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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12
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2answers
1k views

What can we do in MySQL 5.0 Replication to address bandwidth concerns?

I am developing an application to run on the client PC (Win) which is configured with a MySQL server 5.1 instance that will act as read-only slave to the remote master. The remote master has dozens of ...
3
votes
1answer
1k views

How to fix discrepancies between publisher and subscription data?

I have a transactional replication between two SQL Server 2008 SP1 servers, both on Windows 2003 Server. I discovered that there are discrepancies between some of the tables of the main database and ...
5
votes
3answers
748 views

Database replication and consistency check

I got a question about 2 databases (oracle 10g) that I have, let's call them A and B. A have some information(in various tables) and I want B to get a partial copy of some tables from A, and ...
2
votes
1answer
732 views

Are master/slave replication relationship between different versions of SQL Server possible?

I have a database server, SQL Server 2005, that's inside a private network. Now i need to make a database there available for a webserver, so i want to replicate this db to an external server, which ...
8
votes
3answers
12k views

How do you re-sync the Master MySQL DB with Slave DB changes if the Master goes offline?

MySQL Server 1 is running as Master. MySQL Server 2 is running as Slave. With both DBs online, they are in "perfect sync". If Slave goes offline, there's no problem if Master still online; they will ...
5
votes
2answers
264 views

Database replication with ability to revert to previous states

I want to setup a development database such that it'll initially be a mirror of the database used in production. At fixed points during the day (maybe midnight or something) and/or manually, I want ...
6
votes
4answers
2k views

Duplicate database and keep it up to date - Replication or SSIS?

I would like to duplicate a database, on the same server, and keep it up to date either by running a scheduled service once a day or having SQL Server 2008 take care of this internally. We don't need ...
2
votes
1answer
982 views

master to multi-slave replication

I am looking at replication of the master database (PostgreSQL) and this is the configuration I have to setup master -- hot-standby (hs) | | --- read only slave (r1) | | --- read only slave (r2) ...
5
votes
1answer
472 views

What are the common reasons for a Subscription to be deactivated in SQL Server 2005?

I am trying to manage database replication in SQL Server 2005. I have set up my publications, distributors and subscriptions and it seems to work properly at the start. However, after a period of ...
4
votes
2answers
1k views

Can I have different publishers and one subscriber in replication?

I have the same databases in three cities which each database have three tables: 1- tbl_worker 2-tbl_workshop 3-tbl_users and cities are:city1,city2,city3 city2 and city3 insert informations in ...
2
votes
2answers
1k views

Does the target for Double-Take replication require an Oracle license? [closed]

Where would Vision Solution's Double-Take product fall with regard to Oracle Licensing? It is both a backup and a replication of the database. Oracle's Software Investment Guide has a section on ...
5
votes
1answer
6k views

MySQL high availability, failover and replication with Latency

We are in the process of implementing a new CMS (Drupal 6.x) that runs on MySQL. We have two data centers -- primary and secondary -- with known latency between them. We're unsure which version of ...
2
votes
2answers
1k views

SQL 2008 R2 3rd Party Peer-to-Peer Replication, Global Site Distribution

We are looking at hosting 3 globally distributed SQL Server installations at different data centers. The intent is that Site A will serve web traffic and data for a specific region, same with Site B ...
2
votes
1answer
1k views

database duplication VS database replication

Is there a difference between duplication and replication with reference to a database? I am not sure if I am correct at all, but duplication means to me that we are copying bit by bit without ...
2
votes
3answers
3k views

Script to Monitor MySQL Replication

G'Day, I am looking for a bash script (using Perl - As that is already installed on the machine and I don't want to have to install Ruby, Python etc. just for this requirement) that will perform some ...
4
votes
1answer
2k views

MySQL master binlog corruption

We recently made some changes to our infrastructure and now I can't keep MySQL replication running. The slave complains of a corrupt binlog and resetting it doesn't help. I keep seeing entries like ...
1
vote
1answer
471 views

SAN Storage & Server for Oracle Replication

I need a 2-3 TB storage server group for Oracle Database. We want SAN Storage & Server for Oracle Replication, but not Microsoft Storage Server. For example : HP DL380 G6 as a server and EMC ...
6
votes
4answers
3k views

MySQL Replication - Introduce new Slave to replication

I've recently taken on a sys admin position managing a group of 20 (or so) servers. One thing I haven't dealt with before (apart from in a test situation), is introducing a new slave to the MySQL ...
7
votes
4answers
12k views

Replicating a remote MySQL database to MS SQL Server 2008

I want to replicate the contents of a MySQL database to a MS SQL Server 2008 database. Is this possible? Can anyone outline the steps required in order to achieve this? Thanks.
5
votes
2answers
3k views

How can you stop MySQL slave from replicating changes to the 'mysql' database?

I have my slave set to not replicate the 'mysql' database as described in this SHOW SLAVE STATUS\G; Slave_IO_State: Waiting for master to send event Master_Host: 127.0.0.1 ...
9
votes
5answers
2k views

Is it unwise to run replication on same physical server?

I'm contemplating setting up a Master-Slave replication for my database. The slave server will be used for redundancy and possibly a reports server. However, one of the biggest issues I'm running into ...
5
votes
4answers
656 views

Is there a way to measure replication lag in MySQL with a resolution less than 1 second?

Is there a way by which you can measure replication lag in MySQL with a resolution of less than 1 second? That is, can replication lag be measured on the microsecond or millisecond level?
5
votes
2answers
411 views

Best practices to run time offset delayed replication

I want to setup replication system on postgresql like #1 MASTER SERVER and two replicated servers: #2 SERVER in realtime (for load balancing), #3 SERVER delayed with some time offset (for example 2 ...
9
votes
1answer
1k views

What is the difference between PostgreSQL 9.0 Replication and Slony-I?

Is there still any use for Slony-I, and if so, what is it? For clarification, from 9.0 Postgresql supports built in streaming replication.
4
votes
3answers
813 views

With MySQL Replication, what level of resilience is possible?

I've found lots of good material on setting up MySQL replication, but not much on what to do in the event of failures. Understanding the degree of resilience I can achieve is fundamental to designing ...
0
votes
1answer
834 views

Sql Server merge replication primary key violations

Using Sql Server 2008. Pretend I have a publisher and 2 subscribers A and B. The replicated table has a guid on it and also a primary key that is not the guid. Frequently, updates happen at both ...
32
votes
7answers
40k views

How do I completely disable MySQL replication

I am running dual master MySQL replication and now want to move to a single database with no replication. How do I completely disable replication on both databases?