RE: PCTFREE and ITL space on high insert table

Stefan,

But now he knows that "alter table move" allocates 3 ITLs and "create empty / insert " allocates 2 ITLs he may choose to save 24 bytes per block ;)

Realistically, he may also think about using dbms_redefinition to do an online move - though there are licencing considerations to worry about when combining compression and online moves.


Regards
Jonathan Lewis
http://jonathanlewis.wordpress.com
_at_jloracle

________________________________________
From: Stefan Koehler [contact_at_soocs.de]
Sent: 04 May 2016 11:43
To: Jonathan Lewis; oracle-l_at_freelists org
Subject: RE: PCTFREE and ITL space on high insert table

Hi Jonathan,
thanks for verifying the version.

> The three ITL slots appears for "create table as select", and "alter table move".

I may misunderstood Michael, but doesn't he want to move his partitions? Quote: "I am moving the table partitions to another tablespace and am
wondering if I can change to PCTFREE 0". So finally he will end up with at least 3 ITL slots.

Best Regards
Stefan Koehler

Freelance Oracle performance consultant and researcher
Homepage: http://www.soocs.de
Twitter: _at_OracleSK

> Jonathan Lewis <jonathan_at_jlcomp.demon.co.uk> hat am 4. Mai 2016 um 11:35 geschrieben:
>
>
> Stefan,
>
> The three ITL slots appears for "create table as select", and "alter table move".
> If you create an empty table and insert into it you get 2 ITL slots per block. I think this appeared in 10g at the same time that MAXTRANs ceased to
> have any effect.
>
>
> Regards
> Jonathan Lewis
> http://jonathanlewis.wordpress.com
> _at_jloracle
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