What is the method for setting a flashback point in Oracle?

1 year ago
Emily Johnson
1 minute

There are two methods to set a flashback point in Oracle.

  1. Utilize Flashback Query: Include the Flashback Query statement in your query, as shown below:
SELECT * FROM table_name AS OF TIMESTAMP TO_TIMESTAMP('timestamp_value', 'format');

table_name is the name of the table to be queried, timestamp_value is the flashback time set, and format is the time format.

  1. Utilizing Flashback Transactions: Flashback transactions allow for the restoration of a database to a previous point in time. Below are the steps for setting up a flashback transaction.
  1. Before starting the transaction where flashback is needed, execute the following statement to enable flashback logging: ALTER DATABASE ADD SUPPLEMENTAL LOG DATA;
  2. After completing the transaction where flashback is needed, execute the following statement to set a flashback point: FLASHBACK DATABASE TO TIMESTAMP TO_TIMESTAMP(‘timestamp_value’, ‘format’);

    In this statement, timestamp_value represents the desired flashback time, and format is the time format.

It is important to note that before setting flashback points, flashback logs must be enabled, and flashback transactions can only be used when flashback logs are enabled.

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