Problem using ora_hash in a mapping in OWB

Question

Hi,
I wanted to use the function ora_hash in order to implement history preserving on a dimension table.
If I use the ora_hash in a expression in a mapping "ORA_HASH( INGRP1.NAAM || INGRP1.PRODUCT || INGRP1.SECTION )" and I deploy this maping then I get the warning "PLS-00201: identifier 'ORA_HASH' must be declared".
If I execute this function in SQLDeveloper or Toad it works fine and returns me a number.
I have granted execute priviledges from within the sys schema to the user I deploy the mapping to.
I have this problem at a customer's site on an oracle 10.2 database but I have it on my own laptop, Oracle 11G, as well.
I don't see what I'm doing wrong but I'm overlooking something I guess.
Thanks for you advice!

Answer 1

Hi
Configure the mapping to be Set Based only. It sounds like the row based code is executing the SQL-only function ORA_HASH in PLSQL, so you get the error.
Set Based;
To illustrate, the Set Based SQL will have the ORA_HASH call within the SQL statement.....
SQL> select ora_hash('hello world') from dual;
ORA_HASH('HELLOWORLD')
1896528268
Row Based;
The row based code will make a call something like this (just to illustrate SQL vs PLSQL);
SQL> declare v varchar2(20); begin v := ora_hash('hello world'); end;
2 /
declare v varchar2(20); begin v := ora_hash('hello world'); end;
ERROR at line 1:
ORA-06550: line 1, column 36:
PLS-00201: identifier 'ORA_HASH' must be declared
ORA-06550: line 1, column 31:
PL/SQL: Statement ignored
So configure the mapping to ONLY use Set Based on the code generation and default operating mode and you should be in business.
Cheers
David