ERROR: SQLSTATE[HY000] [2002] No connection could be made because the target machine actively refused it

Question

An error suddenly occurred while I was debugging my code. It has this series of errors regarding the connection to database.

ERROR: SQLSTATE[HY000] [2002] No connection could be made because the target machine actively refused it.
( ! ) Fatal error: Uncaught exception 'PDOException' with message ' in C:\wamp\www\web\main\users.php on line 15
( ! ) PDOException: SQLSTATE[HY000] [2002] No connection could be made because the target machine actively refused it. in C:\wamp\www\web\main\users.php on line 15

this is the code of where the error is pointing

function __construct()
        {
            $this->con = new PDO("mysql:host=".$this->host.";dbname=".$this->db,$this->user,$this->pass);
        }

I don't know what to do since I do not usually get problems like this so I haven't studied much about WAMP. Thank You for your help.

Answer 1

If the WAMP icon is Orange then one of the services has not started.

In your case it looks like MySQL has not started as you are getting the message that indicates there is no server running and therefore listening for requests.

Look at the mysql log and if that tells you nothing look at the Windows event log, in the Windows -> Applications section. Error messages in there are pretty good at identifying the cause of MySQL failing to start.

Sometimes this is caused by a my.ini file from another install being picked up by WAMPServers MySQL, normally in the \windows or \windows\system32 folders. Do a search for 'my.ini' and 'my.cnf' and if you find one of these anywhere outside of the \wamp.... folder structure then delete it, or at least rename it so it wont be found. Then restart the MySQL service.

Answer 2

I had a similar issue when trying to migrate a Drupal website from one local host to another. From Mac running XAMMP to Windows running WAMP.

This was the error message I kept getting when trying to access the pages of the website.

PDOException: SQLSTATE[HY000] [2002] No connection could be made because the target machine actively refused it. 
in drupal_get_installed_schema_version() (line 155 of C:\wamp\www\chia\includes\install.inc).

In settings.php, I've changed everything correctly, database name, user and password.

$databases = array (
  'default' => 
  array (
    'default' => 
    array (
      'database' => 'mydatabasename',
      'username' => 'mydbusername',
      'password' => 'mydbpass',
      'host' => 'localhost',
      'port' => '8889',
      'driver' => 'mysql',
      'prefix' => '',
    ),
  ),
);

After a couple of hours of mindless google searching I've changed the port to a empty value:

'port' => '',

And after that the site loaded properly.

Answer 3

Possibly using different Port for MySQL than using in your Code

$conn = new PDO("mysql:host=".SERVER_NAME.";port=3307;dbname=".DB_NAME, DB_USER, DB_PASS);

Both ports should be same.

Answer 4

Restart your wampServer... that should solve it. and if it doesn't.. Resta

Answer 5

Ensure your WAMP Server (or XAMP) is working, i.e. the wamp icon should be green.

Answer 6

Delete the following files from the directory:

\wamp\bin\mysql\mysql5.6.17\ib_logfile0
\wamp\bin\mysql\mysql5.6.17\ib_logfile1
\wamp\bin\mysql\mysql5.6.17\ibdata1

This solved my problem.

Answer 7

You should restart your Xampp or whatever server you're runnung, make sure sq

Answer 8

I've had the same issue too, I didn't remember to start my WAMPSERVER, and so the connection couldn't be made... All you need to do is to start or restart your WAMPSERVER or your XAMMP again and it will work....

Answer 9

All you have to do it insert you exact db details and restart your mysql server

Answer 10

if you are using XAMPP and WAMP together in the same machine add sql server port number

<connection>
                <host><![CDATA[localhost:3390]]></host>
                <username><![CDATA[root]]></username>
                <password><![CDATA[]]></password>
                <dbname><![CDATA[sritoss_1910]]></dbname>
                <initStatements><![CDATA[SET NAMES utf8]]></initStatements>
                <model><![CDATA[mysql4]]></model>
                <type><![CDATA[pdo_mysql]]></type>
                <pdoType><![CDATA[]]></pdoType>
                <active>1</active>
</connection>

Answer 11

I had the same problem, I just deleted all log files in mysql/data files like:

mysql-relay-bin - 2020@002d...

Just these files and it worked.
I hope this helps.

Answer 12

Check whether MySQL server is running at all. If you not run apache server(or any server you use) this could happen. After run your local server and refresh the page.

Answer 13

Just restart your wamp server and then run php bin/magento cache:clean

Answer 14

I had the same problem and I searched a lot in web but no solution worked for me .finally I noticed by chance that mysql is using port 3308 instead of port 3306 which seems to be default ,,, I changed the port to 3306 and surprisingly it worked :) .... (my problem was in connecting php to mysql database, php my admin page was shown perfectly)

Answer 15

'dsn' => 'mysql:host=localhost;port=3307;dbname=yourdbname',

Answer 16

I was getting this error attempting to run "php artisan migrate" on Windows with a virtual box / vagrant / homestead installation.

The documentation said I had to run this command on the virtual machine.

This worked!!!

make sure to do it inside your current project folder.