Cost-based oracle fundamentals
The question, "Why isn't Oracle using my index?" must be one of the most popular (or perhaps unpopular) questions ever asked on the Oracle help forums. You've picked exactly the right columns, you've got them in the ideal order, you've computed statistics, you've c...
| Autor principal: | |
|---|---|
| Formato: | Libro electrónico |
| Idioma: | Inglés |
| Publicado: |
Berkeley, CA :
Apress
c2006.
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| Edición: | 1st ed. 2006. |
| Colección: | Expert's voice in Oracle.
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| Materias: | |
| Ver en Biblioteca Universitat Ramon Llull: | https://discovery.url.edu/permalink/34CSUC_URL/1im36ta/alma991009627286206719 |
Tabla de Contenidos:
- What Do You Mean by Cost?
- Tablescans
- Single Table Selectivity
- Simple B-tree Access
- The Clustering Factor
- Selectivity Issues
- Histograms
- Bitmap Indexes
- Query Transformation
- Join Cardinality
- Nested Loops
- Hash Joins
- Sorting and Merge Joins
- The 10053 Trace File.
