Question We have a 3TB OLTP database running Siemens Opcenter MES software at one of our manufacturing plants in China. This is setup in an Always-On Availability group with one secondary node. As this is a manufacturing plant, we are only provided 11 1/2 hours … [Read More]
Since I started at Stack Overflow, I’ve had the chance to see some of the interesting challenges with running our databases at our scale. My coworker Taryn Pratt (blog|twitter) recently blogged about fighting with deadlocks related to Stack Overflow for Teams. Lots of logins Taryn … [Read More]
In yesterday’s post, I showed how to configure an availability group (AG) to use the RegisterAllProvidersIP=0 when you can’t get clients to connect using the MultiSubnetFailover=true connection string attribute. I mentioned that you have to make some trade-offs when you set RegisterAllProvidersIP=0, and included this … [Read More]
As a DBA, we have the opportunity & responsibility to build highly available database platforms for use by applications & users. Even if you are a DBA at a small company supporting databases for only internal applications, we are usually still responsible for providing databases … [Read More]
Assume you have configured a transactional replication publisher, which is part of an availability group (AG). Now, you have an asynchronous secondary AG (or mirroring) replica that is offline. Perhaps this is a DR node, and you are doing patching or other planned maintenance on … [Read More]
As a DBA or SQL Developer, you’ve surely encountered a scenario where something worked for you, but not for another user. DBAs usually are part of the sysadmin role, or have a collection of powerful permissions. If I run code as myself, I will never … [Read More]
UserSteve is upgrading to a new server and needs to move all his server settings to the new instance. I introduce him to DBA Tools as a quick way to copy configurations and other stuff to the new instance.
Starting with SQL Server 2017 CU6 and SQL Server 2016 SP2-CU3, you can now configure your distribution database as part of an Availability Group (AG). I found one spot where a minor change made a few of my scripts blow up.
I’ve used replication and Availability Groups together before. Replication works great with an AG as both a publisher or a subscriber (though, not as a distributor–you can’t add the distribution database to an AG). I was surprised when I recently ran into a problem configuring … [Read More]
Question I am wondering if it is possible to split up a very large query to have parts of it done on the secondary read only servers, or If this feature only allows me to run separate queries or scripts on the secondary servers. I … [Read More]
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