Oracle Database - Leaf (block|Node) of a Btree index

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The lowest level blocks in the tree of a Btree index, called leaf nodes or leaf blocks, contain every indexed key and a rowid that points to the row it is indexing.





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Oracle Database - (Level|Height) Index statistics

The level is also known as theHeight of a B Tree|index or the number of blocks required to go from the root block to the leaf block. Blevel is the number of branch levels and differs from HEIGHT by one...
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Oracle Database - Blevel Index Statistics

Blevel is the number of branch levels in a Btree index and differs from HEIGHT by one. It does not count the leaf block. The value of BLEVEL is found in the normal dictionary tables such as...
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Oracle Database - Index Statistics

Statistics on Index stored in the data dictionary : DBA_INDEXES DBA_IND_STATISTICS Default Index Values When Statistics Are Missing Index Statistic Default Value Used by Optimizer Levels ...



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