The alter table exchange partition lets you transfer
data from the partition of a partitioned table to a
non partitioned table. It changes the adress in the
data dictionnary, no data is moved, that's why it is
fast.

For example, I'm using it in a system to exchange old
data with new data. The new data is loaded in staging
tables (non-partitioned). When the data is cleansed
and validated, the staging tables are exchanged with
the target tables (partitionned).
The target tables are partitioned with only one
partition to be able to used the alter table exchange
partition statement.

More in the docs...

 --- [EMAIL PROTECTED] a écrit : > Dear all,
> What's the meaning of "Partition Exchange"?
> 
> tia,
> 
> Holly
> 
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=====
Stéphane Paquette
DBA Oracle, consultant entrepôt de données
Oracle DBA, datawarehouse consultant
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