Lub tshuab nqus tsev puv ua dab tsi?
Lub tshuab nqus tsev puv ua dab tsi?

Video: Lub tshuab nqus tsev puv ua dab tsi?

Video: Lub tshuab nqus tsev puv ua dab tsi?
Video: Tshuaj theem vim li cas thiaj tau nqi ?/ Siv kho mob dab tsi?/paris polyphylla use for? 2024, Kaum ib hlis
Anonim

VACUUM FULL . VACUUM FULL sau cov tag nrho cov ntsiab lus ntawm lub rooj rau hauv cov ntaub ntawv disk tshiab thiab tso qhov chaw khib nyiab rov qab rau OS. Qhov no ua rau lub rooj-theem xauv ntawm lub rooj thiab qeeb ceev. VACUUM FULL yuav tsum yuav tsum zam ntawm lub siab load system.

Ib yam li ntawd, lub tshuab nqus tsev siv sijhawm ntev npaum li cas?

Re: VACUUM FULL siv ntev sij hawm ua kom tiav. hais lus, lub tshuab nqus tsev puv tsis tsim nyog, thiab tag nrho tsis yog ib lub tswv yim zoo. hnov) koj tuaj yeem txo qhov cuam tshuam los ntawm kev tawg txoj haujlwm. txoj hauj lwm yuav tsum xwb coj txog 5 feeb.

Tom qab ntawd, lo lus nug yog, lub tshuab nqus tsev puas ntsuas lub rooj xauv? VACUUM analyze ua a VACUUM thiab ces ib SAIB rau txhua tus xaiv rooj . Daim ntawv no qeeb qeeb dua thiab yuav tsum muaj qhov tshwj xeeb xauv ntawm ib leeg rooj thaum nws tab tom ua. Thaum cov npe kev xaiv nyob ib puag ncig los ntawm cov kab lus, cov kev xaiv tuaj yeem sau rau hauv ib qho kev txiav txim.

Yog li ntawd, lub tshuab nqus tsev puas puv reindex?

A REINDEX tam sim tom qab a VACUUM FULL tsis muaj nuj nqis vim VACUUM FULL nws tus kheej rebuilds lub indexes. Qhov no yog hais nyob rau hauv 9.4 cov ntaub ntawv nyob rau hauv Recovering Disk Space: Lub TAG NRHO kev xaiv ua tsis shrink indexes; ib ntus REINDEX tseem pom zoo.

Dab tsi yog kev siv lub tshuab nqus tsev hauv PostgreSQL?

Cov VACUUM nqe lus yog siv kom rov qab khaws cia los ntawm kev tshem tawm cov ntaub ntawv tsis siv neeg lossis tuples los ntawm PostgreSQL database.

Pom zoo: