Re: Index - Blevel

  • From: "David Fitzjarrell" <dmarc-noreply@xxxxxxxxxxxxx> (Redacted sender "oratune@xxxxxxxxx" for DMARC)
  • To: "cure@xxxxxxxxxxxxx" <cure@xxxxxxxxxxxxx>, "oracle-l@xxxxxxxxxxxxx" <oracle-l@xxxxxxxxxxxxx>
  • Date: Tue, 24 Feb 2015 16:55:13 +0000 (UTC)

BLEVEL 0 is the root level, so there is the root block and one leaf block.
 David Fitzjarrell

Principal author, "Oracle Exadata Survival Guide"
 

     On Tuesday, February 24, 2015 9:04 AM, Paul Harrison <cure@xxxxxxxxxxxxx> 
wrote:
   

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{}-->Hi ALL,  BLEVEL has a value of 0 and LEAF_BLOCKS has a value of 1.  Does 
this mean the index consists of the root block and 1 leaf block?    The blevel 
doesn’t include the root block in its value?    SQL> select 
index_name,blevel,leaf_blocks  2  from dba_indexes  3  where owner=user  4  and 
index_name like '%TEST5_LAST_NAME_IDX%'  5  /    INDEX_NAME                     
    BLEVEL LEAF_BLOCKS------------------------------ ---------- 
-----------TEST5_LAST_NAME_IDX                     0           1      
Thanks,Paul

   

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