R sample from sequence stepwise vs replicate with different results
I get some unexpected behavior when sampling from a sequence stepwise vs replicating the exact same sampling. If I repeatedly execute sample(seq(from = 0.9, to = 1.1, by = 0.01), size=1, replace=T)[1]...
View ArticleSQL Server 2014 Replication Over Route Setup
I have an OLTP server that I am thinking of setting up transactional replication for in order to support OLAP Reporting. I have a server named Yoda that we are using for our OLTP and one named Chewie...
View ArticleMySQL replication best practices
I'm setting up MySQL replication via binlog. It's a master / slave setup. I have a few questions on how to do this the best way. Should information_schema be replicated, if yes/no, why? Should mysql db...
View ArticleRunning replication on Mongo DB issues
I am new to mongo and am trying the code example given in the tutorail on Mongo site but am facing the issue below. According to the tutorial it should be fairly simple. But i am getting --replSet...
View ArticleHow to delay replication start
I'm creating a new publication for replication using the @allow_initialize_from_backup option to avoid the snapshot immediate creation and therefore locking all objects replicated on articles. The...
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how to fix this replication alert?
Can anyone help me with the replication..when I was trying to add a new article on the publisher..I got the below alert.. I checked the subscriber the table wasn't there..
View ArticleMSSQL filter row in replication limits
I have a transactional replication between two databases where I filter rows because I just want to replicate rows with certain userids. I have now hit the roof when it seems that the filters can’t...
View ArticleMongoDB sharded Replica cluster AWS
I am currently evaluating where to run a sharded&replica MongoDB cluster right now I am looking into: self hosted, or either self made on AWS with a bunch of EC2 instances AWS cloudformation...
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Solr nodes' replication is getting stuck
We have standalone solr servers which are master and slave. Also have a full indexer job nightly. Generally, when job executed successful everything is alright. But last days, we noticed that indexer...
View ArticleMySQL Error wth Relay logs - Could not open relay logs file for logging
We are receiving the following error. 2016-03-08 15:32:09 1184 [ERROR] MYSQL_BIN_LOG::move_crash_safe_index_file_to_index_file failed to move crash_safe_index_file to index file. 2016-03-08 15:32:09...
View ArticlecacheManagerEventListenerFactory vs cacheEventListenerFactory
I am EhCache RMI synchronous replication and configured my ehcache.xml as shown below. (please note that I am overriding most of classes and defining properties like "rmiURLs", "host" etc. in there...
View ArticleWhat configs influence whether user credentials/grants are written to the...
I have a fairly trivial master-master setup. When testing this setup I see that mysql users are binlogged and replicated on slaves. However on each of the masters the binlog-do-db* is for a specific...
View ArticleWrite-lock a whole table during transaction
I need to perform a delicate operation to my table in which I will solely insert, delete and select upon all of my rows and no God may interfere with the table during this operation: the table will be...
View ArticleNon-Replicating commands from (master) Mysql 5.5.40 to (slave) MariaDB 10.0.19
CRUD replicates just fine. But we noticed that DB structure altering commands such as ALTER TABLE and/or adding/updating columns to a table and even creating new ones do not replicate to the slave at...
View ArticlePostgreSQL streaming replication lag for synchronous standbys
We use PostgreSQL 9.5 in a master + synchronous hot-standby setup, i.e., using synchronous_commit = on and using synchronous_standby_names='*'. Consequently, the standby has sync_state = sync in the...
View ArticleMySQL replication and master users on slave server
Do the users initiating inserts on the master server also have to be on the slave with at least as many permissions for the replicated queries to be correctly executed? My understanding is that you...
View ArticleTransactional Replication from SQL Server to Azure SQL
I'm attempting to setup transactional replication between an on-premises SQL Server and an Azure SQL database. Unfortunately, it looks like Azure SQL doesn't support SQL Server Replication, and Azure...
View Articlehow to show result 'show slave status' from mysql on vb6
i try to check replication status on mysql using vb6, here is my code Dim rs As New ADODB.Recordset Set rs = ExecSQL(GetDSN, "show slave status") If rs.RecordCount > 0 Then MsgBox ("xxx") End If...
View Articlemysql replication missed quite a lot SQL statement
I have set up a master/slave with mysql-5.1.73 The master's binlog format is "statement". The master and slave seemed running very well with slave status: Slave_IO_Running: Yes Slave_SQL_Running: Yes...
View ArticleSQL Server log shipping : any way to skip some transactions without breaking...
I was able to set up log shipping from Primary to Secondary database. I need then to cleanup some old data from Primary database but I need that data in Secondary for reporting. So my idea was to stop...
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