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    <p>Instead of downgrade MySQL gem, it's possible to fix the database name parameter to fix the <code>"bad handshake"</code> problem.</p> <p>I found this: <a href="https://github.com/rubygems/rubygems/issues/423" rel="noreferrer">https://github.com/rubygems/rubygems/issues/423</a> It's working good.</p> <p>Instead of doing a hack in <code>real_connect</code> it's possible to add the <code>"\0"</code> in <code>config/database.yml</code></p> <pre><code>production: database: "itsalive_production\0" adapter: mysql host: localhost encoding: UTF8 ... </code></pre> <p>EDIT<br> If you use the solution with <code>\0</code> at the end of the database name. You probably will find find out this and solve it yourself, but I mention it anyway:<br> (<em>at least in my version of Rails</em>)<br> Using the database string with <code>\0</code> at the end gives problem when doing <code>rake test</code>. It starts with deleting the test database before copying the development database definitions, and then using a SQL command string that includes the test database name. This will cause an <strong>error</strong> because of the <code>\0</code> in the middle of the string.</p> <p>In my case I'm using a local development database that doesn't give any problem so I don't need to have <code>\0</code> in that name.<br> Here is a alternative hack to solve that (original code in <code>mysql_adapter.rb</code>):</p> <pre><code>module ActiveRecord module ConnectionAdapters class MysqlAdapter alias_method :old_execute, :execute def execute(sql, name = nil) #:nodoc: # This is needed because database names can end with "\0" to fix # the issue with "handshake" when mysql server is newer than the gem # requires. E.g. called when loading the new test db when doing "rake test". sql = sql.delete("\0") old_execute(sql, name) end end end end </code></pre>
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