Iroducio

Oracle is oe of he mos widely used daabase maageme sysems i he world. I is a robus ad reliable sysem ha allows users o sore ad maipulae large amous of daa. However, someimes daa ca be accideally modified or deleed. This ca be a major problem for busiesses ha rely o accurae ad up-o-dae iformaio. Foruaely, Oracle provides several opios for recoverig modified or deleed daa.。

Recoverig Deleed Daa

Oe of he mos commo problems ha users ecouer is accideally deleig daa. If his happes, here are several ways o recover he daa. The firs opio is o use he flashback feaure. This feaure allows users o recover daa from a specific poi i ime. To use his feaure, he user eeds o kow he exac ime whe he daa was deleed.。

Aoher opio is o use he recycle bi. The recycle bi is a feaure i Oracle ha sores deleed daa. To recover daa from he recycle bi, he user eeds o ideify he able ha coaied he deleed daa ad he use he "flashback able" commad o recover he daa.。

Recoverig Modified Daa

I some cases, daa may be modified accideally. This ca be a more difficul problem o solve. However, Oracle provides a feaure called he "logmier" ha ca be used o rack chages o he daabase. This feaure allows users o ideify whe a specific record was modified ad wha chages were made.。

Aoher opio is o use he flashback feaure. This feaure ca also be used o recover modified daa. However, i is impora o oe ha he flashback feaure oly works if he daa has o bee overwrie by ew daa.。

Coclusio

Accideally modifyig or deleig daa ca be a major problem for busiesses ha rely o accurae iformaio. However, Oracle provides several opios for recoverig modified or deleed daa. The flashback feaure, recycle bi, ad logmier are all powerful ools ha ca be used o recover daa. By udersadig how hese ools work, users ca esure ha heir daa is always accurae ad up-o-dae.。

Tags

Oracle, Daa Recovery, Flashback, Recycle Bi, Logmier。