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...
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SQL Server Replication: "ALTER TABLE ALTER COLUMN" is not...
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...
View Articlemongodb replication node stuck at “STARTUP2” with optimeDate as 1970
i have just setup replica sets with three nodes . the third node is stuck at stateStr STARTUP2 with "optimeDate" : ISODate("1970-01-01T00:00:00Z"). However its showing no error message. Is this...
View ArticleUpdateable Subscriptions: Rows do not match between Publisher and Subscriber
I have transactional replication with updatable subscribers set up in SQL Server 2008. It has 3 subscribers and 1 publisher. I had to setup replication again due to some errors related to the database...
View ArticleSQL Server Cross Database View
I am attempting to build a reporting platform for our CRM. The design of the system has a separate DB (with the same structure) for each client. I am replicating (transactional) these 50 DBs to the...
View ArticleCan scheduled and continous replication configurations exist side-by-side on...
Environment We have a core sql server cluster. This cluster contains some databases that get replicated to a load-balanced sql cluster of currently 3 servers. These databases are replicated each 12...
View ArticleMerge reports 'You must rerun snapshot because current snapshot files are...
We have a very large Merge publication for a data warehouse with some large (.bcp files on the order of 20GB) fact tables that is causing us tremendous trouble. Specifically, we created a publication...
View ArticleSQL Server replication - set PollingInterval in...
I am trying to create replication subscriptions to and SQL Server 2008 R2 via a script. There are 3 subscribers so this script creates the subscriptions by calling sp_addmergesubscription and then...
View Articlepgpool2 not working on my Ubuntu i686 athlon i386 GNU/Linux
I am trying to implement replication and load balancing on my Ubuntu i686 athlon i386 GNU/Linux.for creating database clustures I have installed postgresql contrib 9.1.11 having initially database...
View ArticleMySQL: Prevent DROP TABLE and TRUNCATE TABLE on Slaves
Can someone tell me how to prevent the following commands DROP TABLE <tbl-name>; TRUNCATE TABLE <tbl-name>; from being replicated to slaves?
View ArticleList of Expired Merge Subscribers
I have a setup of merge replication. Sometimes, subscribers will not be able to sync within the retention period set in the publication. How can I get a list of expired subscribers to a merge replication?
View ArticleWhat is maximum Amazon S3 replication time on file upload?
Background We use Amazon S3 in our project as a storage for files uploaded by clients. For technical reasons, we upload a file to S3 with a temporary name, then process its contents and rename the file...
View ArticleMySQL Master-Master Replication not syncing
SETUP: I have a WAMP MySQL Master-Master replication setup on 2 machines with sync_binlog=1 for safety. Machine config: Windows Azure Standard 2: 2 core, 4GB RAM, Windows Server 2008, MySQL 5.6.12,...
View ArticleSQL Server Cross Domain Transcational Replication
Has anyone got any documentation for doing/implementing Cross Domain SQL Server 2012/2008R2/2008 transactional replication document or steps (with screenshot or without screenshot)?
View ArticleDatabase Mirroring and Replication in SQL Server 2008 R2
I have configured the mirroring and replication between 4 servers (A,B,C,D).i.e, Mirroring between A to B and C to D, Replication between A and C. The configuration was a success and I am able test the...
View Articleslow writes on percona / mariadb server only when replication is running
Hi I am trying to migrate to percona server from mysql 5.6 on windows. In my development machine for percona is running of centos 6.5 which is installed on vmware 5.5 sphere. Our business application...
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 ArticleHow to use mysql live update on a mysql table between localhost and remote...
I have mysql table created/modifying in localhost, and I need to update those in my remote database. I have gone through lot of post regarding this scenario and I found out that I need to use mysql...
View ArticleReplication Snapshot folder not cleaning up
The job that I thought was supposed to clean up old snapshots isn't removing the old files. The retention is left at default yet there are snapshots months old which remain. The job runs as the agent...
View ArticleMongoDB can't add new replica set member [rsSync] SEVERE: Got signal: 6
I have a replica set and I added a new member to the set. The initialSync begins for the new member and rs.status (on primary) shows STARTUP2 as status. However, after a long enough time, there's a...
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