Su tabelle partizionate di grandi dimensioni, per esempio per anno, può essere utile la raccolta di statistiche solo sulla partizione movimentata:
-- statistica su partizione al 5%
SQL> exec dbms_stats.gather_table_stats('CRM','CUSTOMER_HISTORY' ,partname=>'PART_2013', estimate_percent=>5);
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A good scientist is a person with original ideas.
A good engineer is a person who makes a design that works with as few original ideas as possible. There are no prima donnas in engineering. Freeman Dyson
A good scientist is a person with original ideas.
A good engineer is a person who makes a design that works with as few original ideas as possible. There are no prima donnas in engineering. Freeman Dyson
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Nicoleta e Marco Magnani tutorial, examples, courses, esempi, corsi, esercizi, appunti vari Dottoressa Nicoleta Dragu Formatrice Docente Insegnante Mediatrice Culturale
Dott. Marco Magnani Universita La Sapienza Roma Master Computer Science Hunter College New York , Data Base Administrator DBA oracle System architect