Hi all: I have noticed that something that I was able to do in oracle9 can't be done in oracle10. This is very annoying and I would appreciate any thoughts on this: Oracle 9: SQL> select * from v$version; Oracle9i Enterprise Edition Release 9.2.0.4.0 - 64bit Production PL/SQL Release 9.2.0.4.0 - Production CORE 9.2.0.3.0 Production TNS for IBM/AIX RISC System/6000: Version 9.2.0.4.0 - Production NLSRTL Version 9.2.0.4.0 - Production SQL> drop table test1; Table dropped. SQL> create table test1 (f1 number); Table created. SQL> create unique index test1_pk on test1 (f1); Index created. SQL> alter table test1 add constraint test1_pk primary key (f1) using index; Table altered. SQL> select index_name from dba_indexes where table_name = 'TEST1'; TEST1_PK SQL> alter table test1 disable primary key; Table altered. SQL> select index_name from dba_indexes where table_name = 'TEST1'; no rows selected As you see when I disable the primary key, my index goes away as well. When I do the same in oracle 10G however things are different: Oracle Database 10g Enterprise Edition Release 10.2.0.2.0 - 64bi PL/SQL Release 10.2.0.2.0 - Production CORE 10.2.0.2.0 Production TNS for IBM/AIX RISC System/6000: Version 10.2.0.2.0 - Productio NLSRTL Version 10.2.0.2.0 - Production 5 rows selected. SQL> drop table test1; drop table test1 * ERROR at line 1: ORA-00942: table or view does not exist SQL> create table test1 (f1 number); Table created. SQL> create unique index test1_pk on test1 (f1); Index created. SQL> alter table test1 add constraint test1_pk primary key (f1) using index; Table altered. SQL> select index_name from dba_indexes where table_name = 'TEST1'; TEST1_PK SQL> alter table test1 disable primary key; Table altered. SQL> select index_name from dba_indexes where table_name = 'TEST1'; TEST1_PK Here the index stays after the PK is disabled. This is a big difference IMO and I wonder whether this is a new feature in oracle10 or whether this is something I am not doing correctly. If anyone has any insight on that please let me know thank you Gene Gurevich Oracle Engineering 224-405-4079 -- //www.freelists.org/webpage/oracle-l