Reload the tables.

We need to truncate and load several large tables (about 60 GB each) with DEC or insert / * + append * /. Are not partitioned. Tables have indexes. There are two options:

1. load the tables and reconstruction/re-create the index.

2. let the index in usable state by loading data.

How more fast will be the first option? The second option would require less resources (e.g., temp for index creation)? How compact will be the index in the second option?

Thank you.

> 1. Load tables and reconstruction/re-create the index.

Why rebuild/recreate the index again after they have been updated with a path Insert (APPEND Hint) live?  The indexes are empty (because of her TRUNCATE) and can be USED before the insert and a Direct path Insert actually creates a temporary segment for the new entries index and it merges with the void index.  You don't need to rebuild/recreate the index.

> 2. Leave the indexes in a usable state by loading data.

Which is the same as 1.

Hemant K Collette

Tags: Database

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