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What does the TNSLSNR.exe file do?

The TNSLSNR.exe process is also known as Oracle Database (Version 10g Express Edition) or, as the case may be, Oracle TNSLSNR Executable and is a part of Oracle Database (Version 10g Express Edition, 11g Express Edition) or, as the case may be, PL/SQL Developer. This software is produced by Oracle (www.oracle.com). An obsolete or defective version of TNSLSNR.exe can cause problems for your computer that can range from slowness to error messages such as these:

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What you should know about TNSLSNR.exe Oracle Database

TNSLSNR.exe is not part of Windows, but it is important nonetheless. The file TNSLSNR.exe is found in a subdirectory of "C:\Program Files". Frequently occurring are file sizes such as 204,800 bytes (61% of all these files), 512,000 bytes as well as 6 other variants.
It is the service "OracleXETNSListener".
The TNSLSNR file does not come from Microsoft and is not part of the operating system. This process does not have a visible window, and does not appear on the taskbar. File properties have not been internally documented by the producer or developer. This particular software is receiving or sending data on the LAN (your local network) or on the Internet. For this reason, 59% of all experts consider this file to be a possible threat. The probability that it can cause harm is high.

If you see this file on your hard drive or in Windows Task Manager, please make sure that it is not a malicious variant. It's a fact that many trojans try to cloak their true identity by calling themselves TNSLSNR.exe. With the above information or by using tools like Security Task Manager you can determine if, in your case, the file is an undesirable variant.

What do other computer users say about TNSLSNR?

Oracle TNS Listener process
Martin Fuchs
Oracle - Listener file
G Azevedo
Run this file if you want others to be able to connect to your Oracle database
installed on database server (further information...)
Angel Perez
This is part of Oracle (further information...)
John E. Moore

Summary: 14 users judge TNSLSNR.exe to be an essential file that should not be touched. source: file.net

How to uninstall Oracle Database or PL/SQL Developer

To remove Oracle Database from your computer, please follow the manual instructions below or use an automatic uninstaller product.

  1. Click the Windows Start Button. You find it in the lower left corner of the taskbar.
  2. Type the word uninstall.
  3. Click Add or remove programs.
  4. Now locate Oracle Database or PL/SQL Developer in the list of displayed applications.
  5. Click the program, and then click Uninstall.
Remove software in Windows 10
TNSLSNR.exe Oracle Database fix

How to tell if TNSLSNR.exe (Oracle Database) was uninstalled cleanly

After uninstalling, restart your computer. Then start Windows Explorer and see if there is still a folder with the name of the software under C:\Program Files. Be sure to check the Registry as well for remnants of Oracle Database. To do this, start "Regedit", then look under "HKEY_LOCAL_MACHINE" > "Software" for Oracle Database or the name of the producer. Always keep in mind that only a computer professional should ever directly delete entries in the Windows Registry.

What to do if a program does not uninstall

The easiest way to remove any kind of software cleanly and accurately is to use an uninstaller tool. Because the uninstaller automatically creates a backup, there is no risk of anything going wrong.

Last but not least

If Windows not working quite right for you, or if startup is taking a long time, or TNSLSNR.exe is causing problems for you, a good Windows diagnostic tool may very well help. This is especially effective when it comes to older computers that have accumulated vast quantities of "garbage data" as the result of many software installs and uninstalls.

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