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03-ACS-L-A4-S1: Administrarea bazelor de date (2025)

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Crearea unei tabele temporare Oracle cu optiunea on commit preserve rows are ca efect:

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Datele

dintr-o tabela temporara Oracle pot fi accesate printr-o cerere SELECT:

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Crearea unei tabele temporare Oracle cu optiunea on commit delete  rows are ca efect:

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In cazul in care spatiul liber

dintr-un bloc de date Oracle este mai mic decat valoarea  parametrului PCTFREE, in blocul respectiv:

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Operatia

de trunchiere a unei tabele Oracle are ca efect:

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O

lista are contine numele instantei

curente, numele tablespace-ul permanent asignat userului curent, numele

tabelelor create de userul curent si numarul maxim de extensii permise pentru

fiecare tabela Oracle,

se poate obtine din view-urile:

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Daca intr-o tabela Oracle se seteaza  o coloana ca unused, atunci:

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Crearea unui tablespace Oracle de

tip undo se poate face cu comanda:

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Parametrul PCTFREE al

unui bloc de date Oracle reprezinta:

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Pentru a face

o extensie unei tabele Oracle, intr-un fisier nou

creat asignat la baza de date, se pot folosi comenzile

:

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