Phase of extraction in a trace file

Oracle version: 11.2.0.3.0 Enterprise Edition
Operating system - IBM/AIX RISC System/6000

I'm trying to generate a trace file from a piece of code executed by the java server. What I asked the java developer to do is to place this block immediately after a connection is established:
BEGIN
  EXECUTE IMMEDIATE 'ALTER SESSION SET TRACEFILE_IDENTIFIER = ''M1''';
  dbms_monitor.session_trace_enable(waits => FALSE, binds => TRUE);
END;
And at the end of the block of logic java code:
BEGIN
  dbms_monitor.session_trace_disable;
END;
I want to know is how many lines the java Server recovers after executing a particular select statement, because they complain about getting less account lines select statement waits.
For example, if I run the same query sql in the sqlplus session, then we'll, I extract say 1000 rows.
When the same query is executed on the side of java, the lines of recoveries are less in number, let's say 500.
And because I doubt it, I wanted to trace to see what is actually executed and how.
The extract of the trace file I see exactly the same query that I myself run in a sqplus session.
There is no precise control over the udnerlying tables in the query.

And my question is, how to interpret the phase EXTRACTION of the slider (for the select statement)?
For example, if I see a FETCH for this cursor, this means that the java server retrieves a single row?
If I see 100 extractions, this means that they recovered 100 lines of the cursor?

Here's a short excerpt from the trace file (please don't crucify me for obvious denormalized tables design, and the request it is not invented by me):
PARSING IN CURSOR #4573587152 len=667 dep=0 uid=737 oct=3 lid=737 tim=17685516462413 hv=954980718 ad='70000006d3e4940' sqlid='69pm96nwfrqbf'
select /* ordered */ o.id, nvl(o.par_id, -1) as par_id, o.NAME_GER, o.NAME_ENG, o.NAME_ESP, o.NAME_ITL,o.NAME_FRA, decode(lo.lflag, 'Y', 'L', 'N') as leaf_or_node, lo.distance + 1 as "LEVEL",  to_char(o.beg_date, 'DD.MM.YYYY HH24:MI:SS'),  o.mais_id, l.path, nvl(o.non_selectable, 'N')  from   st_prod o, lprod_new l, lprod lo where  o.end_date = to_date('31.12.3999', 'DD.MM.YYYY') and   (lo.id, lo.beg_date) in (select id, beg_date from st_prod where par_id is null and end_date = to_date('31.12.3999', 'DD.MM.YYYY')) and   lo.lid = o.id and lo.lid_beg_date = o.beg_date and   l.st_prod_id = o.id and l.st_prod_beg_date = o.beg_date order by lo.distance, o.name_ger
END OF STMT
PARSE #4573587152:c=31,e=152,p=0,cr=0,cu=0,mis=0,r=0,dep=0,og=1,plh=2027551050,tim=17685516462412
EXEC #4573587152:c=80,e=375,p=0,cr=0,cu=0,mis=0,r=0,dep=0,og=1,plh=2027551050,tim=17685516462936

*** 2013-03-11 11:28:09.122
FETCH #4573587152:c=519446,e=892645,p=0,cr=113446,cu=0,mis=0,r=10,dep=0,og=1,plh=2027551050,tim=17685517355715
FETCH #4573587152:c=37,e=59,p=0,cr=0,cu=0,mis=0,r=10,dep=0,og=1,plh=2027551050,tim=17685517359109
FETCH #4573587152:c=39,e=63,p=0,cr=0,cu=0,mis=0,r=10,dep=0,og=1,plh=2027551050,tim=17685517361128
FETCH #4573587152:c=29,e=46,p=0,cr=0,cu=0,mis=0,r=10,dep=0,og=1,plh=2027551050,tim=17685517362849
FETCH #4573587152:c=31,e=48,p=0,cr=0,cu=0,mis=0,r=10,dep=0,og=1,plh=2027551050,tim=17685517364621
<162 more FETCH-es here>
<STAT phase>
CLOSE #4573587152:c=533,e=849,dep=0,type=1,tim=17685517671878
It is possible based on the trace file (if I have to change something in the way of tracing) to determine the number of rows retrieved? 
FETCH #4573587152:c=519446,e=892645,p=0,cr=113446,cu=0,mis=0,r=10,dep=0,og=1,plh=2027551050,tim=17685517355715
FETCH #4573587152:c=37,e=59,p=0,cr=0,cu=0,mis=0,r=10,dep=0,og=1,plh=2027551050,tim=17685517359109
FETCH #4573587152:c=39,e=63,p=0,cr=0,cu=0,mis=0,r=10,dep=0,og=1,plh=2027551050,tim=17685517361128
FETCH #4573587152:c=29,e=46,p=0,cr=0,cu=0,mis=0,r=10,dep=0,og=1,plh=2027551050,tim=17685517362849
FETCH #4573587152:c=31,e=48,p=0,cr=0,cu=0,mis=0,r=10,dep=0,og=1,plh=2027551050,tim=17685517364621

Each FETCH call returns r = number of lines.

Run TKPROF trace file for a readable activity summary.

How to interpret the phase EXTRACTION of the slider (for the select statement)?

The java code uses a default fetchsize to 10 (lines per extraction).

Tags: Database

Similar Questions

  • How simple extraction do more consistent results in trace file,

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    Is this possible? Why is that?

    My last question is to make recursive calls is the value of cr (consisten GETS) increase? If so, what fetch is done of this? first? second? third?

    =====================

    PARSING IN CURSOR #2 len = 23 dep = uid 0 = 85 oct = cover 3 = 85 tim = hv 2197698804 = ad 4069246757 = "7ff5f323410" sqlid = "f34thrbt8rjt5."

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    ANALYSIS # 2: c = 0, e = 80, p = 0, cr = 0, set cu = 0, = 0, r = 0, dep = 0, og = 1, plh is 1445457117, tim = 2197698803

    # 2 EXEC: c = 0, e = 37, p = 0, cr = 0, set cu = 0, = 0, r = 0, dep = 0, og = 1, plh is 1445457117, tim = 2197698938

    WAITING #2: nam ='SQL * Net message to client' ela = driver id 6 = 1111838976 #bytes = 1 p3 = 0 obj #=-1 tim = 2197699018

    FETCH # 2: c = 0, e = 92, p = 0,cr = 5, cu = 0, = 0, r = 1, dep = 0, og = 1, plh is 1445457117, tim = 2197699158

    WAITING #2: nam ='SQL * Net client message' ela = 464 driver id = 1111838976 #bytes = 1 p3 = 0 obj #=-1 tim = 2197699670

    WAITING #2: nam ='SQL * Net message to client' ela = 2 driver id = 1111838976 #bytes = 1 p3 = 0 obj #=-1 tim = 2197699751

    FETCH # 2: c = 0, e = 92, p = 0, cr = 1, cu = 0, = 0, r = 15, dep = 0, og = 1, plh is 1445457117, tim = 2197699827

    WAITING #2: nam ='SQL * Net client message' ela = driver id 10342 = 1111838976 #bytes = 1 p3 = 0 obj #=-1 tim = 2197710219

    WAITING #2: nam ='SQL * Net message to client' ela = 4 driver id = 1111838976 #bytes = 1 p3 = 0 obj #=-1 tim = 2197710375

    FETCH # 2: c = 0, e = 82, p = 0, cr = 1, cu = 0, = 0, r = 15, dep = 0, og = 1, plh is 1445457117, tim = 2197710435

    WAITING #2: nam ='SQL * Net client message' ela = 6642 driver id = 1111838976 #bytes = 1 p3 = 0 obj #=-1 tim = 2197717124

    WAITING #2: nam ='SQL * Net message to client' ela = 3 driver id = 1111838976 #bytes = 1 p3 = 0 obj #=-1 tim = 2197717210

    FETCH # 2: c = 0, e = 59, p = 0, cr = 1, cu = 0, = 0, r = 15, dep = 0, og = 1, plh is 1445457117, tim = 2197717249

    WAITING #2: nam ='SQL * Net client message' ela = 5954 driver id = 1111838976 #bytes = 1 p3 = 0 obj #=-1 tim = 2197723240

    WAITING #2: nam ='SQL * Net message to client' ela = 2 driver id = 1111838976 #bytes = 1 p3 = 0 obj #=-1 tim = 2197723350

    FETCH # 2: c = 0, e = 53, p = 0, cr = 1, cu = 0, = 0, r = 15, dep = 0, og = 1, plh is 1445457117, tim = 2197723389

    WAITING #2: nam ='SQL * Net client message' ela = 5356 driver id = 1111838976 #bytes = 1 p3 = 0 obj #=-1 tim = 2197728775

    WAITING #2: nam ='SQL * Net message to client' ela = 1 driver id = 1111838976 #bytes = 1 p3 = 0 obj #=-1 tim = 2197728843

    FETCH # 2: c = 0, e = 54, p = 0, cr = 1, cu = 0, = 0, r = 15, dep = 0, og = 1, plh is 1445457117, tim = 2197728882

    WAITING #2: nam ='SQL * Net client message' ela = 5827 driver id = 1111838976 #bytes = 1 p3 = 0 obj #=-1 tim = 2197734740

    WAITING #2: nam ='SQL * Net message to client' ela = 3 driver id = 1111838976 #bytes = 1 p3 = 0 obj #=-1 tim = 2197734899

    FETCH # 2: c = 0, e = 83, p = 0, cr = 1, cu = 0, = 0, r = 15, dep = 0, og = 1, plh is 1445457117, tim = 2197734956

    WAITING #2: nam ='SQL * Net client message' ela = 6038 driver id = 1111838976 #bytes = 1 p3 = 0 obj #=-1 tim = 2197741053

    WAITING #2: nam ='SQL * Net message to client' ela = 2 driver id = 1111838976 #bytes = 1 p3 = 0 obj #=-1 tim = 2197741166

    FETCH # 2: c = 0, e = 117, p = 0, cr = 2, set cu = 0, = 0, r = 15, dep = 0, og = 1, plh is 1445457117, tim = 2197741264

    WAITING #2: nam ='SQL * Net client message' ela = 4365 driver id = 1111838976 #bytes = 1 p3 = 0 obj #=-1 tim = 2197745665

    WAITING #2: nam ='SQL * Net message to client' ela = 1 driver id = 1111838976 #bytes = 1 p3 = 0 obj #=-1 tim = 2197745714

    FETCH # 2: c = 0, e = 37, p = 0,cr = 2, cu = 0, = 0, r = 1, dep = 0, og = 1, plh is 1445457117, tim = 2197745738

    "STAT #2 = 1 cnt = 107 pid = 0 pos = 1 obj id = 73948 op ='TABLE ACCESS FULL EMPLOYEES (cr = 15 pr = 0 pw = time 0 = 0 cost = US size 3 = 7383 card = 107)"

    2014-01-04 23:34:20.251

    WAITING #2: nam ='SQL * Net client message' driver ela = id 4200655 = 1111838976 #bytes = 1 p3 = 0 obj #=-1 tim = 2201946471

    ISSUE # 2: c = 0, e = 32, dep = 0, type = 0, tim = 2201946695

    =====================

    Thanks in advance.

    Franck,

    Looks like you think of the freelist management.

    Under the SAMS, the cr number gets reported in the first extraction could be much higher - probably up to 16 - and it still is missing a number of visits due to the segment header block and the blocks of space management. Unfortunately I don't know of a mechanism to track the visit of each block in 11g (which I think is using the OP).

    Concerning

    Jonathan Lewis

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------- ------  -------- ---------- ---------- ---------- ----------  ----------
Parse        1      0.14       0.13          0          0          1           0
Execute      1      6.63     162.12      33540      72921        383           0
Fetch    17272    178.89    1933.95     274835    3147603         20      259063
------- ------  -------- ---------- ---------- ---------- ----------  ----------
total    17274    185.66    2096.21     308375    3220524        404      259063

Misses in library cache during parse: 1
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Elapsed times include waiting on following events:
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  ----------------------------------------   Waited  ----------  ------------
  control file sequential read                    4        0.00          0.00
  db file sequential read                    302812        0.62       1913.89
  latch: cache buffers chains                     3        0.04          0.04
  direct path write temp                        501        0.01          0.30
  SQL*Net message to client                   17272        0.00          0.04
  db file scattered read                        120        0.02          0.63
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  latch: library cache                            3        0.03          0.04
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call     count       cpu    elapsed       disk      query    current        rows
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Parse        1      0.14       0.13          0          0          1           0
Execute      1      6.63     162.12      33540      72921        383           0
Fetch    17272    178.89    1933.95     274835    3147603         20      259063
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total    17274    185.66    2096.21     308375    3220524        404      259063

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  latch: cache buffers chains                     3        0.04          0.04
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  db file scattered read                        120        0.02          0.63
  direct path read temp                         608        0.14          1.71
  SQL*Net more data to client                    15        0.00          0.00
  latch: object queue header operation            1        0.00          0.00
  latch: library cache                            3        0.03          0.04
  latch: library cache pin                        1        0.00          0.00
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call     count       cpu    elapsed       disk      query    current        rows
------- ------  -------- ---------- ---------- ---------- ----------  ----------
Parse       11      0.02       0.01          0          0          0           0
Execute    348      0.20       0.17          0          0          1           0
Fetch      367      0.06       0.37         59       1187          0        3806
------- ------  -------- ---------- ---------- ---------- ----------  ----------
total      726      0.28       0.56         59       1187          1        3806

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Misses in library cache during execute: 10

Elapsed times include waiting on following events:
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    1  user  SQL statements in session.
  348  internal SQL statements in session.
  349  SQL statements in session.
********************************************************************************

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    «SQL * Net message to client "is in fact a wait on the BONE (layers TCPIP).»  Oracle is not clear when the package reaches the customer, he knows only that she has presented the package to the TCPIP services provided by the operating system on the database server.

    Hemant K Collette

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