Problem with DBDesigner4 and MySQL is are solved at various places on the web. However I will post my experience with Username/Password invalid error: I was trying to create a database connection. I created users with null password or same username and password. But nothing worked. Then I started looking for other options provided in the database connection manager. One option worked: select ‘Localhost’, it will ask root password, supply mysql’s root password. Then click over mysql and then create the connection. The username and the password created for mysql will work here.
Another issue is related to the lock file while resetting password using following command line option ‘mysql –user=root –pass mysql’. You need to start mysql server and then this will not show lock error.
Thankyou for the attention.
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