12c Pluggable Database Support:
The database browser’s Pluggable Database tab (visible when a container database is selected in the LHS) now supports: Create pluggable database from seed, clone, or XML File Drop pluggable database Unplug pluggable database Analyze all objects: Added the ability to use DBMS_STATS.GET_PREFS and DBMS_STATS.SET_PREFS (available on Oracle versions 11g and newer). These give you the ability to define and use preferences for different dbms_stats parameters at a database, schema, or table level.
Editor - Refactoring:
Some general tweaks to the rt-click refactoring menu item to better organize and label the actions.
“Convert to Oracle Join Syntax” added - Will convert a query using ANSI syntax to Oracle syntax.
“Remove Subqueries Using ANSI Join Syntax” and “Remove Subqueries Using Oracle Join Syntax” added - Statements having subqueries are rewritten to use join syntax instead.