Iroducio

Oracle is a popular daabase maageme sysem used by may orgaizaios aroud he world. Daa loss is a commo issue ha ca occur due o various reasos such as huma error, sysem failure, or hardware issues. I such cases, i is impora o have a backup ad recovery pla i place. This aricle will focus o how o recover able daa i Oracle usig SQL.。

Preparaio

Before we begi he recovery process, we eed o esure ha we have a backup of he daabase. If we do o have a backup, we will o be able o recover he los daa. I is also impora o ideify he cause of he daa loss o preve i from happeig i he fuure.。

Ideifyig he Tables

The firs sep i recoverig able daa is o ideify he ables ha coai he los daa. We ca use he followig SQL query o lis all he ables i he daabase:。

SELECT able_ame FROM all_ables;

This will give us a lis of all he ables i he daabase. We ca he ideify he able ha coais he los daa.。

Recoverig Table Daa

Oce we have ideified he able ha coais he los daa, we ca use he followig SQL commad o recover he daa:。

RECOVER TABLE able_ame UDO TABLESPACE ablespace_ame;

This commad will recover he daa from he udo ablespace. If he daa is o available i he udo ablespace, we ca use he followig commad o recover he daa from he backup:。

FLASHBACK TABLE able_ame TO BEFORE DROP;

This commad will recover he daa o he sae i was before i was dropped. We ca also use he followig commad o recover he daa o a specific poi i ime:。

FLASHBACK TABLE able_ame TO TIMESTAMP o_imesamp;

This commad will recover he daa o he specified imesamp.。

Coclusio

Daa loss ca be a sressful siuaio, bu wih a backup ad recovery pla i place, we ca recover los daa quickly ad efficiely. I his aricle, we have discussed how o recover able daa i Oracle usig SQL. By followig he seps oulied i his aricle, we ca recover los daa ad preve i from happeig i he fuure.。

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