CTAS Of A Table Is Bigger Than The Actual Size
Last updated on SEPTEMBER 01, 2017
Applies to:Oracle Database - Enterprise Edition - Version 184.108.40.206 and later
Information in this document applies to any platform.
***Checked for relevance on 01-Sep-2017***
Create Table As Select (CTAS) of a table results in 1.5 times the storage of the actual table.
The following example illustrates the problem:
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