Chapter 12 . Security 333 (Free php web host) When using the
Chapter 12 . Security 333 When using the SET PASSWORD statement, MySQL sees the change immediately. However, when using an UPDATE statement, whether for updating a password or changing another parameter, you must issue the FLUSH PRIVILEGES statement for the change to take effect. Common Problems Though there are many problems that on their face appear to be authentication problems, they are really related to server or other operating system issues. Those types of errors are hopefully covered elsewhere in this book. This section specifically examines some common error messages related to authentication. In addition, a recurring issue surfaces: Too often, people forget the root password for MySQL. I d like to think that they forget because MySQL is so stable that they don t need to connect to it for administration tasks. Regardless, I ll look at how to change the root password if you do forget it. Access denied There are numerous reasons why you might receive an Access Denied error message when attempting to perform an operation. For that matter, you might get one simply by trying to connect to a MySQL server. This section examines the most common of these messages, which include the following: . Password: Personally speaking, my most common cause of an Access Denied error is because I can t type my password straight. Therefore, this is the first thing that comes to mind when thinking of items to check when you receive an Access Denied error. . Username: Is it allowed to connect? . Hostname or host: MySQL might not be able to properly identify the user/host combination, in which case it refuses access. The MySQL CLI is very good at remembering and telling you what was provided to it for credentials. I ve provided some examples of error messages in Figure 12-22:
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