Am I right ? on Query run time

Am i right?

I am looking for run time of the query, and there multiple ways to get this, but here is the conflicting information

I enabled \timing in vsql to capture the run time of query , and the tried to fetch the same information from system tables query_request and query_profile,  the time show by query profile or request is same and matches , but does not match to vsql timing ? 

can i say that additional time show by vsql is the time consumed is due to network latency...( the time result is out and shown on my client tool )

here is what i did

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odm_poc_owner=> select /*+label(cputest)*/ * from dual;

 dummy 

-------

 X

(1 row)

Time: First fetch (1 row): 12.522 ms. All rows formatted: 12.561 ms

odm_poc_owner=> SELECT 

odm_poc_owner-> transaction_id

odm_poc_owner-> ,statement_id

odm_poc_owner-> ,user_name

odm_poc_owner-> ,MEMORY_ACQUIRED_MB

odm_poc_owner-> ,START_TIMESTAMP

odm_poc_owner-> ,END_TIMESTAMP

odm_poc_owner-> ,REQUEST_DURATION_MS

odm_poc_owner-> ,substr(request,1,40)

odm_poc_owner-> FROM v_monitor.query_requests 

odm_poc_owner-> where IS_EXECUTING = 'f' 

odm_poc_owner-> and request like '%cputest%'

odm_poc_owner-> Order by START_TIMESTAMP desc limit 3;

  transaction_id   | statement_id |   user_name   | MEMORY_ACQUIRED_MB |        START_TIMESTAMP        |         END_TIMESTAMP         | REQUEST_DURATION_MS |                 substr                  

-------------------+--------------+---------------+--------------------+-------------------------------+-------------------------------+---------------------+-----------------------------------------

 45035996303895510 |           46 | odm_poc_owner |                100 | 2014-12-19 12:46:49.560056+00 | 2014-12-19 12:46:49.568195+00 |                   8 | select /*+label(cputest)*/ * from dual;

(1 row)

Time: First fetch (1 row): 7186.702 ms. All rows formatted: 7186.772 ms

odm_poc_owner=> 

odm_poc_owner=> select

odm_poc_owner-> transaction_id

odm_poc_owner-> ,statement_id 

odm_poc_owner-> ,schema_name  

odm_poc_owner-> ,projections_used 

odm_poc_owner-> ,query_duration_us

odm_poc_owner-> ,query_start

odm_poc_owner-> ,query_type

odm_poc_owner-> ,user_name

odm_poc_owner-> ,processed_row_count

odm_poc_owner-> ,reserved_extra_memory

odm_poc_owner-> ,substr(query,1,40)

odm_poc_owner-> FROM v_monitor.query_profiles

odm_poc_owner-> where  query like '%cputest%' 

odm_poc_owner-> order by query_start desc limit 3;

  transaction_id   | statement_id | schema_name |    projections_used    | query_duration_us |          query_start          | query_type |   user_name   | processed_row_count | reserved_extra_memory |                  substr                  

-------------------+--------------+-------------+------------------------+-------------------+-------------------------------+------------+---------------+---------------------+-----------------------+------------------------------------------

 45035996303895510 |           46 |             | query projection_usage |       8139.000000 | 2014-12-19 12:46:49.560056+00 | QUERY      | odm_poc_owner |                   1 |                     0 | select /*+label(cputest)*/ * from dual;

(3 rows)

In vsql it is = Time: First fetch (1 row): 12.522 ms. All rows formatted: 12.561 ms

Query_profile =  query_duration_us  ( 8139  Micro seconds) or 8.139 Milli sec

Query Request =  REQUEST_DURATION_MS  ( 8 MS)

So is my inference correct ?

Is there any way to know the time taken due to  network latency  ?