January 2012
Intermediate to advanced
542 pages
11h 28m
English
Content preview from Oracle Database 11gR2 Performance Tuning CookbookBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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INDEX_STATS
This view collects information from index statistics (after an ANALYZE INDEX).
Fields
The most relevant view fields are as follows:
NAME: The name of the indexHEIGHT: The height of the B-tree indexBLOCKS: The number of allocated database blocksBTREE_SPACE: The total space allocatedUSED_SPACE: The total space usedDISTINCT_KEYS: The number of distinct keys in the indexOPT_CMPR_COUNT: The optimal key compression lengthOPT_CMPR_PCTSAVE: Space saving corresponding to the adoption of the optimal key compression length
See also
- The
DBA_INDEXESsection in this appendix
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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