How To Know If DB Is Loaded Using AWR

problem is: Our HFM application is running very slow, but we don't know where the bottleneck is. I would like to prove that the DB is not the one causing the issue.

solution: Show AWR metrics that indicate that utilization of the DB

I've been reading thru a lot of articles in the net (Oracle sites and others), but I cannot find a clear AWR baseline that will tell me if my database is heavily loaded. how much of my DB capacity am I using in a said time period. The different OEM graphs show: During non-peak: DB is relatively Idle Peak time: the graph suggest we are just using 30-40% of max capacity. This is when a dataload into the DB happens

So, is my DB loaded if my AWR Load Profile stats are:

CODELoad Profile              Per Second    Per Transaction   Per Exec   Per Call
~~~~~~~~~~~~         ---------------    --------------- ---------- ----------
DB Time(s):                1.0                0.3       0.00       0.00
DB CPU(s):                0.8                0.3       0.00       0.00
Redo size:          408,893.4          125,411.1
Logical reads:            5,606.3            1,719.5
Block changes:            2,119.2              650.0
Physical reads:              455.9              139.8
Physical writes:               83.0               25.5
User calls:              469.4              144.0
Parses:               82.4               25.3
Hard parses:               44.5               13.7
W/A MB processed:        2,383,203.7          730,949.0
Logons:                0.2                0.1
Executes:              345.9              106.1
Rollbacks:                0.0                0.0
Transactions:                3.3

CODETop 5 Timed Foreground Events
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
                                                           Avg
                                                          wait   % DB
Event                                 Waits     Time(s)   (ms)   time Wait Class
------------------------------ ------------ ----------- ------ ------ ----------
DB CPU                                            8,687          79.5
db file sequential read           1,699,159       1,539      1   14.1 User I/O
log file sync                        35,518         170      5    1.6 Commit
direct path read                    418,577         165      0    1.5 User I/O
enq: TX - index contention            8,136         121     15    1.1 Concurrenc
Host CPU (CPUs:   64 Cores:    8 Sockets:    1)
~~~~~~~~         Load Average
Begin       End     %User   %System      %WIO     %Idle
--------- --------- --------- --------- --------- ---------
1.03      1.29       1.7       0.5       0.0      97.8

Server Stats show CPU is 975 idle

Snap TimeLoad%busy%user%sys%idle%iowait
04-Aug 12:00:591.45
04-Aug 13:00:051.003.082.550.530.0096.92
04-Aug 14:00:111.291.951.460.490.0098.05