Error using dbms_redefinition package

Question

Hi,
I am trying to use dbms_redefinition package to add a column to a table using primary key method
SQL> conn / as sysdba
Connected.
SQL> grant execute on sys.dbms_redefinition to hr;
Grant succeeded.
SQL> grant dba to hr;
Grant succeeded.
SQL> conn hr/<password>
Connected.
SQL> create table tab1(roll_no number constraint roll_pk primary key,last_name varchar2(30));
Table created.
SQL> insert into tab1 values (1,'Hall');
1 row created.
SQL> commit;
Commit complete.
SQL> insert into tab1 values (2,'Mall');
1 row created.
SQL> commit;
Commit complete.
SQL> insert into tab1 values (3,'Roll');
1 row created.
SQL> commit;
Commit complete.
Adding required column
SQL>
SQL> alter table tab1 add(first_name varchar2(30));
Table altered.
Checking if table can be redefined
SQL> exec dbms_redefinition.can_redef_table('HR','TAB1',DBMS_REDEFINITION.CONS_USE_PK);
PL/SQL procedure successfully completed.
Creating interim table
SQL> create table tab2 as select roll_no,first_name,last_name from tab1 where 1=2;
Table created.
Adding primary key to interim table
SQL> alter table tab2 add constraint roll_pk_1 primary key (roll_no);
Table altered.
Starting redefinition :
SQL> exec dbms_redefinition.start_redef_table('HR','TAB1','TAB2','ROLL_NO,FIRST_NAME,LAST_NAME');
BEGIN dbms_redefinition.start_redef_table('HR','TAB1','TAB2','ROLL_NO,FIRST_NAME,LAST_NAME'); END;
ERROR at line 1:
ORA-00439: feature not enabled: Advanced replication
ORA-06512: at "SYS.DBMS_REDEFINITION", line 52
ORA-06512: at "SYS.DBMS_REDEFINITION", line 1646
ORA-06512: at line 1
SQL>
Could you please help.
Thanks,
Haider

Answer 1

You can, yes. That's why CAN_REDEF_TABLE and START_REDEF_TABLE both have an OPTIONS_FLAG argument that lets you specify whether you want to use the primary key or the ROWID to redefine the table.
SQL> drop table foo;
Table dropped.
SQL> create table foo( col1 number, col2 number );
Table created.I can't redefine the table using the primary key since there is no primary key
SQL> ed
Wrote file afiedt.buf
  1  begin
  2    sys.DBMS_REDEFINITION.CAN_REDEF_TABLE ( 'SCOTT', 'FOO' );
  3* end;
SQL> /
begin
ERROR at line 1:
ORA-12089: cannot online redefine table "SCOTT"."FOO" with no primary key
ORA-06512: at "SYS.DBMS_REDEFINITION", line 139
ORA-06512: at "SYS.DBMS_REDEFINITION", line 1782
ORA-06512: at line 2But I can use the ROWID
SQL> ed
Wrote file afiedt.buf
  1  begin
  2    sys.DBMS_REDEFINITION.CAN_REDEF_TABLE ( 'SCOTT', 'FOO', dbms_redefinition.cons_use_rowid );
  3* end;
SQL> /
PL/SQL procedure successfully completed. Justin