that bitmap to resemble LMT header?

Hi guys,.

I tried Googling autour but have not found the answer, so if someone could kindly explain or if they know of a good article, they can tell me, I would appreciate it

Basically, I'm trying to think of what looks like the bitmap header of a file of data belonging to a LMT to?

one) is that it will appear in the header of a data file?
(b) initially if we have not extended, it will be empty. Now we add a span of say 128KB. I see two pieces of information that must be stored. ((1) (in this case 128) size 2) the address of the first block but how can he be represented by a bit? That's what confuses me?

Thank you guys

OracleGuy777 wrote:
Thank you.

just to confirm, the header of an area does not contain any information about which segment it's part, Yes?

Thank you

No, OracleGuy

There is no header extensions, the measure is a logical unit of storage of database space allocation composed of several contiguous data blocks.
As you can see, not as block and file data, to what extent is only the logical unit. Measure information is stored in the data dictionary, you can identify a certain extent by the datafile are on and start and end of block number.

You can see this part of the concept of Oracle for more information
http://download.Oracle.com/docs/CD/B28359_01/server.111/b28318/logical.htm#CNCPT301

check this picture for relationship between extent/segment/block
Image:! http://download.Oracle.com/docs/CD/B28359_01/server.111/b28318/IMG/cncpt027.gif!

Tags: Database

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     KTFBUESEGBNO                                       NUMBER
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