Topic: Performance & Tuning >> Reorganize big tables like... 3G to 7G
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| Title: Reorganize big tables like... 3G to 7G |
| Mohammad |
Posted: Apr 21, 2005 01:43:36 PM |
Total Post: 1
Joined: Apr, 2005
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Hi,
Oracle = 9.2.0.5
Hp 11i
There are many ways to reorganize tables for defregmentation. What is the best way to reorganize big tables like... 3G to 7G
All Tables contain one of these columens:
-- Long, Raw Long, Bfile OR Blob.. --
Is this is the best way:
=======================
What are Advantage and Disadvantage of this method ?
create table FINANCE_New
tablespace FINANCE_tablespace
storage (initial new_initial next new_next
freelists new_freelist_number )
as
select * from FINANCE
order by primary_index_key_values;
===
create table FINANCE_New
tablespace FINANCE_tablespace
nologging
parallel 5
as
select * from FINANCE
order by empno;
Are this method take care of Indexes, triggers, view, procedures, Packages ETC.. ?
Are we need to build and compile..
What happen to
-Indexes
-Privilege
-Role Information
-triggers
-constraints
Thanks
M |
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 Vigyan |
| Posted: Apr 22, 2005 09:24:42 AM |  |
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Total Post: 386
Joined: May, 2001
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Oracle does not allow "CREATE TABLE AS" statement for the tables that have LONG or LONG RAW columns. For other data types you can use online redefinition.
In both the cases (CREATE TABLE AS or REDEFINITION) you will have to create constraints/trigger/indexes etc manually.
For LONG or LONG RAW columns, you can use export/import. It can create all the constraints/trigger/indexes for you.
Hope it helps.
Vigyan
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