Re: Does a datafile know *its* blocksize ?

Spendius wrote:
> Hi,
> Is the info regarding the different blocksizes in a DB
> only stored in the dictionary or is this info stored
> somewhere in the datafiles as well ? And does it
> depend on the tablespace and/or segment space
> management (LOCALLY MANAGED/SEGMENT
> SPACE MGT AUTO/MANUAL etc.) ?
>
> Thanks.
> Spendius
>

The tablespace's block size does not have any correlation to its extent allocation algorithm or segment space management.

Each datafile has a *header* which contains a few bits of information. Among those bits are the tablespace name the datafile belongs to as well as the block size for that tablespace.

HTH,
Brian

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Brian Peasland
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