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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204 views

Bi-directional replication for the same MySQL table

AppA stores/retrieves data from dbA.tableA AppB stores/retrieves data from dbB.tableA tableA definition is the same across these databases. To start with dbB.tableA was copied from dbA.tableA ...
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3answers
52 views

Deleting data from a large table with replication

I need to delete all the rows from a given table. The table contains millions or records. The master database is being replicated to several slaves and I wish to do that without creating a replication ...
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1answer
204 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
148 views

Database Mirroring and Replication in SQL Server 2008 R2

I have configured the mirroring and replication between 4 servers (A,B,C,D).i.e, Mirroring between A to B and C to D, Replication between A and C. The configuration was a success and I am able test ...
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1answer
552 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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62 views

Can a slave with a dynamic ip update the master

How can I setup mySQL replication in such a way that a slave on localhost with dynamic IP can update the master as well as get updates from the master which has a static IP. The slave will not be ...
0
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1answer
493 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 ...
0
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1answer
233 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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156 views

Consolidated realtime mysql backup with master/slave setup or binlog

I have 20+ mysql servers and their have low write requirements. So, I want to see if any way I can replicate the data/binlog from these servers to a single slave so realtime backup purpose. If I ...
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1answer
128 views

SQL Server Cross Domain Transcational Replication

Has anyone got any documentation for doing/implementing Cross Domain SQL Server 2012/2008R2/2008 transactional replication document or steps (with screenshot or without screenshot) Thanks for your ...
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0answers
19 views

SQL Server Replication (Login failed for user 'NT Service\SQLAgent$SQL2014')

I'm trying to setup a replication on my local computer. I setup the distributor, the publisher and the subscriber. When I launch replication monitor on the publisher instance it returns the ...
4
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1answer
354 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
443 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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1answer
296 views

MySQL relay log rotates too soon and too often

I have a simple master/slave setup where the slave is just a backup. Sometimes I notice that the relay log on the slave rotates too often and too soon, when it is still very small: 4:00 PM ...
3
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3answers
120 views

Replication with FileStream

I need to setup database replication (for high availability) on a database that uses FileStream. This is on SQL Server 2012 Standard Edition, so Always On or Peer-to-Peer replication is not an option. ...
0
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1answer
91 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
223 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 ...
0
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1answer
92 views

Can scheduled and continous replication configurations exist side-by-side on the same master/slave servers?

Environment We have a core sql server cluster. This cluster contains some databases that get replicated to a load-balanced sql cluster of currently 3 servers. These databases are replicated each 12 ...
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1answer
64 views

PostgreSQL replication with fsync disabled?

I need to run PostgreSQL in-memory (for performance reasons), so I intend to disable fsync, which means that no writes will be sent to the WAL. However, as part of my scheme to meet another ...
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9 views

MariaDB replicate views

I have a database in MariaDB from which I wan't to provide information from some of it's tables (for example, from the users table I don't wan't to showpassword, and also skip some users, like admin) ...
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29 views

MySQL Binlog Dump process stops after net_write_timeout

We have 2 MySQL 5.6.19-1 servers with master-master replication that were working fine (DB01 and DB02). One of them was rebooted unexpectedly (DB01) and seemed to be working fine, but we saw that the ...
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1answer
27 views

Dealing with Mysql Replication and Functions

In MySQL replication Master-Slave, is there anyway to deal with the functions: LOAD_FILE() UUID(), UUID_SHORT() USER() FOUND_ROWS() SYSDATE() GET_LOCK() IS_FREE_LOCK() IS_USED_LOCK() ...
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1answer
16 views

Replicating tables from LAN database to web server?

I have an in-house database (that's actually part of a third-party product) running on 2008R2 Express. We'd like to display some of the data on a new website we're working on (running 2008R2). I'm ...
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1answer
277 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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2answers
976 views

Disk space recovery on Mongodb replicaset secondaries

Is it possible to recover disk space on replica set secondaries based on the results of a repairDatabase call performed on a primary? I can't seem to locate anything that would work short of bringing ...
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1answer
365 views

How to user the Tablediff Utility with Replication Filters

I am using merge replication in SQL 2012. I am trying out the TableDiff utility to show non convergence. I see a problem with this approach though. This is because I am using parameterised filters to ...
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1answer
22 views

Is there any drawback of MIXED replication mode?

So, recent mysql server allows three types of replication mode: STATEMENT, ROW, MIXED. They all have pros/cons, and I pick the mode according to site characteristics. When I get a replication error I ...
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1answer
78 views

Using non-replicated read/write databases on a MySQL slave server

I have a MySQL slave server that has two databases being replicated from a master. What I'd like to do is add a third database that I will exclude from replication and use as a read/write database. ...
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2answers
48 views

Live Partial Table / column replication

I want to know if there is a way to achieve the following with SQL Server 2012 Enterprise Edition? I have Table A: on Server 1 with say 10 columns. Table A: | col1 | col2 | col3 | coln | col10 | ...
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15 views

MySQL Cluster Master Master Replication - broken Leg

I have two MySQL Clusters which normally operate with Master - Master Replication between two of their nodes. Site 1 gets the majority of the write traffic, with Site 2 writing small amounts of ...
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1answer
639 views

SQL Server: subscriber as publisher and hierarchical replication

In Oracle Streams one way replication from one DB to another is a basic block for many replication topologies (N-way, hierarchical, combined and so on), and changes could be captured and applied for ...
0
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1answer
55 views

RAID drives or replicate data?

I have an old Microsoft SQL server that, for financial reasons, I cannot replace until later in the year. The OS, DB and temp files are on one 10k RAID 5 array (I didn't design it) The server is ...
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2answers
63 views

Snapshot replication - How to detect when a snapshot has arrived on the Subscriber from the Subscriber DB

I have snapshot replication set up to on a server which publishes to a second server as part of a scheduled SQL Server Agent job. When the snapshot finishes, I would like to detect when each table has ...
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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
72 views

Start mongod instance on replica set as background job

I have setup a Mongodb replica set with 1 secondary node. When i execute on secondary sudo mongod --replSet rs0 --dbpath /data --port 27017 --oplogSize 700 The primary and secondary nodes are ...
4
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1answer
558 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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11 views

Bucardo doesn't do fullsync

I have a 2 computers, one of them called master, and the other called slave both using PostgreSQL 9.3.5, but has different OS (32-bit and 64-bit) I have installed and setup the bucardo on the server ...
0
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1answer
29 views

MySQL 5.6 replication causes 'waiting for table lock'

All of the sudden queries on slave server stopped with status "Waiting for table level lock" I restart mysql service and stop replications and locking does not show up anymore. Once I turn ...
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13 views

mysql replication error 1236 need to restart replication process

I'm using mysql replication and the slave/master crashed in the process and then I got: Got fatal error 1236 from master when reading data from binary log: 'Could not find first log file name in ...
0
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2answers
263 views

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

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 ...
0
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1answer
121 views

MySQL slave taking too long on “Queueing master event to the relay log”

I have two mysql mysql slave servers. The DB version is: mysql> show variables like '%version%'; +-------------------------+-----------------------------------------------------+ | Variable_name ...
3
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1answer
152 views

Updateable Subscriptions: Rows do not match between Publisher and Subscriber

I have transactional replication with updatable subscribers set up in SQL Server 2008. It has 3 subscribers and 1 publisher. I had to setup replication again due to some errors related to the database ...
0
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2answers
690 views

How to run a cold backup with Linux/tar without shutting down MySQL slave?

I run the following before tar-ing up the data directory: STOP SLAVE; FLUSH TABLES WITH READ LOCK; FLUSH LOGS; However, tar will sometimes complain that the ibdata* and ib_logfiles* files are ...
2
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2answers
3k views

Mongo replicated shard member not able to recover, stuck in STARTUP2 mode

I have following setup for a sharded replica set in Amazon VPC: mongo1: 8G RAM Duo core (Primary) mongo2: 8G RAM Duo core (Secondary) mongo3: 4G RAM (Arbiter) Mongo1 is the primary ...
0
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1answer
22 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 ...
0
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1answer
251 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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1answer
25 views

MySQL replication duplicate key errors after error 1594

So I had this happen to me recently: mysql> show slave status\G; *************************** 1. row *************************** Slave_IO_State: Waiting for master to send event ...
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29 views

Create table on a Master - Master config avoiding replication

I have a Master-Master configuration. What I want is to create an auxiliary table only for a report project so it's not necessary to replicate it. Is there a specific way to make this in the CREATE ...
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15 views

MySQL - Checksum won't match between master and slave hosts despite dumping and reloading the table [duplicate]

I am playing around with table checksums and I am puzzled as to why I cannot get two checksums to match. I have two hosts, one being a slave for replication. I have a particular problem table that ...
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0answers
68 views

“ORA-00936: missing expression” setting up Oracle Publisher in SQL Server

I'm trying to set up an Oracle publisher in SQL Server so I can perform replication. I've gotten connected to Oracle, the drivers work great (I have other linked servers), I can select an article I ...