Read More on SQL Server Installation on RHEL

• How to install SQL Server 2017 on RedHat Linux
• How to Install SQL Server on Redhat Linux without Internet – Offline Installation
• Install SQL Tools on RedHat Linux using Internet
• Install SQL Server Agent on RHEL
• Installing SQL tools on RHEL without Internet – Offline Installation

Uninstall SQL Tools on RHEL

As we know sqlcmd and bcp utilities are part of SQL tools so if you want to uninstall these utilities from red hat linux machine you need to uninstall SQL tools package mssql-tools. Follow below steps to uninstall sqlcmd utility from your redhat linux machine.

1- Connect to your RHEL server where SQL tools has been installed and running. Check whether SQL tools are installed on this machine or not by checking sqlcmd or bcp utilities. You can see RedHat Linux is recognizing sqlcmd utility that means SQL tools have been installed on this machine that needs to be uninstalled.

2- We can see sqlcmd utility in above screenshot. Now, we will uninstall SQL tools by running below command.

#Uninstall SQL tools from RHEL
sudo yum remove mssql-tools

You can see the details of SQL tools package that is going to be removed from this machine. We can see mssql-tools package is going to be removed here. Above command will ask us to type y to proceed with the uninstallation of this package mssql-tools and type N to quit this removal.

I entered y to uninstall SQL tools from this machine. This will uninstall both utilities sqlcmd and bcp. You can see SQL tools package mssql-tools has been removed from this machine post entering y in above screenshot.

3- Now, we can check sqlcmd or bcp utility again to validate this uninstallation. I typed sqlcmd as i did in first screenshot and pressed enter. Now we can see red hat linux is not recognizing sqlcmd utility, that means SQL tools have been removed from this machine.

#check sqlcmd utility post SQL tools uninstallation
sqlcmd

Here i have shown step by step process to uninstall SQL Tools sqlcmd and bcp from linux machine.

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Read More on SQL Server Installation on Linux Servers

• Installing SQL Server 2017 on Ubuntu Server
• How to Install SQL Server on Redhat Linux without Internet – Offline Installation
• How to Install SQL Server on Ubuntu without Internet access – Offline Installation
• Installing SQL Tools on RedHat Linux Server

Uninstall SQL Server 2017 on RHEL

Uninstalling SQL Server 2017 that is running on Linux server is totally different process as compared to its windows based SQL Server. Follow below step by step process to uninstall SQL Server 2017 from your RHEL Linux server.

1- Connect to your RHEL server where SQL Server 2017 is running and that needs to be uninstalled from the server. Check whether SQL Server is installed on this machine or not by checking SQL Server service. You can see SQL Server is running on this server.

#Run below command to check SQL Server Service.
systemctl status mssql-server

2- Check SQL Server files along with the database files before removing SQL Server. We will validate SQL Server removal by checking these files post uninstallation.

#Check SQL Server binaries & database files
sudo ls -lrt /var/opt/mssql
sudo ls -lrt /var/opt/mssql/data

Note: Make sure to run full backup of all your databases and keep them in a safer place for future needs.

3- Now, we will uninstall SQL Server by running below command.

#Remove SQL Server from your Linux machine
sudo yum remove mssql-server

You can see details of SQL Server packages that are going to be removed from this machine. These packages are SQL Server and SQL Server Agent that are going to be removed here. Above command will ask us to type y to proceed with the uninstallation and type N to quit this uninstallation. Type y to proceed with the SQL Server removal.

You can see SQL Server and SQL Server Agent both packages have been removed from this machine.

4- Now, remove all SQL Server binaries and database files from its installed location that we checked in second screenshot by running below command.

#Remove database files and SQL binaries.
sudo rm -rf /var/opt/mssql

Here, your SQL Server has been removed from this linux machine. You can check SQL Server binaries and database files by running below commands. We can see no files in these locations because they have been removed now.

#Check database files.
sudo ls -lrt /var/opt/mssql/data

#Check SQL Server files & folders.
sudo ls -lrt /var/opt/mssql

5- Now you can check SQL Server service again by executing below command.

#Check SQL Server Service post SQL Server Removal.
systemctl status mssql-server 

We can see SQL Server is not loaded this time but service is showing as active.

When you will try to restart this service, it will throw you an error that unit not found as shown in below image.

6- Now we need to reboot the server to update SQL Server service status on RHEL. I restarted this linux machine and again checked the SQL Server service. You can see this time it says service could not found.

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