Insertion of user name failing in 10g--very very urgent

Question

Hi
I have this insert statement:
INSERT INTO tHistory(Client_ID,Table_Ref,Table_ID,Entry_Type,Subject,User_Name
,Parent_ID,content)
VALUES( 'D5555555','tClient','D555555','edit','Edit By '||user,user,0,'test');
all fields are non nullable.
However when I run it it does accept the user for user name column and throws an error saying user cant b blank.
This same stmnt works fine in 9i but fails in 10g.
Could anyone please help.
Thanks in Advance

Answer 1

are you running this from some other environment or as string from some program.
here is the test case.
Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Production
With the Partitioning, OLAP and Data Mining options
SQL> create table test_table(n varchar2(200))
  2  /
Table created.
SQL> insert into test_table values('Hello '||user)
  2  /
1 row created.
SQL>
SQL> select * from test_table
  2  /
N
Hello SCOTT
SQL>
SQL> show user
USER is "SCOTT"