If you wish to disable DDL replication in goldengate, then you need to run few scripts from GG_HOME.
SQL> @ddl_remove.sql DDL replication removal script. WARNING: this script removes all DDL replication objects and data. You will be prompted for the name of a schema for the Oracle GoldenGate database objects. NOTE: The schema must be created prior to running this script. Enter Oracle GoldenGate schema name:ggate Working, please wait ... Spooling to file ddl_remove_spool.txt Script complete.
SQL> @marker_remove.sql Marker removal script. WARNING: this script removes all marker objects and data. You will be prompted for the name of a schema for the Oracle GoldenGate database objects. NOTE: The schema must be created prior to running this script. Enter Oracle GoldenGate schema name:ggate PL/SQL procedure successfully completed. Sequence dropped. Table dropped. Script complete.
@ddl_disable.sql