SQL AlwaysOn & System Center Configuration Manager TP 4 1601
Recently Microsoft released Technical Preview 4 for Configuration Manager (1601). Per TechNet, "Configuration Manager now supports using a SQL Server AlwaysOn availability groups to host the site...
View ArticleI am using tungsten replicator for my database from master 5.0.92 to slave...
During replication i am facing statement failed error on slave but succeeded on master. Although its going in sequence but i don't understand why its failing. Status from slave: ==> user.log <==...
View ArticleReal Time data replication in SQL Server
We are facing a technical challenge for the below scenario. Any solution with any technology are welcome. Our client has a legacy SQL Server replication system in place with one ERP source system with...
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what's difference between sql_log_bin and log_bin in MySQL？
can anybody tell me what is the difference between them ?
View ArticleChanging replication snapshot folder, require re-snapshot?
We have a SQL 2012 SP2 server running on Server 2012. We need to change the snapshot folder for all (including default) transaction replication publications. I have read that this means the replication...
View ArticleHow to switch Quiescing to Normal Mode in Oracle?
I have two instance database Oracle, they are ORCL11 and ORCL10,.... I've configured them, it looks like correct. Then, I connect to replication user admin ORCL10 conn repadmin/repadmin@orcl10 And run...
View ArticleRelaying changes to a slave from another master with Tungsten on MySQL
I am trying to setup a multi-master type of replication with each master having an additional slave using Tungsten. As an example, lets say I have 4 hosts (A,B,C,D) and hosts A and C are the masters,...
View ArticleCan a slave with a dynamic ip update the master
How can I setup mySQL replication in such a way that a slave on localhost with dynamic IP can update the master as well as get updates from the master which has a static IP. The slave will not be...
View ArticleNumber of arbiters in replication set
In MongoDB tutorial of deploying geographically distributed replica set it is said that Ensure that a majority of the voting members are within a primary facility, “Site A”. This includes priority 0...
View ArticleMySQL Replication - 1 Master - 2 Slaves. Inserting works for One, not the other
I am a Python developer, working with 3 databases, configured in Master -> slave,slave style. Each slave has their own application associated with it. I am not too familiar with database...
View ArticleMongoDB allocates chunks only to Primary when sharding is enabled
I'm setting up an instance of MongoDB with 3 shards. I've setup everything seemingly correctly by following the docs and comparing my config with that of a friend who has a similar setup but with a lot...
View ArticleMySQL Master-Master - different bin logs
We have Master <> Master replication. After some start-stop issues - I found some odds in replication. First - on both boxes we have an error: 160226 10:08:59 [Note] Slave I/O thread: connected...
View ArticleApache Solr: Slave replicates 10+ times every time it polls (excessive commits?)
We're using Apache Solr (3.1.0) to index a lot of articles written for multiple sites. We have a master/slave setup (replication config at the bottom), where server 1 indexes the articles, and server 2...
View ArticleWhat happens if we keep Additional Domain Controller shutdown in a different...
We have two Active Directory Domain Controllers running windows 2012 in two different sites & physical locations. One location is Head Office, another is a Branch Office. But due to electricity...
View ArticleFinding 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 ArticleCreating an incremental database copy in PostgreSQL
Virtual machine software like VirtualBox allow one to make incremental VM clones. That is data, once "touched" (opened writable), will be copied and stored in the incremental cache of the new clone. I...
View ArticleMongoDB can't add new replica set member [rsSync] SEVERE: Got signal: 6
I have a replica set and I added a new member to the set. The initialSync begins for the new member and rs.status (on primary) shows STARTUP2 as status. However, after a long enough time, there's a...
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Violation of PRIMARY KEY constraint during Merge Replication
I have two identical SQL Server 2005 databases (MYDB_Pub, MYDB_Sub1) where the merge replication was configured and it works fine. Recently we upgraded to SQL Server 2014. To test the replication...
View ArticleFor a standby workload of long running analytical queries, is it better to...
When spinning up a hot standby server specifically for BI/Analytics purposes where long running queries may be common, is it better to turn on hot_standby_feedback or set the max_standby_*_delay...
View ArticleIs it possible to have MySQL slave outside firewall
For various reasons I need one of the databases from intranet MySQL server to be made available to (insecure) online server. Due to the requirements it was decided that a db dump will be used via cron...
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