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Description

This error indicates that MySQL encountered an issue parsing a data source connection string. It typically occurs when attempting to establish a connection to an external data source or a linked server, and the provided string does not adhere to the expected syntax or format.

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Error Message

The data source connection string '%s' is not in the correct format

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Known Causes

3 known causes

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Malformed Syntax

The connection string contains syntax errors, such as missing semicolons, unquoted values, or incorrect keyword-value pairs.

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Unrecognized Parameters

The connection string includes parameters or keywords that are not recognized or supported by the specific data source driver or MySQL's FDW configuration.

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Incomplete String

Essential components like server address, database name, or authentication details are missing from the connection string.

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Solutions

3 solutions available

1. Verify Connection String Syntax easy

Ensure the connection string adheres to the expected format for your MySQL client or application.

1

Review the documentation for the specific MySQL client or programming language library you are using. Common formats include:

mysql://user:password@host:port/database

OR

Server=your_host;Database=your_database;Uid=your_user;Pwd=your_password;

OR (for some drivers)

host=your_host;port=3306;user=your_user;password=your_password;database=your_database;

2

Carefully check each component of your connection string for typos, missing or extra characters, and correct casing.

3

Pay close attention to delimiters like colons (:), at symbols (@), equals signs (=), and semicolons (;). Ensure they are used correctly according to the expected format.

2. Use Standard MySQL Connection Parameters medium

When building connection strings programmatically, leverage standard parameters like host, port, user, and password.

1

If you are constructing the connection string within an application (e.g., Python, Java, PHP), use dedicated connection objects or functions provided by your MySQL connector library. These often abstract away the direct string formatting.

Python example using mysql.connector:

import mysql.connector

try:
    conn = mysql.connector.connect(
        host="localhost",
        user="your_username",
        password="your_password",
        database="your_database"
    )
    print("Connection successful")
    conn.close()
except mysql.connector.Error as err:
    print(f"Error: {err}")

2

If a direct string format is required, ensure you are escaping any special characters within the username or password if necessary, although this is less common with standard MySQL authentication.

3. Check MySQL Client/Driver Configuration medium

The error might stem from an incorrect configuration of the MySQL client or the specific driver used by your application.

1

If you are using a MySQL command-line client (like `mysql` or `mysqldump`), verify the arguments you are passing. For example, when using `--host`, `--user`, `--password`, and `--database` flags, ensure they are correctly specified.

mysqldump -h your_host -u your_user -p your_database > backup.sql

2

If you're using a programming language, check the version and installation of your MySQL connector/driver. An outdated or corrupted driver might misinterpret connection strings.

Example: In Node.js with `mysql2` package:

const mysql = require('mysql2');

const connection = mysql.createConnection({
  host: 'localhost',
  user: 'your_username',
  password: 'your_password',
  database: 'your_database'
});

3

Reinstalling or updating the MySQL connector/driver can resolve issues related to incorrect parsing of connection strings.

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Related Errors

5 related errors

MySQL Error 1433: Invalid Connection String Format