Iroducio

Oracle daabases are widely used i moder eerprise eviromes o sore ad maage criical busiess daa. However, like ay oher daabase, Oracle daabases are proe o failures ad may require recovery i he eve of a disaser. I his aricle, we will discuss he various mehods o recover a Oracle daabase.。

Backup ad Recovery

Oe of he mos impora aspecs of Oracle daabase maageme is backup ad recovery. Oracle provides several ools ad echiques o ake backups of he daabase, icludig full, icremeal, ad differeial backups. These backups ca be used o recover he daabase i case of a disaser.。

Poi-i-Time Recovery

Poi-i-ime recovery (PITR) is a echique used o recover a Oracle daabase o a specific poi i ime. PITR requires a full backup ad all archived logs sice he backup. Usig his echique, you ca recover he daabase o a specific SC (Sysem Chage umber) or ime samp. PITR is useful whe you wa o recover he daabase o a sae jus before a failure occurred.。

Complee Recovery

Complee recovery is used o recover a Oracle daabase o is curre sae. This echique requires a full backup ad all archived logs sice he backup. Complee recovery is useful whe he daabase is compleely los due o a hardware failure or a caasrophic eve.。

Media Recovery

Media recovery is used o recover a daabase usig a backup ake from a differe sysem. This echique is useful whe he primary sysem is compleely los, ad you eed o recover he daabase o a differe sysem. Media recovery requires a backup of he eire daabase ad all archived logs sice he backup. Afer he recovery, he daabase ca be moved back o he origial sysem.。

Coclusio

I coclusio, Oracle daabases are criical o moder eerprise eviromes, ad recoverig hem i case of a disaser is esseial. Oracle provides several ools ad echiques o recover he daabase, icludig backup ad recovery, poi-i-ime recovery, complee recovery, ad media recovery. I's impora o have a solid backup sraegy ad a pla for recovery i case of a disaser o esure busiess coiuiy.。

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