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1answer
42 views

Secondary replica indexing

I have a question, about a question, that is part of the 70-462 Microsoft exam. I had this question today, and I'm not completely sure of the correct answer. While I did pass the exam, I would like ...
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5k 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
847 views

Merge reports 'You must rerun snapshot because current snapshot files are obsolete', gets caught in Death Loop

We have a very large Merge publication for a data warehouse with some large (.bcp files on the order of 20GB) fact tables that is causing us tremendous trouble. Specifically, we created a publication ...
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1answer
110 views

3 Node Replica Set all became SECONDARY

my 3 set replica set all became secondary and I'm not sure why. db1 2014-12-12T02:43:55.067+0000 [conn1413096] end connection 10.0.64.12:58483 (512 connections now open) 2014-12-12T02:43:55.067+0000 ...
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1answer
111 views

How to use mysql live update on a mysql table between localhost and remote server?

I have mysql table created/modifying in localhost, and I need to update those in my remote database. I have gone through lot of post regarding this scenario and I found out that I need to use mysql ...
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1answer
24 views

On triggers and replication in MySQL

I have a classical statement-based replication between the master and the slave. Triggers were created on the master and replicated on the slave as well. Assuming that I have, say an ON UPDATE ...
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3answers
172 views

mysql replication master 5.5 slave 5.1 error on create database

I have a replication system where my master has a mysql 5.5 version while the slave is mysql 5.1. I know that this is not supported because the slave version should be greater than the master, but we ...
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29 views

Best method to implement HA and DR, replication via 1 PUB and 2 SUB or replication and LS both

I need a advise on one of our projects where: We have 3 SQL database servers A, B and C: A is the live production server with around 200 users with a database of size 1.5 TB hosted. B is going to ...
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1answer
241 views

SQL Server replication conflicts after migration from 2000 to 2008

I got a suggestion over at Stackoverflow to post here....greatful for any and all help. Please bear with me I think this might take a while to explain. For many years now my company has hosted a ...
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1answer
640 views

MySQL Master-Master Replication not syncing

SETUP: I have a WAMP MySQL Master-Master replication setup on 2 machines with sync_binlog=1 for safety. Machine config: Windows Azure Standard 2: 2 core, 4GB RAM, Windows Server 2008, MySQL 5.6.12, ...
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13 views

Replicate SQL Server tables between AWS RDS instances

We are running an RDS instance in AU region and would like to replicate some tables to RDS instances in other regions. A lag of a few hours is acceptable between master and slaves. As we're on RDS ...
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1answer
55 views

Transactional replication between SQL Server 2014 (Publisher) and SQL Server 2012 (subscriber)

We need to set up transactional replication between two servers A and B, configs listed below: Server A (Publisher) Microsoft SQL Server 2014 - 12.0.2254.0 (X64) Enterprise Edition (64-bit) ...
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1answer
1k views

Ports necessary for Oracle 11g Replication across a firewall?

We have two Oracle 11g Enterprise Edition servers that need to replicate data via Oracle streams. However, the two servers are on untrusted domains and connect via a VPN. On end of the connection is ...
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2answers
36 views

Maintaining permissions on a replicated view after reinitialization

When we were on SQL Server 2005, there was some way that I was able to keep custom permissions on a view at the subscriber. Now that I'm on SQL Server 2012, there doesn't seem to be a way to do ...
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0answers
36 views

Postgres Streaming Replication: How to re-sync data in master (with standby) after failover

I am absolutely new to postgres 9.1 replication mechanisms. I have managed to set up streaming replication between a master and standby postgres (Both have x number of records). At one point when ...
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1answer
641 views

MySQL failover - Master to Master Replication

My company is trying to implement a MySQL failover mechanism, to achieve higher availability in our webservices tier - we commercialize a SaaS solution. To that end we have some low-end VMs scattered ...