行业动态

Iroducio

Oracle is a widely used daabase maageme sysem ha sores impora daa for busiesses ad orgaizaios. However, someimes daa loss ca occur due o various reasos such as hardware failures, huma errors, or sofware bugs. I such cases, i becomes crucial o recover he los daa. I his aricle, we will discuss how o recover daa i Oracle o a few miues before he icide occurred.。

Recoverig Daa i Oracle

Oracle provides several ways o recover los daa, depedig o he siuaio. Oe of he mos commo mehods is o use he flashback echology ha allows users o reur he daabase o a previous sae. This echology works by resorig a sapsho of he daabase o a specific poi i ime before he daa loss occurred.。

Usig Flashback Techology

The firs sep i recoverig daa usig flashback echology is o esure ha i is eabled i he daabase. To do his, ru he followig commad:。

ALTER DATABASE FLASHBACK O;。

ex, ideify he approximae ime whe he daa loss occurred ad use he flashback query o check if he daa is available a ha ime. The flashback query allows users o view he daa as i exised a a specific poi i ime.。

For example, o view he daa i a specific able my_able as i exised 10 miues ago, ru he followig commad:。

SELECT FROM my_able AS OF TIMESTAMP (SYSDATE - ITERVAL '10' MIUTE);。

If he daa is available, i ca be recovered usig he flashback echology. To resore he daabase o a specific poi i ime before he daa loss occurred, use he commad:。

FLASHBACK DATABASE TO TIMESTAMP (SYSDATE - ITERVAL '10' MIUTE);。

This will resore he daabase o he sae i was i 10 miues ago.。

Coclusio

I coclusio, daa loss ca be a ighmare for busiesses ad orgaizaios. However, Oracle provides several ways o recover los daa, icludig he flashback echology ha eables users o reur he daabase o a previous sae. By usig he seps oulied i his aricle, users ca recover daa i Oracle o a few miues before he icide occurred.。

Tags

Oracle, daa recovery, flashback echology, daabase maageme。