Скачать или смотреть Resolving PostgreSQL Port Already Taken Issues on Windows

Learn how to troubleshoot and fix the error message "could not create any TCP/IP sockets" when your PostgreSQL server startup fails due to a port conflict on Windows.
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This video is based on the question https://stackoverflow.com/q/73745206/ asked by the user 'GrowyTobe' ( https://stackoverflow.com/u/19405918/ ) and on the answer https://stackoverflow.com/a/73745285/ provided by the user 'PlainRavioli' ( https://stackoverflow.com/u/19992892/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Troubleshooting PostgreSQL: Resolving Port Conflicts on Windows

If you are working with PostgreSQL on a Windows system and encounter an error while trying to start your server, you are not alone. Many users face the frustrating issue of their PostgreSQL server failing to start due to port conflicts. In this guide, we will walk you through the problem, examining exactly what happens when the port is taken, and then we will provide a detailed, easy-to-follow solution.

Understanding the Problem

After setting up your PostgreSQL database and trying to start the server, you may encounter errors similar to the following:

[[See Video to Reveal this Text or Code Snippet]]

These messages indicate that the PostgreSQL server cannot bind to the default port (5432), which is the standard port for PostgreSQL communication. The problem usually arises when another application or process is already using that port.

Why Ports are Important

In networking, a port acts as a communication endpoint. Each service on a server listens on a specific port, and if two applications attempt to use the same port simultaneously, a conflict occurs. This is often seen in database management where, if not managed properly, multiple instances can interfere with one another.

Step-by-Step Solution

To resolve the conflict, follow these steps:

Step 1: Identify the Process Using the Port

Open Terminal (Command Prompt):

Press Windows + R, then type cmd and hit Enter.

Check for Listening Processes:

Type the following command and press Enter:

[[See Video to Reveal this Text or Code Snippet]]

This command lists all sockets being used by port 5432 and the process IDs (PIDs) associated with them.

Step 2: Terminate the Conflicting Process

From the output of the previous command, look for a line that looks like this:

[[See Video to Reveal this Text or Code Snippet]]

Here, 18996 is the PID of the process using 5432.

Terminate the Process:

Now, to kill the process using that PID, type the following command and press Enter:

[[See Video to Reveal this Text or Code Snippet]]

Replace 18996 with the actual PID number you found in the previous step.

Step 3: Restart PostgreSQL Server

After successfully killing the conflicting process, try starting your PostgreSQL server again with:

[[See Video to Reveal this Text or Code Snippet]]

Final Thoughts

With these steps, you should have successfully resolved the port conflict that was preventing your PostgreSQL server from starting. Remember that you may encounter port conflicts from different applications. Keeping track of the applications that run on startup can prevent future occurrences of this issue.

If you continue to experience problems, consider checking other applications that may also be using port 5432, and ensure they are either closed or configured to run on a different port.

By understanding how to identify and resolve port conflicts, you empower yourself to manage your PostgreSQL instances more effectively. Enjoy your database management!