RE: PctUsed and PctFree when using LMT and 9.2.0.4 on Aix
- From: "Mercadante, Thomas F" <thomas.mercadante@xxxxxxxxxxxxxxxxx>
- To: "'oracle-l@xxxxxxxxxxxxx'" <oracle-l@xxxxxxxxxxxxx>
- Date: Thu, 5 Feb 2004 13:55:19 -0500
thanks Tanel!
Tom Mercadante
Oracle Certified Professional
-----Original Message-----
From: Tanel Poder [mailto:tanel.poder.003@xxxxxxx]
Sent: Thursday, February 05, 2004 1:50 PM
To: oracle-l@xxxxxxxxxxxxx
Subject: Re: PctUsed and PctFree when using LMT and 9.2.0.4 on Aix
Hi!
> I just noticed something that I think is strange. I am creating a new
Curam
> database in a 9.2.0.4 AIX 5.2 machine. I am using all Locally Managed
> Tablespaces. The Create Table scripts all have a pctfree and pctused
entry.
>
> When I look at user_tables, the pctfree entry is noted, but pctused is
null.
> Does this sound strange to anyone else?
Your tablespace is in automatic segment space management (ASSM) mode.
In that case you can't explicitly set PCTUSED, instead Oracle will use 4
freeness levels for table blocks internally (in addition to 2 special
statuses), putting block back to "free" status when block usage drops at
least one level below PCTFREE.
Tanel.
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