Same rowid but diffrent rows !!!

Question

Hello,
I have seen something unbelievable in oracle today . Two different rows & same rowid !!!!!!
I have fired one select statement on gatepass_body table & retrieved a record with where vrno=782;
select b.rowid,b.* from gatepass_body b
Where b.Vrno ='SF10Y-00782'
here i get the output of row as 'SF10Y-00782', so that's right
then i write for update in front of that query ....
select b.rowid,b.* from gatepass_body b
Where b.Vrno ='SF10Y-00782' for update
now when i execute it , it show me output of row , when vrno='SV10Y-00916';
when i checked the rowid ,they both are same.... i am shocked.
select t.rowid,t.* from gatepass_body t
Where T.Vrno in ('SV10Y-00916')
union
select b.rowid,b.* from gatepass_body b
Where b.Vrno in('SF10Y-00782')
Does it have to do anything with composite primanry key ....
I am also providing the table structure & constraints on it ..... please help me out with this.
-- Create table
create table GATEPASS_BODY
ENTITY_CODE VARCHAR2(2) not null,
TCODE VARCHAR2(1) default 'Q' not null,
VRNO VARCHAR2(11) not null,
SLNO NUMBER(3) not null,
VRDATE DATE default SYSDATE not null,
ITEM_CODE VARCHAR2(9),
TRANUM VARCHAR2(3),
DIV_CODE VARCHAR2(2),
EQPT_CODE VARCHAR2(6),
MAKE_CODE VARCHAR2(4),
REMARK VARCHAR2(240),
QTYISSUED NUMBER(12,3),
QTYEXECUTED NUMBER(12,3),
QTYRECD NUMBER(12,3),
GATEPASS_VRNO VARCHAR2(11),
GATEPASS_SLNO NUMBER(3),
FLAG VARCHAR2(1),
RATE NUMBER(14,2),
PROD_CODE VARCHAR2(4)
tablespace ERP
pctfree 10
initrans 1
maxtrans 255
storage
initial 10M
minextents 1
maxextents unlimited
-- Create/Recreate primary, unique and foreign key constraints
alter table GATEPASS_BODY
add constraint GATEPASS_BODY_PRIMARYKEY primary key (ENTITY_CODE, TCODE, VRNO, SLNO)
using index
tablespace ERP
pctfree 10
initrans 2
maxtrans 255
storage
initial 6M
minextents 1
maxextents unlimited
alter table GATEPASS_BODY
add constraint GATEPASS_BODY_DIV_COD foreign key (DIV_CODE)
references DIV_MAST (DIV_CODE);
alter table GATEPASS_BODY
add constraint GATEPASS_BODY_ENTITY_COD foreign key (ENTITY_CODE)
references ENTITY_MAST (ENTITY_CODE);
alter table GATEPASS_BODY
add constraint GATEPASS_BODY_EQPT_CODE foreign key (EQPT_CODE)
references EQPT_MAST (EQPT_CODE);
alter table GATEPASS_BODY
add constraint GATEPASS_BODY_ITEM_CODE foreign key (ITEM_CODE)
references ITEM_MAST (ITEM_CODE);
alter table GATEPASS_BODY
add constraint GATEPASS_BODY_MAST_CODE foreign key (MAKE_CODE)
references MAKE_MAST (MAKE_CODE);
alter table GATEPASS_BODY
add constraint GATEPASS_BODY_PROD_CODE foreign key (PROD_CODE)
references PROD_MAST (PROD_CODE);
alter table GATEPASS_BODY
add constraint GATEPASS_BODY_TRANUM foreign key (TRANUM)
references UM_MAST (UM_CODE);
please let me know the solution ........it's very important for me ....
Thanks in advance to all....
Edited by: DBA4 on May 20, 2010 1:02 PM

Answer 1

i am firing this query ...
select t.rowid,t.* from gatepass_body t
Where T.Vrno in ('SV10Y-00916')
union
select b.rowid,b.* from gatepass_body b
Where b.Vrno in('SF10Y-00782') result of query ...
1     AAAMpyAAFAAALJtABi     MM     Q     SF10Y-00782     1     5/19/2010 4:05:26 PM     
2     AAAMpyAAFAAALJtABi     MM     Q     SV10Y-00916     1     5/19/2010 4:05:26 PMpreviously when i fired ...
select b.rowid,b.* from gatepass_body b
Where b.Vrno in('SF10Y-00782') output ...
1     AAAMpyAAFAAALJtABi     MM     Q     SF10Y-00782     1     5/19/2010 4:05:26 PM      then i put the for update clause ...
select b.rowid,b.* from gatepass_body b
Where b.Vrno in('SF10Y-00782') for updateoutput of the query ...
1     AAAMpyAAFAAALJtABi     MM     Q     SV10Y-00916     1     5/19/2010 4:05:26 PMyou can compare the rowid & vrno of the output ......
thanks for the replies ....now the major issue is i can't understand how to update the values of 'SF10Y-00782'
let me know the solution...
Edited by: DBA4 on May 20, 2010 1:27 PM