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Which process register the listener services ?
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Check if database is running on Rac or Exclusive via plsql dbms_utility
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How remove a file named -r
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Gestione errori
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TRACE_LEVEL_LISTENER=16
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Rename column
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Script for archiving and compressing folder and file
A User Agent, like a web browser, uses HTTP to request a HTML document
Php Funzione mail()
In programming the danger of exploring the small details of coding is that you get obsessed with every line of code you write, thereby greatly reducing productivity.
In general, is not worth obsessing over code. On the other hand you should code with deliberation and intent. Steven Feurstein Oracle Magazine July /August 2004 A User Agent, like a web browser, uses HTTP to request a HTML document
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Oracle
Home >Oracle > Viste
Una normale vista ha varie funzioni e caratteristiche, tra le più importanti:
Un accenno alle viste materializzate (MATERIALIZED VIEW), oggetti i cui dati sono fisicamente memorizzati nel sistema(pertanto occupano memoria fisica), aggiornabili con criteri definibili, utilizzate solitamente per vantaggi di performance. Tra le tabelle a disposizione del dba per ottenere informazioni su stato e composizione delle viste:
Esempio: data la tabella stipendi:
create table stipendi(nome varchar2(16),cognome varchar2(32), stipendio_mese number(5,2), mese date);
Viene creata la vista stipendi_sum:
create or replace view stipendi_sum(cognome,totale) as select cognome,SUM(stipendio_mese) from stipendi group by cognome,stipendio_mese order by cognome
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EXPLAIN PLAN statement
Anger is creative, depression is useless.
Dyson, Freeman J. Anger is creative, depression is useless.
Dyson, Freeman J.
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Test connessione come sysdba senza password
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Designing an efficient Schema ...
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Scalar Subquery
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Variabile bind
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while do loop
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