Oracle FAQ | Your Portal to the Oracle Knowledge Grid |
![]() |
![]() |
Home -> Community -> Usenet -> c.d.o.server -> Re: Large Index organized tables: just a marketing feature ?! (for experts)
At present I am testing import and "insert into select from".
I am getting closer to have a good load time .
I have figured out that the order of the data in the source (table or file) has an important effect on the load performance of the IOT table. I have an index splitting problem with IOT. On the B-tree index there is no index splitting. I don't know if it is a bug or a feature.
After three hard weeks of work finally I am getting a solution:
(46 000 000 row sample)
1. I load the data into a regular partitionned heap table.
2. I create a b-tree index on the table. I am using the same keys as
the primary key: product_id, timestamp, ....
3. I load the data using "insert into select from".
Everything is done within an hour (instead of 9 hours). Maybe this information can help somebody later .... Received on Thu Jul 31 2003 - 06:18:27 CDT
![]() |
![]() |