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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32 views
MySQL Master/Slave. Actual use of Slave Machine
We have a MySQL server running in a mobile production trailer. The trailer is out on the road for weeks at a time. We have cell internet and wifi access is nearly all of our locations. Our office ...
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4answers
28 views
MySQL Master/Slave without populating tables
So I have some Zabbix instances which are using MySQL for their backends. What I would like to do is, for DR purposes, backup the DBs for each instance using a Master/Slave configuration, with the ...
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0answers
25 views
How to sync mysql remote database daily ?
I have a database that contains orders , products ..etc. I have another system that generates reports based on this database. Due to heavy load i want to separate those systems Where i have the master ...
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1answer
24 views
How to install and configure Postgres-XC in windows?
Can anybody suggest me any resources of the complete installation procedure of postgres-XC in windows. I've installed postgresql-9.2 in my windows and can use it. Now I need to know the installation ...
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1answer
24 views
distribution.dbo.MSdistribution_history comments explanation
The comment column of distributor.dbo.MSdistribution_history contains comments such as
<stats state="2" fetch="11554" wait="214007" cmds="17898546" callstogetreplcmds="106880">
...
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2answers
50 views
mysql replication successful but slave not replicating
I have created a mysql master-slave configuration and things look fine .
the " show master status;" on slave doesnt show any error . this is the output
Slave_IO_State: Waiting for master to send ...
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1answer
50 views
SQL Server-MySQL master-master replication
We are looking into setting up a master-master replicated MSSQL database and I am interested to hear of any potential pitfalls that we may run into along the way and generally any advice that you ...
1
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1answer
47 views
Merge Statement + Replication difference for SQL Server 2012
We have a SSIS package that will pull from a source database and run a merge statement to put the data into a "Master" database. (Eventually the "Master" database will be the source of truth, but we ...
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0answers
13 views
Is it possible to upgrade mongodb cluster without upgrading arbiters?
Is it possible to have running real nodes with version 2.4 and arbiter nodes with 2.0 or 1.8 in the replica set?
Upgrade guides for version 2.2 and 2.4, did not tell anything about upgrading ...
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1answer
36 views
MySQL Replication and Triggers
I have stumbled upon an interesting MySQL Error message that I do not really know how to interpret.
The setup:
There are two tables A and B.
When data is written or updated in the table A, then a ...
2
votes
1answer
55 views
Is replication from SQL Server 2008 to PostgreSql possible?
Is it possible ? Sql Server as publisher(master) and PostgreSql as slave(subscriber) ? Any type of replication really.
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2answers
34 views
Modifying replication distributor & publisher
I have a SQL Server 2008 transactional replication setup as follows:
192.168.100.1 <-- Distributor
192.168.100.2 <-- Publisher
192.168.100.3 <-- Subscriber
Our network team want to change ...
2
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2answers
47 views
Does MySQL 5.6 support fan-in replication?
I've known for quite awhile that Continuent's Tungsten Replicator supports fan-in replication (example).
By fan-in replication I mean combining multiple datasources into a single instance (like a ...
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0answers
25 views
Oracle to SQL Server DDL replication
We have this customer requirement to do DDL + DML transactional replication from Oracle to SQL Server 2012. The DML part is straightforward. There are multiple options to choose from including the SQL ...
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2answers
56 views
How to avoid lagging when enabling log-slave-updates?
Master:
48GB RAM
16-core
my.cnf: https://clbin.com/hlkUo
Slave:
64GB RAM
24-core
my.cnf: https://clbin.com/viLm0
Both are running 5.5.28.
For the incremental backup purpose, I need to enable ...
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0answers
28 views
MM Replication and Zabbix in slave, Error code 1032
I have multi-master replication and using Zabbix for server monitoring. Since the replication is row based, I get this error in slave everytime which also breaks my replication. The error I get is:
...
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1answer
119 views
Master updates Slave but not Master itself
I have a setup master/slave in which applications are pointed only to master. Yesterday Master had got crashed due to "multi bit error on dimm detected" in Front indication panel in orange color.
...
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0answers
47 views
PostgreSQL: Slave doesn't replicate the Master's data
I'm using PostgreSQL 9.2.3 on both computers, both of which run Win2008R2. I've setup streaming replication by following this guide: ...
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0answers
54 views
“Arithmetic overflow” when initializing SQL Server 2012 replication from backup
I'm initializing SQL Server replication from a backup, by following instructions from here:
http://www.mssqltips.com/sqlservertip/2386/initialize-sql-server-replication-using-a-database-backup/
...
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3answers
126 views
Transfer 1 million records from one table to another
I want to replicate 1 million rows from table1 to table2. I have written a job with a query like this:
delete from table1 OUTPUT *.delete into table2
I am executing this job every one hour, but it ...
2
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2answers
115 views
MySQL replication: most important config parameters for performance on slave server?
I'm setting up a mysql master-slave configuration, where slave is located on a much weaker sever.
Since, if I understand correctly, slave only works on updates/inserts, what are the most critical ...
1
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2answers
57 views
Is it safe to delete mysql-bin files?
I have MM Replication in mysql, and I want to squeeze some free space in the box be deleting unnecessary files, I came across these mysql-bin files inside /var/db/mysql/ There are hundreds of those ...
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1answer
29 views
mysql replica ignoring server-id [closed]
I've setup a mysql replica slave a couple months ago. After a couple hickups lately, I've decide to restore it from a clean master export.
I'm trying to start my mysql instance with this command :
...
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0answers
17 views
Can i use XAMMP mysql server with Percona Xtradb cluster?
I just wanted to know if I can use a normal MySQL server (XAMPP) as part of the cluster on my EC2 Server running Percona XtraDB Cluster.
Can I just change the my.cnf config file on XAMPP with the ...
4
votes
2answers
71 views
Transactional Replication Concerns
We are debating an architecture that employs sql server 2012 and transaction replication. Idea is to offload reporting activity to a secondary server and have the ability to include/exclude what is ...
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0answers
21 views
Oracle Downstream Log transfers
I am attempting to create a downstream capture process for two Oracle 11 databases running on Linux servers. The replication will be one-way and asynchronous using archive logs as the transfer ...
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0answers
28 views
MySQL replication is not happening when piping sql into mysql client
Today I noticed a very strange issue where if I cat a SQL file and then pipe it to MySQL client, replication doesn't happen. These MySQL statements aren't also written to the binlog. But replication ...
3
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1answer
113 views
Switch MySQL lag slave to new master and keep lagging (5.1)
We have the following scenario:
Set of slaves replicate from the master, separate standby master (a.k.a slave with binlogs) replicates from the same master; lag slave, powered by pt-slave-delay, ...
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1answer
45 views
SQL Server Replication: “ALTER TABLE ALTER COLUMN” is not propagated to subscribers
We are running SQL Server 2008 R2 SP1 as publisher & distributor, and SQL Server 2005 SP3 as subscriber. The replication of schema changes is activated, and the replication has been running for ...
1
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1answer
47 views
MySQL replication — issue with mysql.proc during replication from 5.0 to 5.5 host
We are replicating from a mysql 5.0.45 host to a 5.5.26 host over WAN. Every once in a while one of our databases does not accept a query and halts the replication.
"'Column count of mysql.proc is ...
1
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2answers
71 views
Is there a way to stop MySQL Replication on the master?
I want the master to stop replicating data to the slave. I know I can do that on the slave with STOP SLAVE;, but I wonder if there is a way to do it in the master.
One possible solution might be to ...
1
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2answers
54 views
Loading data in mysql using LOAD DATA INFILE, replication safe?
I am trying to load data into mysql database form CSV file. I found that we could use LOAD DATA INFILE command to do it. But as per the mysql documentation it is not replication safe. (See here)
Is ...
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2answers
29 views
Pull Subscription: process cannot read file due to OS error 5
I am trying to migrate a working pull subscription for transactional replication from one subscribing server to a new one. The subscribing server is at another site and is connected via a VPN tunnel. ...
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3answers
78 views
Single slave - multiple master MySQL replication
I need to replicate different MySQL databases from multiple servers into a single slave server. How can this be done? is there a way to define multiple master hosts?
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1answer
21 views
replication breaks after upgrading master
I have a set up of replication with master 5.1.30 and slave 5.5.16
and the replication is working good
Now i have upgraded mysql master to 5.1.47
As far as i know we have to turn off the log bin ...
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0answers
23 views
How to get replication from a SQL Server mirroring setup 2008 R2
I have a mirroring setup in the UK (principal, mirror,witness) which hosts a number of databases. failover is automatic for individual databases and local client connections are managed using dynamic ...
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1answer
43 views
MySQL replication using a lot of IO
I'm having big troubles on a database pool I've setup recently.
There is a master, and 4 slaves replicating one DB. All using MyISAM engine.
Thing is, during the replication period (when the slave ...
1
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1answer
44 views
MySQL statement-based replication and stored procedure
When you have a MySQL statement-based replication and you create a stored procedure that modify some rows (INSERT, UPDATE, DELETE commands...), What is really replicated on the slave when you call ...
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0answers
37 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
36 views
Syncronize mysql databases between local and hosted servers automatically
We have many website with Development , Staging and Production Server. we have many developers for many projects, we need a solution to synchronize the database with developer database with staging ...
0
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1answer
45 views
MySQL: replicating to a different table engine type
According to the replication documentation from MySQL, it is possible to set up replication from InnoDB source tables to MyISAM destination tables. Unfortunately, the documentation has little to say ...
0
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2answers
74 views
which sql server edition is good for practice [closed]
Which SQL Server (free/trail) would be good to install, which requires minimum resource and have maximum features. I mean, I can practice mirroring,logshipping and replication. I found this link, but ...
3
votes
0answers
61 views
Streaming Replication Failover - how to point second slave at new master?
I have a Postgres database HA cluster I've set up in a lab. I'm using PgPool-II to manage fail-over.
For the cluster itself, I have three identical Postgres 9.2 servers set up like so:
Server A - ...
0
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1answer
35 views
Replication Monitor reports little to no latency, but my tracer token is taking hours to go from Distributor to Subscriber
I sent a tracer token through a replication job that was reporting about 2 seconds of latency about two and a half hours ago. I sent the token through because I noticed a row that was inserted on a ...
1
vote
1answer
46 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?Can you help me to make the stored Proc for that?I am new to Replication....Thanks
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0answers
19 views
What is the quickest way to recover from an “Incorrect key file for table” replication error?
I'm trying to figure out the quickest way to recover from a replication error.
The production site replicates to a DR site. There are two databases at each site. So prod_master replicates to ...
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0answers
24 views
Slave lags ONLY when long running sql runs
I have mysql Master/Slave setup.
Master in 5.0.77 and Slave in 5.5.28.
The Master serves 24/7 with 82.06 inserts/s, 94.39 updates/s, 0.00 deletes/s, 22613.29 reads/s.
They both are in sync every ...
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0answers
33 views
Huge sizes Replication Tables in Sql Server db, how to deal with?
I've a sql server database that is configured to work with old software, i've no details about the software, but i know that DB uses replication.
the DB size dramatically increases.
When i ...
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2answers
77 views
Should I disable triggers, timestamps in a slave in mysql?
We're using MySQL. We have a master that eventually will have 2 slaves. There are triggers in the db that execute when data changes in certain tables. I am wondering whether to disable the triggers in ...
1
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1answer
29 views
After adding a slave to Master - Master configuration, slave syncs from only one master
Futher to my previous question,
Here is what we have
+<------+
| ^
V |
S1<---M1 M2
| ^
V |
+-------+
what happens is Upon ...
