Defining the time interval at which redo log wil apply to standby:

Here in this post we will learn how to set time interval of redo log application to standby.

How to create a physical standby in oracle 11g:

You can set a delay between the arrival of the archived redo log and it being applied on the standby server using the following commands.

On standby server: 

-ALTER DATABASE RECOVER MANAGED STANDBY DATABASE CANCEL;

-ALTER DATABASE RECOVER MANAGED STANDBY DATABASE DELAY 30 DISCONNECT FROM SESSION;

You may also changed the scenario as NODELAY means redo log will immediately applied using the below command:

-ALTER DATABASE RECOVER MANAGED STANDBY DATABASE CANCEL;

-ALTER DATABASE RECOVER MANAGED STANDBY DATABASE NODELAY DISCONNECT FROM SESSION;

enjoy:-)