System Overview What's New in Oracle Exadata Database Machine New Features for Oracle Exadata System Software Release 12.x What's New in Oracle Exadata Database Machine 12c Release 1 (12.1.2.1.1) Leap Second Time Adjustment 10.5.5 Leap Second Time Adjustment This release contains leap second support in anticipation of the June 30, 2015 leap second adjustment. Parent topic: What's New in Oracle Exadata Database Machine 12c Release 1 (12.1.2.1.1)