Database design for a lot of rows with data archive
i'm new to database design on larger scale. I have some knowledge and experience with MySQL but now i have some performance issues. Currently i'm using MySQL with 3 databases: History Snapshot Static...
View ArticleCreating bi-directional replication in SQL Server
After a lot of searches, reading a few articles and trying couple of suggested solutions, I am still unable to successfully set up a bi-directional transactional replication for SQL Server. I have...
View ArticleWhat about replication between server and take care from local specifications?
I have 2 servers, a master and a slave. The slave is used if the master is not accessible for any reasons. Each server contains web application with apache/tomcat. I would like to replicate...
View ArticleMySQL replication stopped for over 10 days, will replication work correctly...
I'm foggy on exactly how replication works. Here's my scenario. Today (April 6th) I realized that our replication slave had an error caused by a failed "CREATE USER" command on March 20. Since then, no...
View Articlepostgres wal sender replication timeout during pg_basebackup
Let me start with the caveat that I am still green with Postgres. I am working on a postgres 9.2 Active/Standby cluster on Debian wheezy for an application, based off of the ClusterLabs pgsql cluster...
View ArticleSQL 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...
View ArticleCan 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...
View ArticleSlave Waiting to reconnect
I have added new slave host to master for replication, but missing some of the parameters. mysql> show slave status\G *************************** 1. row *************************** Slave_IO_State:...
View ArticleDelivering replicated transactions in SQL Server transactional replication
I had seen this message in no. of replication cases but never got to know what is the exact cause behind this message and what troubleshooting to be done to know what is going on. What I want to know...
View Articleis it possible to alter the primary key of a table (from non clustered to...
I have a table that has an clustered unique index and a non clustered primary key with the same structure as the index. IF OBJECT_ID('[dbo].[tblBAccountHolder]') IS NOT NULL DROP TABLE...
View ArticleDatabase scrubbing and making data scrambled [on hold]
I am looking in to database scrubbing tools or software that will also scramble my data that would be hard to identify. currently, I use oracle 11g database on Linux server as my production database...
View ArticleHow to migrate from a MySQL master-slave setup to a master-master setup...
We have an existing master-slave MySQL replication setup where we would like to promote the second slave to a master in order to achieve a master-master setup with no or only minimal downtime. Is it...
View Articlereplication between two tables with different names and which have different...
I have a requirement where i have create replication between two tables with different names and which have different column names. Is it possible to create such replication. server A server B...
View ArticleHow to measure or estimate the streaming replication lag in Postgres 9.2
I've been asked to reverse engineer an app that uses postgresql in the back end. I can see that there is some database replica tion going on... based on my reading, I *think it's called streaming...
View ArticleMySQL slave server getting stopped after each replication request from Master
Basic master-slave MySQL configuration has been done on Windows machine. Master and slave servers are running on localhost with different ports. Now when executing update or insert in master server,...
View ArticleAerospike cluster with different replication factors
I have a cluster with replication factor of 6 (and 6 nodes). I want to change the replication factor to 3 without downtime. What happens if I change the RF node by node and restart each node? Is it...
View ArticleHow to replicate MySQL table in different servers?
I am searching for some solution for the following problem: I have two MySQL Database servers in different locations. I need copy a specific table from Server A into the same table of the Server B...
View ArticleHow create MongoDB cluster on Kubernetes?
I want to create MongoDB replica of the three machines, it needs to specify the IP-addresses of these machines? But they run into a pod's and have a dynamic IP. If you try to specify the DNS-name...
View ArticleHow to install a 3-node sharded cluster, with each node being a replica set?
How to install a 3-node MongoDB sharded cluster, with each node being a replica set & in which nodes I've to configure the following things: Config Server Query Router Shards This is for test...
View ArticleMongo data migration - single node to replica set [on hold]
i have my current production mongo (v2.6.6) that running as single node. I'm moving now to ReplicaSet architecture and I wonder if i can define my current server as a master in my replica set - even...
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