Multitentant miscellaneous New Features
Number of PDBs
In 12cR1 you can have up to 255 PDB, in 12cR2 you can have up to 4096 PDB per Container
Parallel PDB Creation
You can now create PDB in parallel:
create pluggable database dw2 from seed parallel 4;
Hot and Cold Cloning a PDB
You can now clone a PDB while the source PDB is still in READ WRITE mode.
Support for different Character Sets in PDBs
The ideal setting for the character set at the CDB level is AL32UTF8. This allows for maximum flexibility in terms of the PDB character set.
PDB Support for different Time Zones
You can have a different time zone at the PDB level. Note that when you change the time zone for a PDB, it does not actually change any data.