How to restore database in oracle
There are three ways to recover an Oracle database: Using the RMAN utility: connect to the target database, perform a recovery operation, and then open the database. Use Flashback technology: Check the logs, determine the point in time, initiate a Flashback rollback, and open the database. Use Data Recovery Advisor: Launch the tool, select repair options, and follow the instructions in the wizard.
How to recover Oracle database
Method 1: Using RMAN (Recovery Manager)
RMAN is an Oracle utility used to back up and restore databases. To restore a database using RMAN, perform the following steps:
-
Start RMAN:
<code>rman target /</code>
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Connect to the target database:
<code>connect target /</code>
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Restore database:
<code>restore database;</code>
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Open database:
<code>alter database open;</code>
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Method 2: Using Oracle Flashback Technology
Flashback technology allows you to restore your database to a specific point in time. To restore a database using Flashback technology, perform the following steps:
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Check the existence of the Flashback log:
<code>select * from v$flashback_database_log;</code>
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Determine the point in time to restore:
<code>select to_timestamp(flashback_time) from v$flashback_database_log;</code>
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Start Flashback Rollback:
<code>flashback database to timestamp <time_point>;</code>
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Open database:
<code>alter database open;</code>
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Method 3: Use Oracle Data Recovery Advisor
Data Recovery Advisor is an Oracle tool that helps you diagnose and repair database problems. To recover a database using Data Recovery Advisor, perform the following steps:
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Start Data Recovery Advisor:
<code>oraadrvi</code>
Copy after login - Select the Data Recovery tab:
- Select the "Repair Database" option:
- Follow the instructions in the wizard.
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