Accordion-Like Navigation Menu

By default, it's only possible to expend the side navigation menu children submenu by clicking on the corresponding down arrow.

Here's how you can do if you would like to be able to do the same thing by simply clicking on the list entry text.

On your page 0, create a new dynamic action on page load that is going to run one the following javascript code depending on the target type you have on your list entry

Use this one if you set your target type to URL and your URL target to #

$('#t_Body_nav #t_TreeNav li.a-TreeView-node--topLevel > div.a-TreeView-content:has(a[href="#"])').click(function(){
   $(this).prev('span.a-TreeView-toggle').click();
});

Use this one if you set your target type to - No Target -

$('#t_Body_nav #t_TreeNav li.a-TreeView-node--topLevel > div.a-TreeView-content:not(:has(a))').click(function(){
   $(this).prev('span.a-TreeView-toggle').click();
});

This is going to look at all the top level list entries and if their link is equal to "#" (or if the entry has no link), it's going to trigger the arrow's click event when you click on the list entry text.
So basically, when you click on the text, it's going to be clicking on the arrow as well.

EDIT: If you want to use this for a multi-level menu, the javascript dynamic action code will need to be changed. After debug it, I found out that the submenu items are generated dynamically when expanding it's parent. So the click event from the above code is not registered for the new li tags. We need to

Use this one if you set your target type to URL and your URL target to #

$('#t_Body_nav #t_TreeNav').on('click', 'ul li.a-TreeView-node div.a-TreeView-content:has(a[href="#"])', function(){
   $(this).prev('span.a-TreeView-toggle').click();
});

Use this one if you set your target type to - No Target -

$('#t_Body_nav #t_TreeNav').on('click', 'ul li.a-TreeView-node div.a-TreeView-content:not(:has(a))', function(){
   $(this).prev('span.a-TreeView-toggle').click();
});

You can have a look at my Demo Application

Manually Change SQL Developer Language

If like me your OS is not in English, but you would prefer to have SQL Developer be in English, after looking at all of the preferences options, you will find that there is no option to change SQL Developer's language.

It's still possible to do it manually though.

Here are the steps you need to follow:

• Close SQL Developer 
• From the root of SQL Developer folder, go into the sqldeveloper\bin subfolder.
• Edit the sqldeveloper.conf file
• Append this at the end

#Force English
AddVMOption  -Duser.language=en

SQL Developer should now be in English.