Finding differences between a master and slave when pt-table-sync fails
I have a table that's showing some differences on a master and slave according to pt-table-checksum (PTC). I've found some verifying differences beyond that. Certain tables in the mix have composite...
View ArticleLaggy slave OK to have only one system user in processlist?
In all the examples of a processlist on a mysql slave I've seen, there are two system users. I have a slave that is very far behind the master. When I do show a processlist, there is only one system...
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 ArticleEstimating bandwidth required for streaming replication
I have an existing postgresql server that I would like to replicate to another location using streaming replication. How can I best estimate the amount of bandwidth that will be required to keep the...
View ArticleConfigure MongoDB Replication at AWS
I am trying to configure a MongoDB replication at AWS with 3 instances. I have two instances right now and I can ping each other. Mongo deamon is running correctly with a same replication name. But...
View ArticleTrying to understand SHOW SLAVE STATUS\G
I have slave setup and looks like it is running fine. Below is a snapshot of it. show slave STATUS\G; *************************** 1. row *************************** Slave_IO_State: Waiting for master...
View ArticleWhich databases can meet these replication requirements?
I am doing research on database architectures, and I am looking for which software can meet my requirements. To try to explain the requirements simply: You have a master database server. This may make...
View ArticleMySQL server migration to new hardware
I have to migrate working DB from old server (~50 Gb, mysql-5.5.43, openvz, all data in InnoDB) to a new hardware and new mysql version (mysql-5.6.28, debian). DB is "alone" - no replica servers. Dumps...
View ArticleCould not obtain information about Windows NT group user
I am creating a SQL Server Replication using a script. When I try to execute The job failed. Unable to determine if the owner (STAR\moorer7) of job L3BPT2M-Atlas-14 has server access (reason: Could not...
View Article"Uninitialized subscription" error in replication monitor
I'm using SQL Server 2012 and trying to implement transactional replication. Im using the system stored procedures to create the publications and subscriptions. I was successful in creating these...
View ArticleSlave show I/O ERROR : 1236 the master has purged binary logs containing...
We have One Master and One slave server, we take a daily backup of DB by shell script from slave server using mysqldump and before taking the backup we stop the salve and once the backup is completed...
View Articlereplicate-ignore-table setup and usage for excluding table from binlog backup
I need to make an everyday backup of a mysql database that is very big on a remote server and I only want to get the difference since the last backup. I also need to exclude some tables from being...
View ArticleSQL SERVER 2016 - Distribution Server compatibility
Can you create an SQL SERVER 2016 distributer that merges data between a 2008 R2 server to another 2008 R2 server?
View ArticleAfter Restore Log_reuse_wait_desc of Replication
I'm wondering if anybody has ran into this issue before and has any suggestions on what's causing it/how to fix it. We are restoring a database into lower Dev environments and after the restore the...
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 ArticleMongoDB to MySQL Replication Automatically
i have Mongodb server and mysql server. i want to use mongodb for "write" and mysql for "read". so i am looking for some tool or some process by which we can tranfer mongodb to mysql server on regular...
View ArticleMongo Replication
I have a mongo 2.4.8 database setup and running in a live environment. I am wanting to add a replica however I would like to use the latest version 3.2.9 for the replica. Is the only way for me to do...
View ArticleMongoDB Sharded Cluster on AWS reliability
I have setup one mongodb cluster on aws with 3 shards as replicaset, 3 mongos and 3 configs. All the 3 EC2 Instance are t2.medium (4GB, 2CPU, 50GB EBS 150 IOPS (io1 not gp2)) Our database is only...
View ArticleSQL Server Database Restore with Replication
Forgive me if this sounds angry/rant-y, but it kinda is. High Level Overview: How can I restore a SQL DB that's involved in transactional replication with 5 pub/subs, without having to drop, create,...
View ArticleRecommendation for synchronizing SQL Server DBs
I have two databases, prod and dev. Each DB is about 500GB. At the end of each work day, the prod database gets several million new rows and several thousands of updates. After the data is loaded in...
View Article