How to restore deleted data in oracle database

Deleted data in Oracle can be restored through the following steps: Confirm that the data exists in the recycle bin. Verify that you have UNRECOVER TABLE permission. Use the UNRECOVER TABLE statement to restore the data. Optional: Use SCN to specify the specific data version to restore. Execute COMMIT to make it permanent.

How to restore deleted data in Oracle database

Step one: Confirm that the data has been deleted

• When data is deleted, Oracle Database moves the data to the Recycle Bin.
• Use the following query to confirm whether the data exists in the recycle bin:

<code class="sql">SELECT * FROM RECYCLEBIN;</code>

Step 2: Verify revoked permissions

• Only users with UNRECOVER TABLE permission can restore deleted data.
• Verify your permissions using the following query:

<code class="sql">SELECT PRIVILEGE FROM USER_SYS_PRIVS WHERE PRIVILEGE_TYPE = 'UNRECOVER';</code>

Step 3: Restore data

• Restore using the UNRECOVER TABLE statement Deleted data.
• The syntax is as follows:

<code class="sql">UNRECOVER TABLE table_name;</code>

Step 4: Specify the data to be recovered (optional)

• You can use The SCN field in the DELETE statement specifies the specific data version to be restored.
• The syntax is as follows:

<code class="sql">UNRECOVER TABLE table_name AS OF SCN scnumber;</code>

Step 5: Commit the transaction

• After restoring the data, the transaction must be committed to make the changes Effective permanently.
• Execute the following statement:

<code class="sql">COMMIT;</code>

Note:

• Restoring deleted data may affect the performance of the database.
• Before restoring data, make sure you have an up-to-date backup of your tables and data.
• If you are unable to restore your data, please contact your database administrator or Oracle Support.

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