Go into the physical model, and check out the primary key properties, and the Using Index page.
When modeling a table with 3 columns as PK, engineering from Logical Model to Oracle 10g Relational Model, then visualizing the DDL script there is a CREATE UNIQUE INDEX section being created automatically. I could not find anywhere to replace the Unique Index name, since I get the following ERROR message:
-- ERROR: Index name length exceeds maximum allowed length(30)
Object names can not be longer than 30 characters.
CREATE UNIQUE INDEX L011GPLA_CODGPR_CODANR_CODPAN_IDX ON L011GPLA
Are you saying that Data Modeler created that 33 character index name?
Or are YOU trying to create it?