Video: Qhov system tablespace yog dab tsi?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
System tablespace yog a rooj uas khaws tag nrho cov ntaub ntawv phau ntawv txhais lus nyob rau hauv database thiab nws yog tsim thaum lub sij hawm tsim database. Qhov no rooj yog ib txwm thiab yuav tsum nyob online rau database qhib.
Khaws qhov no rau hauv kev xav, dab tsi yog txhais los ntawm tablespace?
A rooj yog qhov chaw khaws cia uas cov ntaub ntawv tiag tiag hauv qab cov khoom siv database 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 sab saum toj no, System thiab Sysaux tablespace hauv Oracle yog dab tsi? SYSTEM thiab SYSAUX Tablespaces . Cov SYSTEM tablespace yog siv rau kev ua haujlwm tseem ceeb (piv txwv li, cov ntaub ntawv phau ntawv txhais lus). Tus pab SYSAUX tablespace yog siv rau cov khoom siv database ntxiv (xws li Enterprise Manager Repository). Txhua Oracle database muaj a SYSTEM tablespace thiab a SYSAUX tablespace.
Hauv qhov no, qhov system tablespace hauv MySQL yog dab tsi?
Cov qhov system tablespace yog qhov chaw khaws cia rau InnoDB cov ntaub ntawv phau ntawv txhais lus, cov ntawv sau ob npaug, tsis hloov pauv, thiab tshem tawm cov ntawv sau tseg. Nws kuj tseem yuav muaj cov lus thiab cov ntaub ntawv ntsuas yog tias cov ntxhuav raug tsim hauv qhov system tablespace es tsis yog file-per-table cov rooj zaum . Cov qhov system tablespace tuaj yeem muaj ib lossis ntau cov ntaub ntawv.
Tablespace SAP yog dab tsi?
A rooj muaj ib lossis ntau lub cev cov ntaub ntawv. Database objects muab rau a rooj tau khaws cia rau hauv cov ntaub ntawv lub cev ntawm qhov ntawd rooj . Thaum koj tsim Oracle database, qee qhov cov rooj zaum twb muaj lawm, xws li SYSTEM thiab USERS. Tablespaces muab ib txoj hauv kev los nrhiav cov ntaub ntawv ntawm kev khaws cia.
Pom zoo:
Dab tsi yog qhov dav thawj qhov kev tshawb nrhiav thiab qhov tob thawj qhov kev tshawb fawb?
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