SQL Server 2008R2 - how to install replication components
I am trying to install the Replication components for SQL Server 2008R2, on technet website it says: On the computer that is running IIS, insert the SQL Server 2008 R2, SQL Server 2008, or SQL Server...
View ArticleSQL Server 2014 Replication - The process could not connect to Subscriber 'xxx'
I have just set up very basic transactional replication on SQL Server 2014. The Publisher and Distributor are one and the same. I have configured the Publisher to push to the Subscriber, so any and all...
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...
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Error 1236 - "Could not find first log file name in binary log index...
Our setup: Master: MariaDB 10.0.21 Slave: MariaDB 10.0.17 Replication was working fine until recently at which point the slave's DBs had to be restored from a dump. I performed all of the necessary...
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MS SQL Server Transactional Replication and Security Setup
I am new to SQL Server replication. I was able to setup transactional replication successfully, but I feel like I am missing some important concepts regarding security and accounts. I have a few basic...
View ArticleMySQL convert to UTF8 without structure change
I have a rather large database that I am trying to convert from charset and collation latin1/latin1_swedish_ci to utf8mb4/utf8mb4_unicode_ci. I am hoping to setup replication to a slave, run the...
View ArticleBi-directional replication for the same MySQL table
AppA stores/retrieves data from dbA.tableA AppB stores/retrieves data from dbB.tableA tableA definition is the same across these databases. To start with dbB.tableA was copied from dbA.tableA (assuming...
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Permanent count of waiting tasks (2) in Activity monitor
Now I'm observing in Activity Monitor permanent count of waiting tasks: and at "Resource waits" tab I see next: so, my question is: How to find and resolve this wait tasks? I suspect that it related...
View ArticleReplication of PostgreSQL cluster from Datacenter to Office with write access
Some information about the cluster: Version: postgres 9.5 Size: /postgres/data$ du -hs . 854G OS: Ubuntu 14.04 LTS Storage: Raid10 SSD's I have a master-slave PostgreSQL 9.5 cluster running in a...
View ArticleMEMSQL replication
Is there a way we can do replication in mem-sql? I see it is available only on enterprise edition, but I want to do some development before going for enterprise edition. Is there any help on this?
View ArticleAdd article to transactional publication without generating new snapshot
Using SQL 2008 R2 transactional replication with pull subscribers, when we add an article, I'd like to avoid having to create an entire snapshot (the db is ~80 GB, so this takes hours). From this...
View ArticleMongo replicated shard member not able to recover, stuck in STARTUP2 mode
I have following setup for a sharded replica set in Amazon VPC: mongo1: 8G RAM Duo core (Primary) mongo2: 8G RAM Duo core (Secondary) mongo3: 4G RAM (Arbiter) Mongo1 is the primary member in the...
View ArticlePgpool tries to write to slave machine
It occured only once - pgpool (newest version) allowed application to write to a slave machine. The only error message I have is like that: "cannot execute UPDATE in a read-only transaction", nothing...
View ArticleNotifying postgres changes to java application
Problem I'm building a postgres database for a few hundred thousand products. I will set-up an index (Solr or maybe ElasticSearch) to improve query times for complex search queries. The point now is...
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 ArticleMySQL table replication on the same server
I have one the same server (Linux) two databases: db1 and db2 and I want to replicate db1.table1 to db2.table1 I added the following lines to my.cnf and restarted mysql service replicate-do-table =...
View ArticleApache Kafka: Mirroring vs. Replication
Mirroring is replicating data between Kafka cluster, while Replication is for replicating nodes within a Kafka cluster. Is there any specific use of Replication, if Mirroring has already been setup?
View ArticleSetup MySQL Master to Master replication/automatic failover when each Master...
Thanks in advance. I have always worked with SQL Server and never really had any exposure to MySQL. I now have to determine the preferred setup for MySQL when there are four servers involved. Ideally,...
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(mysql) Database replication between 2 DB while 3rd DB as backup
I am not an advanced DB admin or designer. I am sure there are articles on this kind of scenario, probably too many. So I got confused and not sure which solution is appropriate/best for me. I am...
View ArticleThe insert statement conflicted with the check constraint - ID column Still...
I have a strange problem with a database replication. When my program wants to INSERT something in a table, i get the following exception: The insert statement conflicted with the check constraint...
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