Paralell in enable unique constraint

Question

TO use the feature of EXCEPTION into when creating unique index, I run the folllwing command to enable a unique constraints:
alter table TEST_DUP2 enable constraint UNQ_TEST_DUP2     
using index tablespace EDWSALESINDEX nologging
EXCEPTIONS into exceptions
This will create the unique index and when duplicate uniqe key encountered, the command fails and store the rowid of the duplicating row to exceptions table.
Now I want to run this commnad in parallel to enhance performance. I tried
alter table TEST_DUP2 enable constraint UNQ_TEST_DUP2     
using index tablespace EDWSALESINDEX nologging PARALLEL
EXCEPTIONS into exceptions
and I got SQL Error: ORA-00933: SQL command not properly ended.
Can this be done, or are there any worka around ?
I do not want create unique index explicitly as that does not have the EXCEPTION into feature.
Thanks

Answer 1

Here is an example for exceptions,
SQL> create table e( a number);
Table created.
SQL> alter table add constraint a_uk unique(a);
alter table add constraint a_uk unique(a)
ERROR at line 1:
ORA-00903: invalid table name
SQL> alter table e add constraint a_uk unique(a);
Table altered.
SQL> alter table e modify constraint a_uk disable;
Table altered.
SQL> host
Microsoft Windows XP [Version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.
C:\Documents and Settings\Aman>d:
D:\>cd oracle\product\11.1.0\db_1\RDBMS\ADMIN
D:\oracle\product\11.1.0\db_1\RDBMS\ADMIN>exit
SQL> @utlexcpt.sql
SP2-0310: unable to open file "utlexcpt.sql"
SQL> host dir utlex*
Volume in drive C is VAIO
Volume Serial Number is 54A5-8EF0
Directory of C:\Documents and Settings\Aman
File Not Found
SQL> host dir utl*
Volume in drive C is VAIO
Volume Serial Number is 54A5-8EF0
Directory of C:\Documents and Settings\Aman
File Not Found
SQL> hist
SP2-0042: unknown command "hist" - rest of line ignored.
SQL> host
Microsoft Windows XP [Version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.
C:\Documents and Settings\Aman>d:\oracle\product\11.1.0\db_1\RDBMS\ADMIN
'd:\oracle\product\11.1.0\db_1\RDBMS\ADMIN' is not recognized as an internal or extern
operable program or batch file.
C:\Documents and Settings\Aman>cd d:\oracle\product\11.1.0\db_1\RDBMS\ADMIN
C:\Documents and Settings\Aman>sqlplus aman/aman
SQL*Plus: Release 11.1.0.6.0 - Production on Mon Sep 15 22:02:20 2008
Copyright (c) 1982, 2007, Oracle.  All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.1.0.6.0 - Production
With the Partitioning, Oracle Label Security, OLAP, Data Mining,
Oracle Database Vault and Real Application Testing options
SQL>
SQL> d:\oracle\product\11.1.0\db_1\RDBMS\ADMIN
SP2-0734: unknown command beginning "d:\oracle\..." - rest of line ignored.
SQL> @d:\oracle\product\11.1.0\db_1\RDBMS\ADMIN\utlexcpt.sql
Table created.
SQL> insert into e values(1);
1 row created.
SQL> /
1 row created.
SQL> /
1 row created.
SQL> alter table e modify constraint a_uk  enable validate exceptions into exceptions;
alter table e modify constraint a_uk  enable validate exceptions into exceptions
ERROR at line 1:
ORA-02299: cannot validate (AMAN.A_UK) - duplicate keys found
SQL> select * from exceptions;
ROW_ID             OWNER                          TABLE_NAME
CONSTRAINT
AAARXIAAGAAAAAVAAC AMAN                           E
A_UK
AAARXIAAGAAAAAVAAB AMAN                           E
A_UK
AAARXIAAGAAAAAVAAA AMAN                           E
A_UK
SQL> select * from exceptions;Its on 11106.The same must work on pre 11g also.Do this and let me know.
Yup,Parallel is unimplemented surely enough,
SQL> alter table e
  2  enable validate constraint a_uk using index  tablespace nologging parallel;
enable validate constraint a_uk using index  tablespace nologging parallel
ERROR at line 2:
ORA-03001: unimplemented featureAnd here is the reason for it,
http://download.oracle.com/docs/cd/B28359_01/server.111/b28286/statements_3001.htm#i2054940
The clause Parallel is not a right clase for this command.
Hope this helps
Aman....
Edited by: Aman.... on Sep 15, 2008 10:08 PM