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Discuz! Database Error after a database password change

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If you use web hosting to run a Discuz! forum, you may be unable to access it after changing the database password. This issue can occur if you update the password in the management console without also updating the website's configuration file. This topic describes how to resolve this issue.

Symptom

After you change the database password for your Discuz! forum on a web hosting instance, you receive a Discuz! Database Error message when you try to access the forum. The error details are similar to the following:

Discuz! Database Error
(1045) notconnect
PHP Debug
No.  File                                          Line  Code
1    forum.php                                     56    discuz_application->init()
2    source/class/discuz/discuz_application.php     65    discuz_application->_init_db()
3    source/class/discuz/discuz_application.php     399   discuz_database::init(%s, Array)
4    source/class/discuz/discuz_database.php        23    db_driver_mysql->connect()
5    source/class/db/db_driver_mysql.php            75    db_driver_mysql->_dbconnect(%s, %s, %s, %s, %s, %s)
6    source/class/db/db_driver_mysql.php            88    db_driver_mysql->halt(%s, %d)
7    source/class/db/db_driver_mysql.php            224   break()

Possible cause

You changed the database password in the management console but did not update the password in the website's configuration file.

Resolution

  1. Download the configuration file (config_global.php) to your local host.

    Download the config_global.php file from the /htdocs/config site directory on your web hosting instance to your local host. For detailed steps, see Upload or download website program files.

  2. Modify the database connection information in the config_global.php file.

    1. Use a text editor, such as EditPlus, to open the config_global.php file.

    2. Modify the database connection information in the file.

      In the file, replace the value of the dbpw parameter with the new password you set in the management console. The following code shows an example of the configuration file:

      // ----------------------------  CONFIG DB  ----------------------------- //
$_config['db']['1']['dbhost'] = 'your_database_endpoint';
$_config['db']['1']['dbuser'] = 'your_database_account';
$_config['db']['1']['dbpw'] = 'your_new_database_password';
$_config['db']['1']['dbcharset'] = 'utf8';
$_config['db']['1']['pconnect'] = '0';
$_config['db']['1']['dbname'] = 'your_database_name';
$_config['db']['1']['tablepre'] = 'pretest_';
$_config['db']['slave'] = '';
$_config['db']['common']['slave_except_table'] = '';

    3. Save your changes and close the text editor.

  3. Upload the modified config_global.php file to your web hosting instance.

    Use an FTP client to upload the file to the /htdocs/config directory on your web hosting instance. For detailed steps, see Upload or download website program files.

  4. Access your Discuz! forum again to verify that the issue is resolved.

    If the issue persists, submit a ticket for assistance.