TRUNC() giving wrong data in different versions of Oracle DB

Question

Hi All,
       I have two oracle data base versions. I need to insert into one temp table with select statement. When i use the same query in both environment am getting different results. Can you please help me on that.
Version:1
Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - Prod
PL/SQL Release 10.2.0.4.0 - Production
CORE 10.2.0.4.0 Production
TNS for 32-bit Windows: Version 10.2.0.4.0 - Production
NLSRTL Version 10.2.0.4.0 - Production
Version: 2
Oracle Database 10g Enterprise Edition Release 10.2.0.5.0 - 64bi
PL/SQL Release 10.2.0.5.0 - Production
CORE 10.2.0.5.0 Production
TNS for IBM/AIX RISC System/6000: Version 10.2.0.5.0 - Productio
NLSRTL Version 10.2.0.5.0 - Production
Query we used:
insert into my_temp_table
select v_name,trunc(d_charge_date)
from table1;
my_temp_table structure:
v_name               varchar2(30),   
d_charge_date     date;
Note: Date columns represented with mm/dd/yyyy format....
in table1 i have data like this....
v_name
d_charge_date
xxx
12/2/2012
yyy
10/23/2010
abc
9/29/2013
after the insertion into temp table am getting the result like below...
select * from my_temp_table;
If i run this query in version 1 am getting the correct data..
v_name
d_charge_date
xxx
12/2/2012
yyy
10/23/2010
abc
9/29/2013
but if i run the same insert query in version 2 getting the wrong data
v_name
d_charge_date
xxx
12/2/2011
yyy
12/2/2011
abc
12/2/2011
If i remove the trunc from the insertion statement i didn't get the wrong data like above...
  I don't know the exactly reason. So can you please help me to identify this cause...

Answer 1

Hi i think the global temporary table having this issue in version b what i have mentioned above.
insert into /*+append*/global_temporary_temp
(v_policy_no,n_seq_no,d_next_chgdue_date,v_charge_freq,v_cntr_stat_code,v_iu_au_base,d_cntr_start_date)
select distinct a.v_policy_no,a.n_seq_no,trunc(a.d_next_chgdue_date),a.v_charge_freq,b.v_cntr_stat_code,c.v_iu_au_base,b.d_cntr_start_date
from table_a a,table_2 b,table_3 c
where a.v_status = 'A'
and a.v_charge_freq is not null
and trunc(a.d_next_chgdue_date) <= trunc(sysdate)
and b.v_cntr_stat_code in ('NB010')
and a.v_policy_no = b.v_policy_no
and a.n_seq_no = b.n_seq_no
and a.v_plri_code = c.v_plan_code
and a.v_parent_event_code = c.v_parent_event_code
and a.v_charge_pcode = c.v_charge_pcode
and a.v_charge_code = c.v_charge_code