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compression

OLTP compression: migrated rows are compressed

In his articles Compression in Oracle – Part 2: Read-Only Data and Compression in Oracle – Part 3: OLTP Compression, Jonathan Lewis has shown that block (re)compression is never attempted on updates – it is attempted only on inserts (and, of course, only if the used space crosses the PCTFREE threshold).
Now, since a row migration could be considered a row re-insertion – does it trigger a compression attempt of the block that the row is migrated into?…

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