Pstop in solaris to stop query

Question

This is just question for curiosity. May be i am wrong but please help me in understanding this.
Below is the details where i am using one test table created from dba_objects.
What i did is i ran first select * from test and the other one with pstop that pid from different session.
Both are almost same. Also i had flushed shared/buffer cache 2-3 time before each test. So, both are doing same.
DB Version : 10.2.0.3 Solaris SPARC 64
SEGMENT_NAME                       BYTES      BLOCKS
TEST                               6291456    384
Statistics (From select * from test without pstop)
        504  recursive calls
          0  db block gets
       3714  consistent gets
        341  physical reads
          0  redo size
    2611800  bytes sent via SQL*Net to client
      36512  bytes received via SQL*Net from client
       3277  SQL*Net roundtrips to/from client
          4  sorts (memory)
          0  sorts (disk)
      49128  rows processed
Statistics (From select * from test with 2 times pstop)
        504  recursive calls
          0  db block gets
       3714  consistent gets
        343  physical reads
          0  redo size
    2611800  bytes sent via SQL*Net to client
      36512  bytes received via SQL*Net from client
       3277  SQL*Net roundtrips to/from client
          4  sorts (memory)
          0  sorts (disk)
      49128  rows processed
But from mystat there is a difference. Here is how i had ran
set autotrace on;
alter system flush shared_pool;
alter system flush buffer_cache;
create table x1 as select sn.name, ms.value from v$mystat ms, v$statname sn where ms.statistic# = sn.statistic# ;
select * from test;
create table x2 as select sn.name, ms.value from v$mystat ms, v$statname sn where ms.statistic# = sn.statistic# ;
select y1.name,y1.value,y2.value,y2.value-y1.value from y1,y2 where y1.name=y2.name order by 1;
From 1st and 2nd result there is difference with(Run Difference).
                                                                 First     Second
physical read bytes                                             6504448     10633216
physical read total IO requests                                   84     332
physical read total bytes                                   6569984     10698752
physical read total multi block requests                    28     29
physical reads                                                       397     649
physical reads cache                                             397     649
physical reads cache prefetch                                   317     321
physical reads prefetch warmup                                   21     25
recursive calls                                                     4021     16397
sorts (memory)                                                       71     332
sorts (rows)                                                       420     2071
table fetch by rowid                                             862     1858
execute count                                                       299     1116So, is it saying that it's revisiting all blocks again but not showing in autotrace.

Answer 1

HI,
The button is in a diff. class, so i just can't close the connection straight away.
I tried it even using a flag, even then it's not closed.
void cmdCanel_actionPerformed(ActionEvent e)
isStop = true;
DataObj.isStop(isStop);
public boolean isStop(boolean isStop) {
stopCalled = isStop;
return stopCalled;
if(stopCalled) {
rs.close();
Even then the process is not getting stopped.
What could be done to stop that?