Bug on Oracle 11.2.0.1 on Windows x86 32bit

Question

Hello,
I have a very strange behavior on a database Oracle 11.2.0.1 on a Windows x86 32bit machine.
I have 2 simple query on a small table with different condition.
If I run the 2 query separately, they extract 2 data correcty, but if I run a unique query with the 2 previous condition in OR, the result is the same as if I run the query with AND operator.
Here is the example from DOS :
     C:\Users\bianchi>sqlplus zcssysman/****@sm11
     SQL*Plus: Release 11.2.0.1.0 Production on Lun Nov 8 10:58:00 2010
     Copyright (c) 1982, 2010, Oracle. All rights reserved.
     Connesso a:
     Oracle Database 11g Release 11.2.0.1.0 - Production
     SQL> --
     SQL> -- Crea tabella di test
     SQL> --
     SQL> create table SARBI
     2 (
     3 PP CHAR(10),
     4 DFIN DATE
     5 );
     Tabella creata.
     SQL> --
     SQL> -- Aggiunge records
     SQL> --
     SQL> insert into SARBI (PP, DFIN)
     2 values ('0 ', to_date('17-11-2009', 'dd-mm-yyyy'));
     Creata 1 riga.
     SQL> insert into SARBI (PP, DFIN)
     2 values ('1 ', to_date('17-11-2009', 'dd-mm-yyyy'));
     Creata 1 riga.
     SQL> insert into SARBI (PP, DFIN)
     2 values ('2 ', to_date('17-11-2009', 'dd-mm-yyyy'));
     Creata 1 riga.
     SQL> insert into SARBI (PP, DFIN)
     2 values ('3 ', to_date('31-12-2010', 'dd-mm-yyyy'));
     Creata 1 riga.
     SQL> insert into SARBI (PP, DFIN)
     2 values ('4 ', to_date('31-12-2008', 'dd-mm-yyyy'));
     Creata 1 riga.
     SQL> commit;
     Commit completato.
     SQL> --
     SQL> -- Data maggiore/uguale di sysdate
     SQL> --
     SQL> SELECT a.rowid, a.*
     2 FROM SARBI a WHERE
     3 ( DFIN >= SYSDATE );
     ROWID PP DFIN
     AAAlEYAAEAAFlZ7AAD 3 31-DIC-10
     SQL> --
     SQL> -- Data uguale a 17/11/2009
     SQL> --
     SQL> SELECT a.rowid, a.*
     2 FROM SARBI A WHERE
     3 ( DFIN = TO_DATE('20091117','YYYYMMDD'));
     ROWID PP DFIN
     AAAlEYAAEAAFlZ7AAA 0 17-NOV-09
     AAAlEYAAEAAFlZ7AAB 1 17-NOV-09
     AAAlEYAAEAAFlZ7AAC 2 17-NOV-09
     SQL> --
     SQL> -- Entrambe le condizioni in OR
     SQL> --
     SQL> SELECT a.rowid, a.*
     2 FROM SARBI A WHERE
     3 ( DFIN >= SYSDATE OR
     4 DFIN = TO_DATE('20091117','YYYYMMDD'));
     ROWID PP DFIN
     AAAlEYAAEAAFlZ7AAD 3 31-DIC-10
     SQL>
Here is the same query on a DB Oracle 10.2.example from DOS :
     C:\Users\bianchi>sqlplus zcssysman/******@sm10
     SQL*Plus: Release 11.2.0.1.0 Production on Lun Nov 8 11:00:45 2010
     Copyright (c) 1982, 2010, Oracle. All rights reserved.
     Connesso a:
     Oracle Database 10g Release 10.2.0.4.0 - Production
     SQL> --
     SQL> -- Crea tabella di test
     SQL> --
     SQL> create table SARBI
     2 (
     3 PP CHAR(10),
     4 DFIN DATE
     5 );
     Tabella creata.
     SQL> --
     SQL> -- Aggiunge records
     SQL> --
     SQL> insert into SARBI (PP, DFIN)
     2 values ('0 ', to_date('17-11-2009', 'dd-mm-yyyy'));
     Creata 1 riga.
     SQL> insert into SARBI (PP, DFIN)
     2 values ('1 ', to_date('17-11-2009', 'dd-mm-yyyy'));
     Creata 1 riga.
     SQL> insert into SARBI (PP, DFIN)
     2 values ('2 ', to_date('17-11-2009', 'dd-mm-yyyy'));
     Creata 1 riga.
     SQL> insert into SARBI (PP, DFIN)
     2 values ('3 ', to_date('31-12-2010', 'dd-mm-yyyy'));
     Creata 1 riga.
     SQL> insert into SARBI (PP, DFIN)
     2 values ('4 ', to_date('31-12-2008', 'dd-mm-yyyy'));
     Creata 1 riga.
     SQL> commit;
     Commit completato.
     SQL> --
     SQL> -- Data maggiore/uguale di sysdate
     SQL> --
     SQL> SELECT a.rowid, a.*
     2 FROM SARBI a WHERE
     3 ( DFIN >= SYSDATE );
     ROWID PP DFIN
     AAAlC6AAIAACneNAAD 3 31-DIC-10
     SQL> --
     SQL> -- Data uguale a 17/11/2009
     SQL> --
     SQL> SELECT a.rowid, a.*
     2 FROM SARBI A WHERE
     3 ( DFIN = TO_DATE('20091117','YYYYMMDD'));
     ROWID PP DFIN
     AAAlC6AAIAACneNAAA 0 17-NOV-09
     AAAlC6AAIAACneNAAB 1 17-NOV-09
     AAAlC6AAIAACneNAAC 2 17-NOV-09
     SQL> --
     SQL> -- Entrambe le condizioni in OR
     SQL> --
     SQL> SELECT a.rowid, a.*
     2 FROM SARBI A WHERE
     3 ( DFIN >= SYSDATE OR
     4 DFIN = TO_DATE('20091117','YYYYMMDD'));
     ROWID PP DFIN
     AAAlC6AAIAACneNAAA 0 17-NOV-09
     AAAlC6AAIAACneNAAB 1 17-NOV-09
     AAAlC6AAIAACneNAAC 2 17-NOV-09
     AAAlC6AAIAACneNAAD 3 31-DIC-10
     SQL>
Can you help me ? I look for 11.2.0.2 patch set, but it seems that was not yet avaliable ...
Thanks to all

Answer 1

Doesn't happen with VARCHAR column :
SQL> connect hemant
Enter password:
Connected.
SQL> create table X (col_1  number, col_2 varchar2(5));
Table created.
SQL> insert into X values (1,'A');
1 row created.
SQL> insert into X values (2,'J');
1 row created.
SQL> insert into X values (3,'P');
1 row created.
SQL> insert into X values (4,'T');
1 row created.
SQL> insert into X values (5,'Z');
1 row created.
SQL> commit;
Commit complete.
SQL> select col_1, col_2 from X where col_2 > 'Q';
     COL_1 COL_2
         4 T
         5 Z
SQL> select col_1, col_2 from X where col_2 = 'P';
     COL_1 COL_2
         3 P
SQL> select col_1, col_2 from X where
  2  (col_2 > 'Q' OR col_2 = 'P');
     COL_1 COL_2
         3 P
         4 T
         5 Z
SQL> show parameter optimizer_featu
NAME                                 TYPE        VALUE
optimizer_features_enable            string      11.2.0.1
SQL>
SQL> select * from v$version;
BANNER
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production
PL/SQL Release 11.2.0.1.0 - ProductionIs it the SYSDATE ?
SQL> create table y (col_1 number,  col_2 date);
Table created.
SQL> insert into y values (1, to_date('01-JAN-2000','DD-MON-YYYY');
insert into y values (1, to_date('01-JAN-2000','DD-MON-YYYY')
ERROR at line 1:
ORA-00917: missing comma
SQL> insert into y values (1,to_date('01-JAN-2000','DD-MON-YYYY'));
1 row created.
SQL> insert into y values (2,to_date('01-JAN-2001','DD-MON-YYYY'));
1 row created.
SQL> insert into y values (3,to_date('01-JUL-2003','DD-MON-YYYY'));
1 row created.
SQL> insert into y values (4,to_date('15-NOV-2010','DD-MON-YYYY'));
1 row created.
SQL> insert into y values (5,to_date('12-MAR-2015','DD-MON-YYYY'));
1 row created.
SQL> commit;
Commit complete.
SQL> select col_1, col_2 from y where col_2=to_date('15-NOV-2010','DD-MON-YYYY');
     COL_1 COL_2
         4 15-NOV-10
SQL> select col_1, col_2  from y where col_2 > to_date('01-APR-2010','DD-MON-YYYY');
     COL_1 COL_2
         4 15-NOV-10
         5 12-MAR-15
SQL> select  col_1, col_2 from y where col_2=to_date('01-JUL-2003','DD-MON-YYYY');
     COL_1 COL_2
         3 01-JUL-03
SQL> select col_1, col_2 from y where
  2  (col_2 > to_date('01-APR-2010','DD-MON-YYYY') OR col_2 = to_date('01-JUL-2003','DD-MON-YYYY'));
     COL_1 COL_2
         3 01-JUL-03
         4 15-NOV-10
         5 12-MAR-15
SQL> select col_1, col_2 from y where
  2  (col_2 > sysdate OR col_2 = to_date('01-JUL-2003','DD-MON-YYYY'));
     COL_1 COL_2
         4 15-NOV-10
         5 12-MAR-15
SQL>
SQL> select col_1, col_2 from y where
  2  (col_2 > sysdate);
     COL_1 COL_2
         4 15-NOV-10
         5 12-MAR-15
SQL> select col_1, col_2 from y where
  2  col_2 = to_date('01-JUL-2003','DD-MON-YYYY');
     COL_1 COL_2
         3 01-JUL-03
SQL> select col_1, col_2 from y where
  2  (col_2 = to_date('01-JUL-2003','DD-MON-YYYY') OR col_2 > sysdate);
     COL_1 COL_2
         3 01-JUL-03
         4 15-NOV-10
         5 12-MAR-15
SQL>Hemant K Chitale
http://hemantoracledba.blogspot.com
Edited by: Hemant K Chitale on Nov 9, 2010 10:50 PM