How to start/stop Dataguard Physical Standby Database

SHUTDOWN
===========
STATUS OF MRP0:

NON-RAC:
select process,status,client_process,thread#,sequence#,block#,blocks,delay_mins from v$managed_standby;
RAC:
select inst_id,process,status,client_process,thread#,sequence#,block#,blocks,delay_mins from gv$managed_standby;

cancelling mrp:
recover managed standby database cancel;

shut immediate;

STARTUP
=========
startup nomount;

alter database mount standby database;

STARTING MRP0
================
If a non-real-time apply standby then issue the following SQL statement to start Redo Apply:

alter database recover managed standby database disconnect from session;
--OR--
RECOVER MANAGED STANDBY DATABASE DISCONNECT FROM SESSION PARALLEL 64;

SQL> SELECT open_mode FROM V$DATABASE;

OPEN_MODE
--------------------
MOUNTED

If a real-time apply standby then issue the following SQL statement to start Redo Apply:

alter database recover managed standby database using current logfile disconnect from session;

SQL> SELECT open_mode FROM V$DATABASE;

OPEN_MODE
--------------------
READ ONLY WITH APPLY

Now that the standby is in real-time query mode (that is, the standby is open in read-only mode and Redo Apply is active).

STATUS OF MRP0:

NON-RAC:
select process,status,client_process,thread#,sequence#,block#,blocks,delay_mins from v$managed_standby;
RAC:
select inst_id,process,status,client_process,thread#,sequence#,block#,blocks,delay_mins from gv$managed_standby;

OPEN_MODE = READ ONLY WITH APPLY
--------------------------------

alter database open readonly;