How to Flashback Primary database with a Standby Configuration

How to Flashback Primary database with a Standby configuration. 
The Quick, Down and Dirty (if you want the why's, please read the documentation)

To Flashback primary database execute following steps :

1. Shutdown primary database .

SQL> SHUTDOWN IMMEDIATE 

2. Start primary database in mount stage

SQL> STARTUP MOUNT

3. Flashback primary database to specified scn

SQL> FLASHBACK DATABASE TO SCN ;
or
SQL> FLASHBACK DATABASE to <restore_point);


4. Open primary database with reset logs. 

SQL> ALTER DATABASE OPEN RESETLOGS; 

5. Cancel media recovery on the standby database. 

SQL> ALTER DATABASE RECOVER MANAGED STANDBY DATABASE CANCEL; 

6. Check current_scn on the standby database, If flashback scn is greater then current_scn then skip next step (step 7). 

SQL> SELECT CURRENT_SCN FROM V$DATABASE; 

7. Flashback Standby database 

SQL> FLASHBACK STANDBY DATABASE TO SCN ; (on standby database) 

8. Start managed recovery on the standby database 

SQL> ALTER DATABASE RECOVER MANAGED STANDBY DATABASE DISCONNECT FROM SESSION;</restore_point);