Sequence generated function

Question

Hi Folks
can any one help me in finding a solution for restricting a function used by other procedures ..
in my case i have function which is sequence number generator as it is used by other procedures its sequence is disturbed .
solution is highly appriciated.

Answer 1

it's failing what could be the root cause of this failure to insertPerhaps this:
Session 1:
SQL> create table testtable (id number primary key, col2 number)
Table created.
SQL> create function get_seq_num return integer
  2  is
  3  v_seqnum integer;
  4  begin
  5  select max(id)+1
  6  into v_seqnum
  7  from testtable
  8  ;
  9  return v_seqnum;
10  end get_seq_num;
11  /
Function created.
SQL> insert into testtable values(1,1);
1 row created.
SQL> commit;
Commit complete.
SQL> insert into testtable values(get_seq_num, 2);
1 row created.
Session 2:
SQL> insert into testtable values(get_seq_num, 3);
Session 1:
SQL> commit;
Commit complete.
Session 2:
insert into testtable values(get_seq_num, 3)
ERROR at line 1:
ORA-00001: unique constraint (XXXX.SYS_C00162488) violatedTerrible idea to use a function while there are sequences for this purpose.
Regards,
Gerd
Message was edited by:
gerd_99
Sorry, forgot to paiste the function code.