share_book
Envoyer cet article par e-mail

Cost-Based Oracle Fundamentals (Expert's Voice in Oracle)

ou partager sur :

share_comment
Partager ce commentaire par e-mail

ou partager sur :

PRÊT A ACHETER?
(vous pouvez toujours annuler plus tard)


J'aime
Cost-Based Oracle Fundamentals (Expert's Voice in Oracle)

Cost-Based Oracle Fundamentals (Expert's Voice in Oracle)

  (Auteur)


Prix : Cet article n'a pas encore de prix  ask_price

Demande de cotation sur ""
Ce titre est nouveau dans notre fonds d'ouvrages et nous ne l'avons encore jamais vendu à ce jour.
Notre engagement: Vous obtenir le meilleur prix
Aussi nombreux que soient les titres que nous référençons, absolument rien n'est automatisé dans la fixation de nos prix; et plutôt que de convertir automatiquement le prix en euros et risquer de répercuter sur vous un prix artificiellement élevé, nous vous faisons un devis rapide après avoir vérifié les prix auprès de nos différents fournisseurs.
Cette étape de demande de cotation est rapide (généralement quelques heures) et vise à vous faire bénéficier en permanence du meilleur prix pour vos achats de livres.


Sur commande

Des articles qui pourraient aussi vous intéresser

    Description de "Cost-Based Oracle Fundamentals (Expert's Voice in Oracle)"

    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 checked for null columnsand the optimizer flatly refuses to use your index unless you hint it. What could possibly be going wrong? If you've suffered the frustration of watching the optimizer do something completely bizarre when the best execution plan is totally obvious, or spent hours or days trying to make the optimizer do what you want it to do, then this is the book you need. You'll come to know how the optimizer thinks, understand why it makes mistakes, and recognize the data patterns that make it go awry. With this information at your fingertips, you will save an enormous amount of time on designing and trouble-shooting your SQL. The cost-based optimizer is simply a piece of code that contains a model of how Oracle databases work. By applying this model to the statistics about your data, the optimizer tries to efficiently convert your query into an executable plan. Unfortunately, the model can't be perfect, your statistics can't be perfect, and the resulting execution plan may be far from perfect. In Cost-Based Oracle Fundamentals, the first book in a series of three,Jonathan Lewisoneof the foremost authorities in this fielddescribes the most commonly used parts of the model, what the optimizer does with your statistics, and why things go wrong. With this information, you'll be in a position to fix entire problem areas, not just single SQL statements, by adjusting the model or creating more truthful statistics.

    Détails sur le produit

    • Reliure : Paperback
    • 536  pages
    • Dimensions :  2.8cmx17.8cmx23.1cm
    • Poids : 816.5g
    • Editeur :   Apress Paru le
    • ISBN :  1590596366
    • EAN13 :  9781590596364
    • Langue : Anglais

    D'autres livres de Jonathan Lewis

    Practical Oracle8i™: Building Efficient Databases

    In this book, one of the world's leading Oracle database consultants covers the real-world design and development issues most Oracle books ignore! Jonathan Lewis presents powerful techniques -- and errors to avoid -- if you want to build databases that meet their objectives, stay on budget, scale to...

    Voir tous les livres de Jonathan Lewis

    Commentaires sur cet article

    Personne n'a encore laissé de commentaire. Soyez le premier!

    Laisser un commentaire

    Rechercher des articles similaires par rayon

    Rechercher par thèmes associés

    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 checked for null columnsand the optimizer flatly refuses to use your index unless you hint it. What could possibly be going wrong? If you've suffered the frustration of watching the optimizer do something completely bizarre when the best execution plan is totally obvious, or spent hours or days trying to make the optimizer do what you want it to do, then this is the book you need. You'll come to know how the optimizer thinks, understand why it makes mistakes, and recognize the data patterns that make it go awry. With this information at your fingertips, you will save an enormous amount of time on designing and trouble-shooting your SQL. The cost-based optimizer is simply a piece of code that contains a model of how Oracle databases work. By applying this model to the statistics about your data, the optimizer tries to efficiently convert your query into an executable plan. Unfortunately, the model can't be perfect, your statistics can't be perfect, and the resulting execution plan may be far from perfect. In Cost-Based Oracle Fundamentals, the first book in a series of three,Jonathan Lewisoneof the foremost authorities in this fielddescribes the most commonly used parts of the model, what the optimizer does with your statistics, and why things go wrong. With this information, you'll be in a position to fix entire problem areas, not just single SQL statements, by adjusting the model or creating more truthful statistics.