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How to estimate uncompress row count or percentage of these table ?

thrupassMay 2 2016 — edited May 5 2016

env

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Oracle 12.1.0.2

Exadata

tab_basic : row store compress basic

tab_qh : compress for query high

* Data loaded by direct-path INSERT operations

There are two compressed tables.

Several DML happened to these tables....

How to estimate uncompress row count or percentage of these table ?

Thanks in advance

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