Oracle-L: LMT bitmap question

From: Sinardy Xing <SinardyXing_at_bcs-ach.com.sg>
Date: Fri, 19 Apr 2002 20:53:19 -0800
Message-ID: <F001.0044A215.20020419205319@fatcity.com>

Hi all,

I'm confuse with Segment Header and Data file header.

some said LMT keep the free block information (bitmap) in Segment header and some said Data file header.

I have 3 questions

where oracle keep LMT bitmap each data file header or each segment header ?

2a. if it is store in data file header can one tell whether is LMT or DMT by view (first line) of the physical file ? 2b. if it is stored in segment header which view of base tables store these information.

3. What is ST enqueue ?

Thanks

Sinardy
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Author: Sinardy Xing
INET: SinardyXing_at_bcs-ach.com.sg

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