Doubt on dataguard maximum perfomance mode

Question

HI Gurus ,
We have a dataguard environment configured in 12.1.0.2.0 on OEL 5.6. Dataguard is configured in maximum performance using following congiguration ,
18:26:26 SQL> show parameter log_archive_dest_2
NAME                                 TYPE        VALUE
log_archive_dest_2                   string      service=TGOID NOAFFIRM LGWR ASYNC COMPRESSION=ENABLE VALID_FOR=(ALL_LOGFILES,PRIMARY_ROLE) DB_UNIQUE_NAME=TGOID
Here I used LGWR ASYNC and enabled real time apply at my standby using ,
SQl> alter database recover managed standby database using current logfile disconnect;
Here are my doubts ,
1. If we enable real time apply ,the changes will reflect at standby when a commit happens at primary. is it correct ?
But here I can't see that behavior , the changes are getting applied to standby only when I make a log switch.(as in the case of ARCH transport mode )
2. So if I wish to get the changes done at standby when a commit happens at primary, is I need to set the following ?
First ,
alter system set log_archive_dest_2=service=TGOID AFFIRM LGWR SYNC COMPRESSION=ENABLE VALID_FOR=(ALL_LOGFILES,PRIMARY_ROLE)DB_UNIQUE_NAME=TGOID scope=both;
Secondly,
ALTER DATABASE SET STANDBY DATABASE TO MAXIMIZE PROTECTION/MAXIMIZE AVAILABILITY .
is it correct ?
3. If its correct what is the advantage of using lgwr async in maximum performance ? then what is meant by real time apply in maximum performance ?
Thanks and regards,
Mahi

Answer 1

http://docs.oracle.com/cd/B19306_01/server.102/b14239/create_ps.htm#i1225703
Step 2   Determine the appropriate number of standby redo log file groups
(maximum number of logfiles for each thread + 1) * maximum number of threads