How to setup cross region replica of AWS RDS for PostgreSQL
I have a RDS for PostgreSQL setup in ASIA and would like to have a read copy in US. But unfortunately just found from the official site that only RDS for MySQL has cross-region replica but not for...
View ArticleReplicating Excel 2007 file info to SQL Server
I want to build an Excel info database: I mean I want to store cells info into a table as follows: TableExcelInfo(ID BIGINT, Column VARCHAR(10), Row VARCHAR(10), VALUE VARCHAR(MAX), CELL_VALUE_TYPE...
View ArticleMongoDB Replica Sets - 50 Nodes But 7 Voters
So, I heard the maximum number of nodes a MongoDB replica set can have is 50. And the maximum number of voters it can have is 7. Let's say all 50 are set at Priority 1 and let's say out of the 7...
View ArticleBroken mysql replication on slave server (error 1236)
My question is: how to fix broken mysql replication on slave server (error 1236)? server 1 (192.168.1.105) server 2 (192.168.1.106) I ran these steps to re-sync: At the master - server 1...
View ArticleSame ID error when I try to replicate databases
I'm not able to replicate a database from a live server to local server(which is accessible from outside). I got this error on master server Fatal error: The slave I/O thread stops because m aster and...
View ArticleUnicode character replication MSSQL to MYSQL in Symmetric DS
I'm doing replication from MSSQL to MYSQL using symmetricds and it is working fine. Now , the problem is: In the SQL Server table , I have a column defined as NVARCHAR(20) which accepts unicode...
View ArticleReplicate update statement as Insert in Mysql 5.6
I want to replicate all update statement from Master as a Insert at Slave end. Is it possible like in SQL Server? If so, how? I want to do it because, if any record on Master is updating and if same...
View ArticleHow tungsten master-master replication prevent conflicts
I heared about Tungsten Master-Master mysql replication that it handles all conflicts which we face in normal mysql master-master replication, after reading so many articles on web, my understanding...
View Articleis it possible to have basic wan replication for hazelcast opensource edition?
I'm aware that on hazelcast editions comparison page: https://hazelcast.com/pricing/ it is clearly specified that WAN replication is only for enterprise edition. But, on the other hand, this hazelcast...
View ArticleSQL Server using Linked Server to Oracle - table definition not updating with...
Is there some trick for SQL Server Linked Server to update the ODBC connection to a changed table? SQL Server provides Oracle with a view. Oracle runs a materialized query to basically make a table and...
View ArticleDatabase migration - Simply change connection string?
We are migrating our database (MySQL/MariaDB) onto a dedicated server. Previously, our web server hosted the database. I've already set up master-slave replication between the web server and the new...
View ArticleTransactional replication in SQL SERVER
When we altering any database objects at publisher, we have received below error messages. table_name table - Unable to modify table. Cannot drop the table #table_name because it is being used for...
View ArticleMySQL - How to see the queries executing by slave io thread
We have a strange problem with MySQL replication. We have observed huge load and IO wait on server while replication is in progress. We can have information of the queries from bin-log by using...
View ArticleDistribution (system database) data files are deleted manually in SQL Server
We have deleted distribution (system database) data files manually. Now I'm unable to do below process(How can I delete logical instance of distribution). Disable publishing and distribution wizard An...
View ArticleSQL Server could not disable publishing and distribution
SQL Server could not disable publishing and distribution on 'server_name'. (Microsoft.SqlServer.ConnectionInfo) An exception occurred while executing a Transact-SQL statement or batch....
View ArticlePosibilities for bi-directional replication
Here i found an article on Bi-Directional replication. I had tried that way and it works fine for me. here my question is that, is that the right way to achieve this? any other possibilities for this?...
View ArticleTwo SQL Servers cross-mirroring each other?
I'm looking to see if I can create a "Brother's Keeper" environment in SQL Server 2008 Standard Edition. I have a large number of databases across multiple servers. I'm not worried about scalability...
View ArticleManually overwrite data in replicated server
I'm not very familiar with SQL Server. I am using SQL Server 2012 Management Studio. I have two databases (one internal and one external). Our external DB has been hacked and I need to overwrite all of...
View ArticleIndexes on Slave
I already have a my system with Master-Slave replication. I have started using Slave for data fetching. So, I need to create some extra indexes on Slave.[Not In master - however be informed that the...
View ArticleWhat exactly are secondary members acknowledging in replicasets with MongoDB?
I try to understand the mechanics and behavior of MongoDB's replica-features better. I hope to get some insightful information from someone who is familiar with mongo's internals and behaviour. My aim...
View Article