Lub tablespace Oracle yog dab tsi?
Lub tablespace Oracle yog dab tsi?

Video: Lub tablespace Oracle yog dab tsi?

Video: Lub tablespace Oracle yog dab tsi?
Video: Query to find Tablespaces and Data files in Oracle 11g 2024, Kaum ib hlis
Anonim

Ib Oracle database muaj ib lossis ntau qhov chaw cia khoom hu ua tej rooj , uas ua ke khaws tag nrho cov ntaub ntawv database. Txhua rooj hauv ib Oracle database muaj ib lossis ntau cov ntaub ntawv hu ua datafiles, uas yog lub cev cov qauv uas ua raws li kev khiav hauj lwm qhov system uas Oracle yog khiav.

Dhau li ntawd, tablespace yog dab tsi hauv Oracle nrog piv txwv?

Ib Oracle database yog suav nrog ib lossis ntau qhov chaw cia khoom hu ua cov rooj zaum . Cov ntaub ntawv database yog khaws cia rau hauv cov ntaub ntawv cov ntaub ntawv uas ua rau txhua tus rooj ntawm lub database. Rau piv txwv , qhov yooj yim tshaj plaws Oracle database yuav muaj ib tug rooj thiab ib tug datafile.

Dab tsi yog lub rooj zaum hauv Oracle 11g? Tablespace : Tablespace yog logical cia chav nyob hauv oracle database uas muaj ib lossis ntau cov ntaub ntawv nws tsis tuaj yeem pom hauv cov ntaub ntawv kaw lus.

Tsis tas li ntawd, dab tsi yog tablespace hauv database?

A rooj yog qhov chaw khaws cia uas cov ntaub ntawv tiag tiag hauv qab database Cov khoom tuaj yeem khaws cia. Nws muab ib txheej ntawm abstraction ntawm lub cev thiab cov ntaub ntawv pov thawj, thiab ua haujlwm los faib cov chaw cia rau txhua ntu DBMS. Ib zaug tsim, a rooj tuaj yeem raug xa mus los ntawm lub npe thaum tsim database ntu.

Dab tsi yog qhov chaw seem hauv Oracle?

Oracle los nrog cov hauv qab no default tablespaces : SYSTEM, SYSAUX, USERS, UNDOTBS1, thiab TEMP. SYSTEM thiab SYSAUX cov rooj zaum khaws cov khoom tsim tawm xws li cov ntaub ntawv phau ntawv txhais lus. Thiab koj yuav tsum tsis txhob khaws tej yam khoom hauv cov no cov rooj zaum . Cov neeg siv rooj yog pab tau rau cov neeg siv ad-hoc.

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