PostgreSQL Slony replication - scheduled sync
I am migrating Oracle database into Postgres and I need to implement replication of the master database to multiple slave dbs. The replication should be executed once a day at specified time (to take...
View ArticleBest approch to replicate data from one db to other db on same server
I am facing issue of time out and slow data response so I did search on Google and found that I could create a server which replicates main database data to secondary database and both on same server...
View ArticleMySQL Replication: How to restore master FROM slave?
TL;DR: given a master/slave setup between two MySQL databases, where the connection from the master to the slave is read only, how can you restore the master from the slave in the event of a failure of...
View ArticleWhy is SAN Replication is Causing Random Database Corruption?
Having a strange issue with a disaster recovery technology we're trying to implement. The environment in both datacenters is the same having VMWare and Dell Equallogic SANs, which are the same...
View ArticleSHOW SLAVE HOSTS; has an empty Host-output. How to get the slave-hosts?
I want to get all slaves-hosts from my master-host. So I thought, that SHOW SLAVE HOSTS; would be a good idea. Unfortunately, I get an empty host-column-output. Do you know what I can do? SHOW...
View ArticleMySQL transaction and replication between two datacenters
I'm using a master MySQL in an east coast data center and want to setup a replication server on a west coast data center. The app server on the west coast may at times need to write to the master....
View ArticleMongo DB Replica set Stuck at RECOVERING state
We have created a replica set and now the problem is 2 members of replica set [3 members set] are in recovering mode from 48 hours. Initially the size of recovering nodes was increasing and now even...
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 Articlelistening to pouchdb changes in particular view returns all documents
Trying to retrieve changes in pouchDB for particular view, but still receiving allDocs ... what am I doing wrong? Havent found any tutorials or detailed info how to do this, except pouch API doc...
View ArticleVague replication error code 2005
2015-04-07 13:49:53 23758 [ERROR] Slave I/O: error connecting to master 'replication'@master-host:3306' - retry-time: 60 retries: 1, Error_code: 2005 This was after attempting to do a change master to...
View ArticleFind out directory size considering replication in HDFS
Is there any way to find out raw HDFS space consumption by a directory. As far as I know hdfs dfs -du -s /dir shows /dir size not considering replication of inner files.
View ArticleKeep the column but avoid synchronizing column data in Merge Replication
Does anyone knows about merge replication to keep the column but not to synchronize the column data? Default value may show in column.
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What is the Relationship between HDFS Block Size and Network Replication...
Our HBase cluster has a significant amount of network traffic relative to the amount of data we believe we are writing to it via OpenTSDB. Relayed Bytes to OpenTSDB: Network Throughput in Bytes (Y Axis...
View ArticleHow to detect MySQL slave writes?
In a MySQL master-slave replication architecture, how do you detect if there have been (erroneously, since this should never happen!) direct writes on the slave? For now, I'm running this command on...
View Articlesql replication error - record exists on Publisher but it's trying to...
We have transactional one-way replication running, and suddenly today started getting this error : The DELETE statement conflicted with the REFERENCE constraint "FK_BranchDetail_Branch". The conflict...
View ArticleAmazon RDS replication with external slave
I've recently configured a replication with an external MySQL master and RDS as slave but now I need to reverse that config and use RDS as master and the other instance as slave. Actually I use a vpn...
View ArticleMysql Rebooting replicated Master / Slave
OS Debian 7 Mysql 5.5 replicated Master / Slave I have updated the kernel on the master and slave and wish to reboot both servers. Can someone advise on the correct procedure? I thought this may be...
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 ArticleMySql replication from 5.1 master to 5.6 slave keep crashing
I recently updated one of the replication slaves to mysql 5.6. After importing a recent dump from the master, I run mysql_upgrade with no errors. the database deamon started correctly with no error....
View ArticleWhy is replication stopped?
Got the following nagios alert this morning for our MySQL replica: 14:49 PROBLEM: mysql2/MySQL replication check is CRITICAL, 10.1.0.133 is 72870 seconds behind, Aug 09, 21:49 UTC When I look at SHOW...
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