How to return after oracle submitted

Oracle provides the following method to fall back on committed database changes: Use the ROLLBACK statement to immediately revoke all uncommitted changes. Operation through the database management tool interface. Use Oracle Flashback technology to return to a specific point in time and restore data, flashback logging is required.

Oracle's return after submission

After the database is submitted, if the data is found to be incorrect or rollback operation is required, Oracle provides the following methods to rollback:

1. Use ROLLBACK statement

This is the most straightforward way to fallback, which immediately undoes all changes that have not been committed. The syntax is as follows:

 <code>ROLLBACK</code>

2. Backup through database management tools

Most database management tools, such as Oracle SQL Developer, provide an interface for fallback operations. You can connect to the database, select the transaction you want to rollback, and then click the fallback button.

3. Use Oracle Flashback Technology

Oracle Flashback technology allows users to return to a specific point in the database and view or restore data at that point in time. To use Flashback, flashback logging needs to be enabled.

The following steps detail the commit changes using Oracle Flashback:

• Connect to the database and enable flashback logging.

• Perform the following query:

   <code>SELECT SCN FROM v$database;</code>

• Record the "SCN" value, which represents the current system change number (SCN).

• Perform the following query to roll back to a specific SCN:

   <code>FLASHBACK DATABASE TO SCN <scn_value></scn_value></code>

• where is the SCN value you recorded in the first step.

Notice:

• The rollback operation can only be applied to uncommitted transactions.
• Oracle Flashback technology requires flashback logging to be enabled.
• Rollback can lead to data loss, so be sure to make a backup before performing a rollback operation.

The above is the detailed content of How to return after oracle submitted. For more information, please follow other related articles on the PHP Chinese website!