How do I calculate the amount of selects out the Oracle database?

Question

First sorry for my bad English.
Would like to know how to calculate the number of queries (SELECTS) held in an Oracle database.
I owe you my thanks, because we solved some issues with the help of his posts, when I know how to calculate the number of completed transactions with commit or rollback, but the company I work all clients perform more procedures than they actually consult a Update finished with commit or any other process, so I need a hand to resolve this issue more.
Thank you in advance.
Anderson Campelo - [email protected] or [email protected]

Answer 1

depending upon how good is good enough, you could just query V$SYSSTAT for appropriate value(s)
  1  select name from v$sysstat where name like '%read%'
  2* order by 1
SQL> /
NAME
DBWR thread checkpoint buffers written
cleanouts and rollbacks - consistent read gets
cleanouts only - consistent read gets
cold recycle reads
data blocks consistent reads - undo records applied
index fast full scans (direct read)
lob reads
no work - consistent read gets
physical read IO requests
physical read bytes
physical read total IO requests
physical read total bytes
physical read total multi block requests
physical reads
physical reads cache
physical reads cache prefetch
physical reads direct
physical reads direct (lob)
physical reads direct temporary tablespace
physical reads for flashback new
physical reads prefetch warmup
physical reads retry corrupt
recovery array read time
recovery array reads
recovery blocks read
redo blocks read for recovery
rollbacks only - consistent read gets
session logical reads
table scans (direct read)
transaction tables consistent read rollbacks
transaction tables consistent reads - undo records applied
31 rows selected.