Mysqlfailover command - No slave is listed in health status
I have successfully created replication using GTID_MODE. It works perfectly. Now I need to setup automatic failover feature in it. I have run the following command. mysqlfailover...
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Create Oracle Materialized View to be refreshed every 5 minute Using...
I'm Trying to create Materialized View which will be updated every 5 minute automatically, I need update based on Mview log table. I have created Materialized view log on TABLE1 CREATE MATERIALIZED...
View ArticleIs it possible to setup Redis Sentinel nodes to also switch on and off...
I'd like to setup 3 Redis Sentinel nodes as follows: they run on the same nodes of a 3 Redis instances: Master (M), Slave (R1), Slave (R2); M1 uses AOF R1 uses RDB R2 uses RDB I'd like to have...
View ArticleSQL Server replication issue - table not updating
I have a transactional replication publication from the primary server (SQL Server 2008 R2, with the DB in 2000 compatibility) to a read-only copy used for reporting/spreadsheets/etc. Replication is...
View ArticleMysql thinks Master & Slave have the same server-id
I've been setting up a master->slave_a->slave_b relationship and having a little trouble. I currently have the master->slave_a replication working fine. Each of the two slaves have exactly...
View ArticleHow to tell what user has synced
I have set up merge replication web sync to sync a publication from a SQL Server 2012 database. I am trying to make some parameterised filters using SUSER_SNAME() or HOST_NAME(). When I do a sync is...
View ArticleHard limitation for merge replication article count?
A bit of background. We developed an app that uses merge replication. Right now, we are currently publishing about 212 articles, and everything is fine, as it appears to fall into the 256 article...
View ArticleSQL Server 2008 R2 replication high delivery latency
I am seeing an unusually high delivery latency between our distributor and subscribers and I do not understand why. We have in this configuration 3 sql servers using transactional push replication to...
View Articlemerge replication too big
I have multiple handhelds which sync their data via merge replication. From time to time, new core data is imported on the server-database. For various reasons I keep the old data in the databse and...
View ArticleSyncronize mysql databases between local and hosted servers automatically
We have many websites with Development, Staging and Production servers. We have many developers for many projects. We need a solution to synchronize the developer and staging databases. After that one...
View ArticleMySQL 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...
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 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 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...
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Log Reader Agent is not running - The job failed
I created a transactional replication on PRE-PROD (via TSQL) and everything works as expected. On PROD platform replication is not working. While inspecting Replication monitor, I get this error...
View ArticleMySQL multi-source replication with identical DB names
How can I set up a multi-source master/slave relation with masters having the same database names? I am using the MySQL labs 5.7.2 release with multi-source replication. One of the use cases for...
View ArticleBest way to transfer a few tables from reserve server to production
We have two MS SQL Servers (2012 Standard Edition on Windows 2012 Server) which are located in the same subnet. One is production server. Another is reserve server. Currently there is a transactional...
View ArticleMySQL 5.6 replication causes 'waiting for table lock'
All of the sudden queries on slave server stopped with status "Waiting for table level lock" I restart mysql service and stop replications and locking does not show up anymore. Once I turn...
View ArticleSQL Server transaction replication agent error
We are running transaction replication on SQL Server 2008 R2 SP3. Distribution agents are reporting : "Agent is retrying after an error. 3 retries attempted" every 10 minutes. Tried changing the query...
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