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Come risolvere l’errore di stabilire una connessione al database in WordPress

Viene visualizzato l’avviso “Errore nello stabilire una connessione al database” in WordPress?

Si tratta di un errore fatale che rende il sito inaccessibile agli utenti. Si verifica quando WordPress non è in grado di stabilire una connessione al database. Poiché diversi fattori possono influire su questa connessione, l’errore può essere un po’ difficile da risolvere per i principianti.

In questo articolo vi mostreremo come risolvere facilmente l'”Errore nello stabilire una connessione al database” sul vostro sito WordPress, passo dopo passo.

Fix the Error Establishing a Database Connection in WordPress

Cosa causa l’errore di stabilire una connessione al database in WordPress?

Un database è un software che facilita l’archiviazione, l’organizzazione e il recupero di dati da altri software.

Come sistema di gestione dei contenuti, WordPress utilizza un database per memorizzare tutti i contenuti e gli altri dati del sito web. Si connette quindi al database ogni volta che qualcuno visita il vostro sito web.

WordPress ha bisogno delle seguenti informazioni per connettersi al database:

  • Il nome del database
  • Nome utente e password del database
  • Server di database

Queste informazioni sono memorizzate nel file di configurazione di WordPress, chiamato wp-config.php.

Se una di queste informazioni non è corretta, WordPress non riuscirà a connettersi al server del database e verrà visualizzato l’errore “Errore nello stabilire una connessione al database”.

Database connection error in WordPress

È uno degli errori più comuni di WordPress. Oltre alle credenziali errate, questo errore può comparire anche se il server del database è inattivo o i file del database sono corrotti.

Detto questo, vediamo come risolvere il problema “Errore nello stabilire la connessione al database” in WordPress con una risoluzione dei problemi passo dopo passo.

1. Controllare le credenziali del database di WordPress

Il motivo più comune per cui si verifica un errore di connessione al database è la presenza di credenziali errate. Se avete recentemente spostato il vostro sito WordPress su un nuovo host, è probabile che il problema sia questo.

Le credenziali del database di WordPress sono memorizzate nel file wp-config.php. È il file di configurazione di WordPress che contiene importanti impostazioni, tra cui le informazioni sul database.

Se non avete mai modificato un file wp-config.php, date un’occhiata alla nostra guida per principianti su come modificare il file wp-config.php per maggiori istruzioni.

Si cercheranno le seguenti righe nel file wp-config.php:

// ** MySQL settings - You can get this info from your web host ** //
/** The name of the database for WordPress */
define( 'DB_NAME', 'database_name_here' );
/** MySQL database username */
define( 'DB_USER', 'username_here' );
/** MySQL database password */
define( 'DB_PASSWORD', 'password_here' );
/** MySQL hostname */
define( 'DB_HOST', 'localhost' );

In questo caso, è necessario assicurarsi che le informazioni relative al nome del database, al nome utente, alla password e all’host del database siano corrette.

Potete confermare queste informazioni dalla dashboard del vostro account di hosting WordPress. Per questo tutorial utilizzeremo Bluehost, ma la procedura sarà simile anche per altri pannelli di hosting.

Una volta effettuato l’accesso, fare clic sulla scheda “Sito web” nella colonna di sinistra e poi passare alla scheda “Avanzate”. Quindi, scorrere fino alla sezione “Database” e fare clic sul pulsante “Gestisci” accanto ad essa.

Click the Manage button next to the Database section

In questo modo si aprirà la pagina dei database MySQL in cPanel in una nuova finestra.

Qui, nella sezione “Database corrente”, si trovano il nome del database e il nome utente. Ricordate di copiare e incollare questi dati in un blocco note per poterli aggiungere al file wp-config.

Find your database name and username in the Current Databases section

Quindi, scorrere fino alla sezione “Utenti attuali”, dove è possibile fare clic sul link “Cambia password” accanto al nome del database.

Si accede così a una nuova schermata, in cui è possibile modificare la password del database secondo le proprie esigenze.

Change your database password

Una volta confermati tutti i dettagli del database, è possibile modificare le informazioni nel file wp-config.php, se necessario.

Quindi, provare a visitare nuovamente il sito web per verificare se l’errore di connessione al database è scomparso.

Se l’errore è ancora presente, significa che c’è qualcos’altro che non va.

2. Controllare le informazioni sull’host del database

Se si è certi che il nome del database, il nome utente e la password siano corretti, occorre assicurarsi di utilizzare le informazioni corrette sull’host del database.

La maggior parte delle società di hosting WordPress utilizza localhost come host del database. Tuttavia, alcune società di hosting WordPress gestite utilizzano server separati per ospitare i database. In questo caso, le informazioni sull’host del database non saranno localhost.

Ciò significa che dovrete contattare la vostra società di hosting WordPress per confermare questi dettagli.

3. Riparazione del database di WordPress

Ora potreste ricevere un errore diverso nella dashboard di wp-admin, come “Una o più tabelle del database non sono disponibili” o “Potrebbe essere necessario riparare il database”. In questo caso, è necessario riparare il database.

È possibile farlo aggiungendo la seguente riga nel file wp-config.php. Assicuratevi di aggiungerla subito prima della riga “Questo è tutto, smettete di modificare! Buon blog”:

define('WP_ALLOW_REPAIR', true);

Una volta fatto ciò, è possibile vedere le impostazioni visitando questa pagina: http://www.yoursite.com/wp-admin/maint/repair.php. Assicuratevi di sostituire yoursite.com con il vostro nome di dominio.

A questo punto, è necessario fare clic sul pulsante “Ripara database” per avviare il processo.

Repair WordPress database

Nota: non è necessario che l’utente sia connesso per accedere alla pagina di riparazione del database. Una volta terminata la riparazione e l’ottimizzazione del database, assicurarsi di rimuovere questa riga di codice dal file wp-config.php.

Tuttavia, se non volete aggiungere alcun codice al vostro sito, potete anche riparare il database dal pannello di controllo del vostro account di hosting.

Visitate il vostro account di hosting e aprite la pagina “Siti web” dalla colonna di sinistra. Quindi, passate alla scheda “Avanzate” e fate clic sul pulsante “Gestisci” nella sezione Database.

Click the Manage button next to the Database section

Si aprirà cPanel in una nuova scheda. Qui, scorrere fino alla sezione “Modifica database” e scegliere il nome del database dal menu a discesa “Ripara database”.

Una volta fatto ciò, è sufficiente fare clic sul pulsante “Ripara database” per avviare il processo.

Click the Repair database button

Il pannello di hosting riparerà automaticamente il database.

Una volta completato il processo, verrà visualizzato un messaggio di successo.

Database repair success message

Ora potete visitare il vostro sito WordPress per vedere se l’errore è stato risolto o meno.

4. Controllare se il server di database è inattivo

Se tutto sembra essere corretto e WordPress non riesce ancora a connettersi al database, è possibile che il server del database(server MySQL) sia inattivo.

Questo potrebbe accadere a causa del traffico intenso su un server. Il vostro server host non è in grado di gestire il carico (soprattutto se avete un hosting condiviso).

Per questo motivo, il vostro sito diventerà lento e potrebbe anche dare errore ad alcuni utenti. In questo caso, dovreste telefonare o chattare con il vostro provider di hosting e chiedere se il vostro server MySQL è reattivo.

Inoltre, se sullo stesso server sono in esecuzione altri siti web, è possibile selezionare questi siti per verificare che il server SQL sia giù.

Se non avete altri siti sullo stesso account di hosting, andate semplicemente nel vostro cruscotto di hosting e passate alla scheda “Avanzate”.

Successivamente, fare clic sul pulsante “Gestisci” accanto alla sezione phpMyAdmin.

Click the Manage button next to the PHPMyAdmin option

Si aprirà phpMyAdmin in una nuova finestra, dove si dovrà fare clic sull’opzione “Database” in alto.

Quindi, fare clic sul nome del database per accedere alle sue impostazioni. Se ci riuscite, è il momento di verificare se l’utente del database ha i permessi sufficienti.

Connect PHPMyAdmin with your database

Per farlo, occorre creare un nuovo file chiamato testconnection.php e incollarvi il seguente codice:

<?php
$link = mysqli_connect('localhost', 'username', 'password');
if (!$link) {
die('Could not connect: ' . mysqli_error());
}
echo 'Connected successfully';
mysqli_close($link);
?>

Dopo aver incollato il codice, assicuratevi di sostituire il nome utente e la password con i vostri. Ora è possibile caricare questo file sul proprio sito web e accedervi tramite un browser.

Se lo script si è collegato correttamente, significa che l’utente dispone di permessi sufficienti e che l’errore è causato da qualcos’altro.

Ora è necessario tornare al file wp-config e analizzarlo per assicurarsi che tutti i dettagli siano accurati e senza errori di battitura.

Altre soluzioni che hanno funzionato per gli utenti

Se i suggerimenti per la risoluzione dei problemi di cui sopra non riescono a risolvere l’errore di connessione al database sul vostro sito web, potete provare questi ulteriori passaggi.

Come riportato dai nostri utenti, questi passaggi hanno aiutato alcuni di loro a risolvere l’errore di connessione al database sui loro siti web.

1. Aggiornare l’URL del sito WordPress

Potete provare ad aggiornare l’URL del sito WordPress utilizzando phpMyAdmin in cPanel.

È sufficiente accedere a phpMyAdmin dalla dashboard dell’account di hosting e selezionare il database di WordPress dall’elenco.

Quindi passate al menu SQL in alto e inserite la seguente query MySQL:

UPDATE wp_options SET option_value='YOUR_SITE_URL' WHERE option_name='siteurl'

L’aspetto dovrebbe essere il seguente:

Change site URL

Non dimenticate di fornire l’URL del vostro sito e di cambiare wp_options con il nome della vostra tabella, poiché potreste aver cambiato il prefisso della tabella di WordPress.

2. Riavvio del server Web

Gli utenti di server dedicati, server locali e server privati virtuali (VPS) possono provare a riavviare i loro server.

In questo modo si riavvia il server web e il database, che potrebbe risolvere alcuni problemi temporanei che causano l’errore.

3. Chiedere aiuto

Se tutto il resto non funziona, potrebbe essere necessario contattare la società di web hosting. Tutte le buone società di hosting WordPress vi aiuteranno a risolvere il problema, vi indicheranno la direzione giusta o addirittura lo risolveranno per voi.

Potete anche assumere sviluppatori WordPress utilizzando una piattaforma come WPBeginner Pro Services per aiutarvi a correggere questo problema a prezzi ragionevoli. Abbiamo un team dedicato di sviluppatori esperti di cui potete fidarvi per correggere qualsiasi problema di WordPress.

WPBeginner Pro Services

Inoltre, è possibile utilizzare il servizio per la manutenzione del sito, la riparazione di siti violati, l’ottimizzazione della velocità, la ricostruzione del sito web e l’ottimizzazione SEO.

Speriamo che questo articolo vi abbia aiutato a risolvere il problema “Errore nello stabilire una connessione al database” in WordPress. Potreste anche voler consultare la nostra guida alla risoluzione dei problemi di WordPress per avere suggerimenti su come risolvere i problemi di WordPress da soli, oppure la nostra selezione di esperti dei migliori strumenti per freelance e sviluppatori di WordPress.

Se questo articolo vi è piaciuto, iscrivetevi al nostro canale YouTube per le esercitazioni video su WordPress. Potete trovarci anche su Twitter e Facebook.

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Editorial Staff at WPBeginner is a team of WordPress experts led by Syed Balkhi with over 16 years of experience in WordPress, Web Hosting, eCommerce, SEO, and Marketing. Started in 2009, WPBeginner is now the largest free WordPress resource site in the industry and is often referred to as the Wikipedia for WordPress.

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663 commentiLascia una risposta

  1. Syed Balkhi

    Hey WPBeginner readers,
    Did you know you can win exciting prizes by commenting on WPBeginner?
    Every month, our top blog commenters will win HUGE rewards, including premium WordPress plugin licenses and cash prizes.
    You can get more details about the contest from here.
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  2. Faran

    Thank God I found this article. Replacing wordpress database password and username with my cpanel login credentials got me through it.

  3. Adrian Ramos

    Thank you!

    i solved the problem by changing my new username and password in the wp-config file.

    Regards

  4. Giorgos

    Another solution that worked. Delete the current MySql user and add a new one. It’s a solution for this specific error:
    Access denied for user ‘foo’@’%’ (using password: YES)

  5. Derek Morrison

    Hi, Im a long way in to my blog with txt and pictures however, I am new to this and now finding my uploading of media is freezing 4/5 in and goes to error. Looking on the web found many others have had this problem, however, the common stream is increase image memory I’ve only used 115 MB what’s going on does anyone know? I’m very frustrated as I can try and try for HOURS sometimes to upload
    Thank you

  6. Paul Hutchinson

    Had this error pop up yesterday on my ten year old WordPress installation that is hosted @ GoDaddy.

    Turns out GoDaddy changed the Hostname for the SQL server. updated the DB_Host value and all is working fine.

    Thanks for the detailed post about this issue.

  7. Bhavesh

    I do have same issue with GoDaddy, tried everything out from this post and others.

    but not get any result.

    After heading everything I just tried to change the user name as it was same as database name before.

    and the issue solved.

    so thought the issue is having database and username is same for the DB.

  8. Kaustav Banerjee

    Super effective article. It has just happened with me. The most common mistake of all is the difference between password set for database user from backend and the one mentioned in wp-config .How could I forget this…
    Thanks a lot!!

  9. alex.s

    One thing that needs to be mentioned that if you are using MAMP the password for the database is root as a default. This little thing took me hrs to figure out.

  10. Dlee

    Thanks for this guide, it really saved me! I changed my database password not realizing what would happen, I managed to fix it thanks to this guide though :)

  11. Dev

    If it helps, I would like to add that my particular problem occurred when I updated the password to my database through godaddy, and the wp-config file did NOT update the password, I had to go in manually to change it.

    /** MySQL database password */
    define(‘DB_PASSWORD’, ‘PasswordGoesHere);

    • Jesse Josserand

      I pretty much had to do everything above including changing the password in wp-config. After all that… and editing my sql backup I was restoring so that it used the correct db_name and username and password, as well, everything started work except for errors caused by problems with the super cache plugin. I’m still fighting that issue, but hallelujah to God and all y’all above for getting me this far!

  12. David Kley

    This is why we use Joomla more than WordPress. ;)

    Easier to move, easier to set up quickly, easier to troubleshoot. WordPress makes it a huge pain if you want to move your site to another server or change domains. To each their own though. Each has it’s own set of weaknesses.

  13. Bev

    I have the problem intermittently and randomly. It doesn’t stop the site from working entirely, the ‘error establishing a database connection’ message shows up randomly (both backend and frontend). My host says the problem is a plugin conflict. I’d be happy to test that but because the problem is random, I can’t tell immediately if deactivating a plugin will help. Arrggh!

    • Steph

      We started having this issue recently as well. We contacted our host and they said it sounds like our database is either maxing its connections or our tables are locked during a call (which would most likely happen from a plugin).

  14. Tomas Hujer

    Hi, in my case it was been problem in bad domain values in table wp_blogs. There must be valid domains.

    Good Luck!

  15. Sreekant Shenoy

    Thanks you bro.. very very much..it workd.. :D I am very happy..luv you so much..I am on GoDaddy and i just placed the testfile.php and it workd..Thank you very much <3 <3 <3 <3

  16. Joel Donfak

    I had the same issue with a new website and I finally found that the MySQL username in the CPANEL was not linked to the database. After doing it, it work properly!

    So make sure the problem doesn’t come from there.

  17. Ed

    I changed my MySQL password for security reasons and updated it right away in wp-config but now I get the “Error Establishing a Database Connection” on both front and back end. I know my login credentials work as I can connect fine to phpMyAdmin.

    – I tried a fresh re-install of WordPress via FTP (without overwriting wp-config or wp-content folder) and that didn’t help.

    – I am trying to do the database repair method mentioned above but I can’t even access that page as it won’t let me get past the database connection error.

    – I tried the test connection method and get the following error:

    Deprecated: mysql_connect(): The mysql extension is deprecated and will be removed in the future: use mysqli or PDO instead in /srv/users/serverpilot/apps/xxxxxx/public/testconnection.php on line 2

    Warning: mysql_connect(): Access denied for user ‘root’@’localhost’ (using password: YES) in /srv/users/serverpilot/apps/xxxxxxxx/public/testconnection.php on line 2
    Error: Access denied for user ‘root’@’localhost’ (using password: YES)

    None of these solutions work! Please help someone! I haven’t touched my wordpress site or made any changes prior to the mySQL password update so I know it’s not a wordpress code or plugin issue. Would nginx or cache effect this?

    • dev

      Go to wp-config file and find this:

      /** MySQL database password */
      define(‘DB_PASSWORD’, ‘PasswordGoesHere’);

      Make sure the password matches what you use to log in to your database.

  18. Kyle Coombs

    So, I have always accessed WordPress via the internet and never downloaded the client onto my computer. I’ve always wondered why someone would want to do that and now I think I understand why after receiving this same error message.

    I’m curious, can I do any if I cannot access my WordPress account to make these changes listed? Or do I need to contact my host or hope that problem resolves itself?

    Just checking if there’s anything I can do on the front end.

  19. Dave_Whittle

    I had this error yesterday, and to make a long story short, the solution was as simple as restarting MySQL, i.e. issuing the following commands from the command line:

    sudo mysql stop
    sudo mysql start

  20. Shoaib

    Thanks this one helped me :)
    define(‘DB_HOST’, ‘127.0.0.1:8889’);

  21. mohadsl

    Hi, I have been reading this message over and over when I log in to another domain for my WordPress. Please help

    Error: Unable to find the specified administrator account in WordPress. Specify the username of your administrator’s account in WordPress. This account will be associated with Plesk.

  22. Kurtis

    I was trying to load my website (from backups) to a new hosting company today. It was tricky figuring out how to make it work. Ended up installing and uninstalling a bunch of times due to some mistakes. I first tried loading my wordpress files via FTP and creating a new Mysql database manually in my hosting control panel, but I could not get the two to see eachother and could not import my backed up SQL file to the new database, finally figured out (after some trial and error), i needed to install a fresh wordpress from my hosting control panel which installs wordpress for me and creates a database. Once there is a linked database you can drop all the tables, and import the backed up database. I would then upload my wordpress backup via FTP on top of the fresh install and choose ‘Overwrite’. When it finished, I had the front page of my website showing up like it was working, but all the pages were “object not found, no database, or page outdated, please notify the author, etc.”…. I tried repairing/optimizing the database, which did not help…. I updated my wp-config file with the right database info, which did not fix it….So I uninstalled everything and started over many times (uninstalling reinstalling with the same results — FINALLY WHAT WORKED. fresh wordpress install via my control panel, I used the same username password for the admin that I previously had used on my old site (this helped my new wordpress “see the mysql backup” better once I imported it), then FTP the wordpress backup files on top of the fresh install with overwrite option. change the wp-config code to the new database info (mine was a new database name/pw everytime i reinstalled wordpress). After I did all of this I was getting the front page but still getting “object not found” pages for everything else. BUT now I could login to my admin…. once I was at this point, I realized that wordpress or the server wass checking itself (updating itself) after all of the major changes I had made via FTP and MySQL…. basically just wait, I think I waited a half hour to an hour and I started seeing my other pages (without graphics), took a nap, and then all the pages were there. I only had a few pages and posts but after such major changes, the server had to catch up and verify itself, I think…

  23. Jhood

    Just wanted to share my experience – I received this error when I created my account in cPanel with a user name that was more than 8 characters long. Apparently it confused the WordPress installer, and it couldn’t create the database.

    So I just deleted the entire Cpanel account and started over with a cPanel user name of 8 characters – worked like a charm!

  24. Sarah Baker

    I tried just about all these things and nothing worked – just about but not all. I’m not an expert but not a beginner. Finally, I decided to delete the account from the server (new site with no data yet), start over, and install WordPress manually. I use Rochen which uses cPanel and Fantastico and it’s only been recently that I’ve been having this problem.

    Installing manually worked fine and I had no problems. Will be submitting a support ticket to Rochen for sure.

  25. Penina

    I built my site on an Amazon ec2 instance and frequently get the Error establishing database connection on both the frontend and backend. what I do that always solves the problem is telnet into the server and restart mysqld. But I was wondering what the underlying issue was that is always causing this error to recur. any ideas??

    • shaun2k

      You’re running out of RAM and memory management is killing your mysqld process. You will need to upgrade to an instance that has at least 2GB RAM. I’m tipping you’re on free tier and you have 1GB of RAM.

  26. KyleM

    For me what worked was changing localhost entry in wpconfig.php to 127.0.0.1; they may work with out doing all of the above so its a quick. I must say all this data above was a good start for me to understand the problem and root cause.

  27. Christina Torres

    Totally random, and maybe this is dumb, but I realized my problem on Mac was that it kept changing a regular ‘ into a stylized one in text edit every time I added in my username, password, database name, etc, even as a text file. weird. anyway, thanks for the help!

  28. Colin Murphy

    Just incase other people have had the same issue you get this error also on a multisite installation if the URL’s in the wp_blogs are not set correctly . I had this issue this morning when moving the site from my dev version to staging.

  29. Jack Bobeck

    I just experienced it on our site, first time. So I did as you recommended, called Bluehost, our host provider to find out WTH? They said that our database is limited to 15 connections at once, and that because of activity, when you hit that ceiling, you get that error. So they suggested we run a test on all of our plugins and see if there are some that are hogging connections, then run a program that converts our pages to HTML pages as a backup, in case people want to access the site as a backup and do so in a quicker manner. I hope this makes sense, not an expert web guy, but just repeating best I can. But best thing to do first is contact your host provider for answers.

    Jack

  30. Ryan Turner

    I just had the same problem for my site. Went through the article and didn’t see anything out of the ordinary. messing around in wordpress I reset my ‘WP Super Cache’ plugin to the defaults and cleared it out and my site started working again.

  31. Ali Khan

    Doesn’t let me sign into phpmyadmin from my cPanel, saying account is not verified.

  32. Daniel DeNewasha

    Intermittently I get the following error visiting the site. There’s absolutely nothing on major search engines with this error number alone. I can get to wp-admin, which is the sites login page with theme loaded, etc. and login. In Admin, I can do anything with no issues. Sometimes I can visit the site, other times not, even in different browsers, e.g., on refresh may or may not appear. Have done the repair and settings show no errors. I am on Godaddy shared hosting. Just finished building site so very little content, DB incredibly small 2mb on export.

    “ERROR 677-402iqz. We’re sorry, error reading database, missing or
    corrupt. This website is no longer unavailable.”

    Any ideas anyone?
    Thanks
    Daniel

  33. WPBeginner Staff

    WordPress stores all your site’s information in a database, which is managed by a database server. If for some reason WordPress is unable to connect to the database server then you will get this error. Please contact your web hosting provider for support.

  34. terry

    I was trying to fix non appearance of widgets on my site when I got
    “Could not connect to the DB Server!”
    . Even when I just enter the site in the address box or include wp-admin.
    I have no idea now. Just assume I am a 5 year old idiot if you reply.

  35. Syed Balkhi

    If you’re getting on a welcome screen, then it means that you replaced your database credentials.

  36. john

    Hi my site has been off since this morning telling me Error establishing a database connection in french since it is a french website http://c2cteaching.com
    I called my host who told me to modify my wp-config.php, and since we did I land on a welcome setting page of wordpress ! I’m getting crazy, what can i do ? help me please !

  37. Vijay

    Hi, I had this error show up on our primary domain, add-on domains and a sub-domain.

    I use GoDaddy for hosting.

    Long story short: We found that because for some reason the MySQL databases table inside hosting > databases didn’t have any users attached to the databases that the sites were showing this particular error.

    Just below that table on the right hand side, there is a ‘Add User to Database’ section. I assigned each user to a database. So, i388299_wp1 was selected as user and i388299_wp1 was selected as the database and all the sites started working fine again.

    So, there is a bug in GoDaddy that causes users to be deleted from that list for some strange reason.

  38. karelles

    I was trying to clean up and tossed some mysql servers (they’re all one anyway) that I thought I wasn’t using and one of my site alarms went off. Sure enough that site was using the server that I tossed. Changed to a different server (as I said they’re all one) in the wp-config file and all was again well. Thanks!!!

  39. Vonnie Hudson

    I had this problem today on my VPS. Error establishing connection to Database. Checked disk space and confirmed it was fine but memory usage was almost depleted. I ran sudo free -m and top to find the biggest offenders but couldn’t really figure it out. I had something like 5MB of RAM left. I even rebooted the server but that didn’t fix it. So I just waited and eventually it came back – my only guess at this point is that my server was inundated with too much traffic. But it’s a VPS so I don’t know what’s going on. I hope this doesn’t happen again tomorrow –

    • random guy

      You need to get a fully managed cpanel VPS so that someone that knows what they are doing can assist you.

      When you have 5mb of ram left, you are stuffed. The server would be slowing down immensely. From here, upgrading the ram, or installing cpnigix, or having someone fine tune the VPS, can all reduce your ram usage and improve performance.

  40. rookie

    Thank you so much for your help.

    I am just a rookie that had to do this job.

    This helped me:

    1define(‘DB_NAME’, ‘database-name’);

    2define(‘DB_USER’, ‘database-username’);

    3define(‘DB_PASSWORD’, ‘database-password’);

    4define(‘DB_HOST’, ‘localhost’);

  41. Gorillaz

    I justed wanted to thank you very much.
    You saved my day.

  42. Luke

    I rebooted my server. Problem solved. You might want to mention that first in the article. Saves time, lol.

    Log into ubuntu 12.04 -> Reboot

    • Jack

      I had this same issue. I rebooted the server, problem resolved but wp-admin panel is running too much slow since i rebooted the server. Any idea?

  43. vanda

    I met a problem , I can’t go to front end it show the message that
    “Error establishing a database connection” of my page I did it on localhost, what can I do?

  44. WPBeginner Staff

    Jacob, it seems like your database server is frequently down. Contact your web host or switch to a better WordPress Hosting provider.

    As for the facebook issue we will recommend you to use WordPress SEO by Yoast. Once it is activated go to SEO -> Social and check the box next to Add Open Graph meta data.

    • Aaron Winters

      I’m having same issue as Jacob had, but on my local install. In the time it takes to make an edit of any sort, I sporadically get sent to the “Error establishing a database connection” page. (Only on Admin side) 1 in 5 times it actually forwards past it on its own and completes the update, otherwise I have to copy the entire post, paste over the old, submit over and over until it finally accepts. Also happens on image uploads. No problem on the remote host that I know of.

  45. Jacob Wall

    I get the error sporadically – only when I’m signed into my admin account. Although one blog reader did inform me that once it took her 4 attempts to load the main page. It never lasts long, but happens often (4 or 5 times a day?).

    Also, while I am writing blogs, I will often get a “Connection to server lost” error, and then I have to wait for it to reconnect before I can save. As I said, it never lasts more than about 15 minutes, but often enough so it makes writing blog posts a very time consuming process.

    Finally, when I try to share on FB, the preview doesn’t show up – only a link. I have know idea if these three errors are related, but they seem to show up around the same time, and all three are too frequent.

  46. Deepika Arodhiya

    I have change my hosting. How to proceed? Getting error:

    Error establishing a database connection

  47. uvraj

    I have anothere issue here.. the posts are working fine. but in the main url, the error “error establishing database connection” is appearing? Is there something with my theme? I am not able to figure it out…..

  48. JD

    Thank you! Appreciate the post. Worked for me, although had to do a combination of the methods stated!
    Thanks!

  49. zuecell

    all my wp on my host error :( should i check one by one :(

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