Blocks??
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Thread: Blocks??

  1. #1
    Join Date
    Jan 2001
    Posts
    50

    Blocks??

    hi
    Can anyone tell me in the view dba_free_space what does the column BLOCK is for ...consider the following query below...
    SELECT BLOCK_ID, BYTES, BLOCKS
    FROM DBA_FREE_SPACE
    WHERE TABLESPACE_NAME = 'TABSP_4'
    ORDER BY BLOCK_ID;

    BLOCK_ID BYTES BLOCKS
    ---------- ---------- ----------
    2 16384 2
    4 16384 2
    6 81920 10
    16 16384 2
    27 16384 2
    29 16384 2
    31 16384 2
    33 16384 2
    35 16384 2
    37 16384 2
    39 8192 1
    40 8192 1
    41 196608 24
    13 rows selected.
    Now what i wanna know if the BLOCKS columns shows no of blocks then shoudn't each block shd have seperate block_id .......
    Aniruddha Gupta

  2. #2
    Join Date
    Feb 2000
    Location
    Singapore
    Posts
    1,758
    BLOCKS is the size of free extent in oracle blocks and BLOCK_ID is the starting block id of that extent.

    Sanjay

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