Containers, Containers, Containers. It’s one of those things that apparently has been around “forever” but I just recently started to hear about it. As a Windows SQL DBA, things like Containers seems absolutely foreign to me.
Everyone is talking about Linux. SQL on Linux? Wow! I think it’s about time I start to dive into it. If you’re like me, then the only thing you know about Linux is that you know it’s an OS. That’s it. I have never installed/configured it let alone installing/configuring an app on it.
Then came along SQL Server 2017 (and now 2019), and the ability to run it on Linux. That was really eye-opening to me. Microsoft definitely loves Linux!
This post will go into how to install Linux (CentOS) and SQL Server 2019.
Recently, I had to use Azure Data Studio to access a application intent read only secondary replica. I had to use Azure Data Studio because I was using a Mac. I usually use SSMS on my Windows machines. If you want to connect with the “applicationintent=readonly” property via SQL Server Management Studio, you do so by typing it out in the “Additional Connection Parameters” as shown in the screenshot below:Continue reading “applicationintent=readonly in Azure Data Studio”
There are few features in SQL Server that are disabled, or turned OFF, by default that, in my opinion, should be turned on/enabled. One of those features is something called “Instant File Initialization” (You can read about the other one here).
There is a great comprehensive training video series by Paul Randal called, “SQL Server Logging, Recovery and the Transaction Log.” This is a Pluralsight 7.5 hour brain dump of everything Paul Randal knows about logging, recovery and transaction log.
It’s wise to set SQL Server file autogrowth to a set number rather than the default percent. That is because the percent setting can end up growing your file very large. The larger your file, the larger that percent will be. It’s better to set your file autogrowth to a set number and keep an eye on it for proper maintenance. Continue reading “How to Change Autogrowth in SQL Server 2012”
Recently a developer approached me at work and said, “I Can’t Start SQL Server Browser”
So, I logged into SQL Server Configuration Manager and saw that SQL Server Browser was stopped / off. When I right-clicked the SQL Server Browser to turn it on, I got this:
For the longest time I’ve had a hard time remembering the difference between SQL Server DDL vs DML statements. I had a hard time remembering what statement fell under what category. Was INSERT, UPDATE, DELETE a DML command or DDL? What about CREATE / ALTER? It was all confusing to me. Continue reading “SQL Server DDL vs DML”
It’s usually something simple that’s overlooked that ends up causing the biggest troubleshooting headache. Let me explain. I was creating a test database called “testDB” with a test table called “testTable” (yes I know, I put a lot of thought in the naming of these objects) and when I tried to insert data into this new testTable I got the following error:
Msg 208, Level 16, State 1, Line 1 Invalid object name ‘testTable’.
What the hec? How can it be an invalid object? I just created it! Continue reading “What’s Msg 208, Level 16, State 1, Line 1”
During a recent “interview” I was asked, “What two isolation levels in SQL Server will prevent phantom reads?”
I had never heard of “phantom reads” before but thought the person meant, “dirty reads.” So I replied, “READ COMMITTED and SNAPSHOT isolation levels.” Continue reading “Dirty Reads vs Phantom Reads in SQL Server”
Recently I had to find all the tables, columns, data types, etc. from a database. Below is a thorough script that brings back all the tables, attributes, data types, whether the column allows NULLS, whether it’s a Primary Key, or a Foreign Key (and if so, the referencing table). It’s extremely useful and easy to run. Continue reading “How To Find All Tables, Columns, Data Types of SQL Server Database”
Feel free to watch the how-to video above or read below.
There are many options to find the last login date for a a SQL Server login. Even though there are awesome scripts like Adam Machanic’s “Who is Active” (download link here), sometimes you might find yourself without internet access, or perhaps at a client site that doesn’t have “Who is Active” installed and you forgot your thumb drive at home. :) Continue reading “How to Find Last Login Date of a SQL Server Login?”
One of the developers approached me today asking why their simple SELECT SQL query was taking forever. I walked over to their desk and noticed their SQL code had a BEGIN TRAN but no COMMIT or ROLLBACK. I ran a:
…but that didn’t bring back anything. So then I ran:
…and it returned an open transaction with its associated SPID.
I used the KILL command to kill SPID 57 (Kill 57) and the developer’s query returned instantly.
And just in case you were wondering, the cause of the rogue transaction was a BEGIN statement that the developer ran without a COMMIT or ROLLBACK and the developer tried to access that same table in another session window.
I had an application go kaput on me all of a sudden and that wasn’t good. I had gotten back from lunch (always happens when I get back from lunch) and was immediately approached by the Sys Admin saying that a certain web application couldn’t connect to the SQL database. He wanted me to check out why and get back to him ASAP. Continue reading “Setup SQL Email Alert for Disk Space Usage”
I was fortunate enough to attend Paul Randal’s and Kimberly Tripp’s IETPO1 this past Spring. During the week long training I met Tim Radney (he’s a SQL Consultant at SQLSkills). I approached him, introduced myself and as we were talking, the subject of SQL Server backups came up. I explained my work’s current backup strategy and how I’d like to make it more efficient, both in speed and disk space. Tim suggested I enable the instance-wide backup compression option in SQL Server Management Studio (see image below) Continue reading “SQL Server Database Instance-Level Backup Compression Setup”