Updating metadata in OWB after modifying tables in the database

Question

Hi All,
In our data warehouse, one key field will suffer a change in data precision, from number(4) to number(5). This field exists in several tables across the database and I have created a procedure to alter all related tables in Oracle (10g). Is there a way to create a similar procedure or script to modify the metadata in OWB in order to reflect the changes in the altered tables from the database? I think the script should refresh the tables in the metadata but I'm not sure if it would be necessary to sincronize or validate the related mappings.
I'm newbie in OWB so I'm not sure whether this is achievable or not.
Thanks in advance for your guidance.
Regards,
Mauricio
Edited by: mcruz on 21/03/2010 17:07

Answer 1

Below is a OMBPlus tcl script to set the precision and scale of a specific column name in all tables of the current oracle module
Prerequisite is that you have made the connection to the OWB repository in OMBPlus (OMBCONNECT) and have set the context to the right oracle module (OMBCC and set OMBPROMPT ON, the latter to display your current context in the prompt)
Happy scripting.
proc set_nbr_len {p_objtyp p_col_name p_scale p_precision} {
   set tbls [OMBLIST ${p_objtyp}S]
   foreach tbl $tbls {
      set cols [OMBRETRIEVE $p_objtyp '$tbl' GET COLUMNS '$p_col_name']
      foreach col $cols {
       set dattyp [OMBRETRIEVE $p_objtyp '$tbl' COLUMN '$col' \
                     GET PROPERTIES (DATATYPE)]
       if { [string first "NUMBER" $dattyp] != -1 } {
            puts "Column $col scale & precision reset in $p_objtyp $tbl"
                OMBALTER $p_objtyp '$tbl' MODIFY COLUMN '$col' SET PROPERTIES \
                     (SCALE, PRECISION) VALUES \
               ('$p_scale', '$p_precision')
   OMBCOMMIT
set_nbr_len TABLE <your column name> <your precision> <your scale>