How to recover accidentally deleted oracle data

Oracle provides a variety of accidentally deleted data recovery methods: recovery from the recycle bin (available within 30 days); use flashback query (recovery at a specific point in time); recovery from backup (backup must be timely); use Third-party tools (more advanced). Precautions: Back up regularly, use the recycle bin, enable audit trails, test recovery plans.

Oracle Data Accidentally Deleted Recovery Guide

Question: What to do after Oracle data is accidentally deleted recover?

Answer: Oracle provides several methods to recover accidentally deleted data:

Method 1: Recover from the Recycle Bin

• If the accidentally deleted data is within 30 days, you can use the Recycle Bin function to recover it.
• Connect to the database and execute the following query:

SELECT * FROM RECYCLEBIN;

• Find the data you want to recover, then execute the following query:

RESTORE TABLE <table_name> FROM RECYCLEBIN;

Method 2: Use flashback query

• If there is no data in the recycle bin, you can use the flashback query function to restore it.
• Connect to the database and execute the following query:

SELECT * FROM <table_name> AS OF <timestamp>;

• where is a specific point in time before the data was deleted.

Method 3: Restore from Backup

• If neither Recycle Bin nor Flashback Query are available, you can restore data from backup.
• Make sure there is no backup before accidentally deleting data.
• Recover using the Oracle Recovery (RMAN) utility or Recovery Manager (RMAN) commands.

Method 4: Use third-party tools

• There are many third-party tools that can be used to recover Oracle data, such as Oracle Data Recovery Advisor or Quest Toad for Oracle.
• These tools typically provide more advanced recovery capabilities and automation.

Precautions:

To prevent data loss, it is recommended to take the following precautions:

• Back up the database regularly.
• Use the Recycle Bin function to store deleted data.
• Enable audit trails to track database activity.
• Test recovery plans regularly to ensure their effectiveness.

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