11g New Features:
1. Adaptive Cursor sharing.
2.Adaptive Direct Path Reads.
3.adrci utility for the purge the trace files.
$ adrci
adrci> help
adrci> help
4. SCAN Ip for simplified Cilent Access
5.Automatic restart of single instance.
6.SRVCTL support for single instance.
7. Real Application testing - Database replay
8.Active Datagaurd.