Tomcat Clustering Configuration
I'm configuring Liferay on Tomcat 7 for clustering. I searched on the web and found several instructions. Reading all of them raised some questions to me. I would appreciate it if someone help me. A. I...
View ArticleMySQL master slave replication not working
I had MySQL master slave running and working fine but suddenly it stopped. I don't know which commands have been executed but now replication is not working. I am very new to MySQL can anyone help me?...
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 ArticleHow to merge and synchronize SQL Server Database Files?
I'm building a C# program for windows tablets that are synchronized with a database. They will each have their own local .MDF SQL Server database which they interact with using SQL Server Express....
View ArticleRun 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!
View ArticleReplication of Database in PostgreSQL
I want to Replicate my PostgreSQL, in the website there far too many options, I want to know which one to choose. I have a main server which the database is stored at. Inserting, editing and deleting...
View ArticleSQL Server Change Tracking and Replication
My colleagues and I are working on a solution revolving around change tracking… Our goal is to use SQL Server change tracking to track changes to be pushed to another non-SQL system. Our database is a...
View ArticleMerge Replication with Static Filters - Does not Delete from the subscriber...
I have a merge replication setup, I have applied static filters so as to send only specific rows to the subscribers from a publisher (table) say 'X' the filter is " where Name Starts with 'T' ". Now...
View ArticleDatabase mirroring with fixed set of tables without sql server replication
We have requirement of mirroring the database with some fixed set of tables. We do not want to use sql server replication for that purpose. Do we have any solution for that or any software for this...
View ArticleReplication DB move
I have 2TB of DB involved in SQL Server transactional replication. I want to move publisher DB files to a newer disk with minimum amount of downtime and without breaking replication. Please let me know...
View ArticleReplication from solr 4.10.3 to solr 5.3
We've been running solr 4.10.3 in production for years with simple master/slave replication. We're at a point where upgrading to 5.3 makes sense, but we're trying to do so in the easiest way possible....
View ArticleIn ArangoDB, can we do geo distributed sharding
The use case is that we have customers in US, EU and China. Due to legislation, EU customers data should not be stored outside EU, US customers data should not be stored in China. Due to performance,...
View ArticleMySQL replication error 1146
Any idea why there is '1146 - table doesn't exists' on 'CREATE TABLE IF NOT EXISTS...' statement. It actually happened only on one of the slaves (there are two in total): Last_SQL_Error: Error 'Table...
View ArticleAfter disabling replication, should I disable binary logging?
I have a master-slave setup currently but am going to remove the replication DB server. The DBs are running on MySQL 5.6. I have a couple of questions about removing the replication: 1) I have read...
View ArticleRelaying changes to a slave from another master with Tungsten on MySQL
I am trying to setup a multi-master type of replication with each master having an additional slave using Tungsten. As an example, lets say I have 4 hosts (A,B,C,D) and hosts A and C are the masters,...
View Articleclarification on Database Replication
SQL 2008 I have to do Database Replication which is a new for me. Goal is have mirror database on servers 2 and 3. When we set up Database Replication in the Server 2, 3 from Server # 1, Do i need to...
View ArticleAuto and Keep Sync Tool for Two MySQL Server
I know there exist many tools to sync two MySQL databases like MySQL Workbench SQLog DataSync MySQL Replica not a tool but MySQL build-in Feature and many of others. What I want to know is Is there...
View ArticleSnapshot replication - How to detect when a snapshot has arrived on the...
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...
View ArticleProblem when using gtid with MySQL replication
I am faced with this problem when using gtid in MySQL replication: When @@SESSION.GTID_NEXT is set to a GTID, you must explicitly set it to a different value after a COMMIT or ROLLBACK. Please check...
View ArticleERROR Error reading packet from server: Lost connection to MySQL server...
We are facing the issue in replication that we are not getting any error in Show slave status\G output rather facing the following issue in Error Log File [ERROR] Error reading packet from server: Lost...
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