In oracle 12.2 version, we can perform flashback at PDB level also.It has no dependency on container.

EXAMPLE:

Create a restore point at PDB level:

Now before doing flashback, we have to check whether what is the undo type, whether local undo or shared undo.

SEE ALSOLocal undo and shared undo in oracle 12.2 Multitenant

FLASHBACK WHEN LOCAL_UNDO is enabled:

We have performed flashback succesfully. But if we are using shared undo, then follow steps as below.

FLASHBACK WHEN LOCAL_UNDO is enabled: