CDC vs replication vs anything else
In my product we need to create a solution for the reporting team to extract and process the data. We need to send them incremental data changes from our DB. I am evaluating various solutions. Looked...
View ArticleWeblogic Replication Issue with JSF application
I have two servers on Weblogic cluster and deployed JSF based application on that cluster. I have created Cluster called Cluster01 which has Server01 and Server02 Servers. While accessing the...
View ArticlePervasive v10 - DXDeact Error - System DSN found but no longer valid
I've inherited a Pervasive database (v10.21.0025) that replicates between two servers. Recently the replication became corrupted. I attempted to re-sync the two databases but immediately ran into an...
View ArticleGrabbing SQL Dump of Master DB Without Downtime
I'm curious whether downtime will be necessary to grab a SQL dump of my master database. Right now, I'm in the process of rebuilding my one slave. There is actually only one database from master that...
View ArticleHow to stop MySQL from replicating CREATE TABLE... on Slave for ignored...
Mine is a simple MySQL Master-Slave setup, with --binlog-do-db option as discussed in this article. As per the documentation, logs are written for DDL statements for all databases irrespective of...
View ArticleUnable to replicate a database
I setup a master slave replication, where the master has the following setup datadir = /mnt/DATADIR/ bind-address = 0.0.0.0 binlog-ignore-db = information_schema,mysql,performance_schema,sys...
View ArticleHow to improve query count execution with mySql replicate?
For my report I have to use count queries (name 'user_activity' for example) and then group by by another column (user_type) in another table (user table). And its really time consuming when it comes...
View Articlemysql GTIDs and the transactions themselves
I keep getting some errant transactions directly on a slave. Is there a way of looking up what the transaction is based on the GTIDs? Thanks in advance.
View Articlemysqlfailover log error filter check failed
I've noticed in my mysqlfailover log that I was seeing 'filter check failed'. I've proven that this error is related to a setting I made in the mysql config file. replicate-ignore-db = databasename if...
View ArticleAdd a new column with new values
I need to ADD A NEW COLUMN with VALUES 'ABC00001234' In this case, all values in the column will be 'ABC00001234' Will the SQL statement add these column&value in the actual DBF? or for just the...
View ArticleUsing a view in SQL replication for horizontal filtering
I am setting up transactional replication with more than 200 subscribers. I have read that using a view for horizontal filtering of the rows is best practice so that if you need to change the...
View ArticleMySQL error 1236 When using GTID
I want to create a replica to my Percona Server with GTID enabled, but got this error when i show slave status: Last_IO_Error: Got fatal error 1236 from master when reading data from binary log: 'The...
View ArticleRaspberry as data aggregator node, transfer to database if Raspberry is online
I have never used SQL and currently I do read and watch various turorials and the manual of PostgreSQL. I would appreciate if someone could give me a brief overview how an experienced user would set up...
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Cannot connect to a mongos
I am implementing a sharded cluster in a Windows environment. I first create the config server as follows: C:\MongoDB\bin>mongod –configsvr –bind_ip 192.168.1.4 –port 3000 –dbpath...
View ArticleMySQL 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 with...
View ArticlePython: replication of local mysql db on remote mysql db
I developed a python program that must stored datas into a mysql db. I would that this db, is on remote server but on the computer, where the program runs, sometimes I don't have internet connection...
View ArticleCan I use --no-lock --slave-info at the same time with innobackupex
I am now going to setup a new slave for my master DB instance (MySQL 5.5). And I see there's two parameter offered by innobackupex: --no-lock & --slave-info. Is it possible that I use the both...
View ArticleERROR com.googlesource.gerrit.plugins.replication.ReplicationQueue
We use replication v2.9-rc2 plugin between server-A(gerrit v2.9-rc2) and server-B(gerrit v2.9-rc2). After creating a new change with commit(83c40032b8a066b6195ca4bfe10a63f3ea4ed914) , the error.log on...
View ArticleMySQL replication on slave server Broken/Stopped without error
(Hi; sorry for my English) My question is: how can I restart MySQL replication on a slave server. At first sight everything seems to be normal but when I check with SHOW SLAVE STATUS\G besides...
View ArticlePostgresql promoting slave server to master
I am trying to setup Postgresql(9.4) master-slave cluster. I am using the following tutorial: http://linux.xvx.cz/2014/10/loadbalancing-of-postgresql-databases.html The issue I am facing at the moment...
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