title: How can I change the language (to english) in Oracle SQL Developer?
body: <p>I am running a non-english Windows 7 system, and apparently Oracle SQL Developer (version 3.0.04.34, 64-bit) tries to auto-guess my preferred language based on the OS. Is there any way to change the language to english?</p>
  
  <p>I've tried the tip found at <a href="http://misteratmisis.com/infotech/how-change-oracle-sql-developer-interface-japanese-english">http://misteratmisis.com/infotech/how-change-oracle-sql-developer-interface-japanese-english</a>, namely adding the VM options</p>
  
  <pre>
  AddVMOption -Duser.language=en
  AddVMOption -Duser.country=US
  </pre>
  
  <p>to file ide.conf in directory</p>
  
  <pre>
  /ide/bin
  </pre>
  
  <p>within the SQL Developer installation directory, as suggested, but that didn't help.</p>
  
  <p><strong>Solution (edited on 13.09.2012):</strong></p>
  
  <p>I decided to try again the solution proposed by Alex K. and this time it worked, namely adding</p>
  
  <pre><code>AddVMOption  -Duser.language=en
  </code></pre>
  
  <p>to the file <code>sqldeveloper.conf</code> file located in <code>sqldeveloper\bin\</code> folder. I presume that it did work now but not before, because meanwhile I have changed my UAC (user access control) settings in Windows 7 so that I am administrator by default. What happened before was probably that even though the changes appeared to be there, the configuration file read by the program was another one (shadow copy).</p>
  
  <p><strong>Solution for Mac OS X (added on 26.02.2016):</strong></p>
  
  <p>Edit file at</p>
  
  <p><code>/Applications/SQLDeveloper.app/Contents/Resources/sqldeveloper/sqldeveloper/bin/sqldeveloper.conf</code> </p>
  
  <p>and add the line</p>
  
  <pre><code>AddVMOption  -Duser.language=en
  </code></pre>
  
  <p>(Tested with SQL Developer 4.1.3.20)</p>