How to Diagnose and Fix the ORA-00489 Error in Oracle

If you are encountering the ORA-00489 error in Oracle, it means that there is an issue with the syntax used to set the transaction’s rollback segment. This error can be frustrating, but with the right diagnosis and fix, you can easily resolve it and continue working with your database.

Diagnosing the ORA-00489 Error

When diagnosing the ORA-00489 error, it’s important to first understand the context in which the error is occurring. Look for the specific query or command that is triggering the error, and check for any syntax errors or incorrect usage of the SET TRANSACTION USE ROLLBACK SEGMENT command.

You can also refer to the Oracle documentation and error code explanations to get more information about the ORA-00489 error. This can help you understand the possible causes and potential solutions for the error.

Fixing the ORA-00489 Error

Once you have diagnosed the ORA-00489 error, you can proceed with fixing it. Here are a few possible solutions to consider:

1. Check the Syntax of the SET TRANSACTION Command

Ensure that the syntax of the SET TRANSACTION command is correct, including the usage of the USE ROLLBACK SEGMENT clause. The correct syntax should be:


Make sure that the placeholder is replaced with the actual name of the rollback segment you want to use.

2. Verify the Existence of the Rollback Segment

Check if the specified rollback segment actually exists in the database. You can use the following query to verify the existence of the rollback segment:

SELECT segment_name FROM dba_rollback_segs WHERE segment_name = '</rbs><rbs>';

If the specified rollback segment is not found, you may need to create it using the appropriate CREATE ROLLBACK SEGMENT command.

3. Review the Transaction Management Settings

Review the transaction management settings in your Oracle database to ensure that they are configured correctly. This includes checking the initialization parameters related to rollback segments and transaction management.

If you are using a custom rollback segment configuration, make sure that it is properly set up and that the appropriate rollback segment is being used for transactions.

4. Consider Using Automatic Undo Management

If you are not using automatic undo management in your Oracle database, consider switching to this feature. Automatic undo management simplifies the management of undo data and can help avoid issues related to rollback segments.

You can enable automatic undo management by setting the UNDO_MANAGEMENT initialization parameter to AUTO and configuring the UNDO tablespace.


By diagnosing the ORA-00489 error and applying the appropriate fix, you can resolve the syntax issue related to the SET TRANSACTION USE ROLLBACK SEGMENT command in Oracle. Remember to carefully review the syntax, verify the existence of the rollback segment, and ensure that your transaction management settings are properly configured.

For more in-depth information and specific troubleshooting steps, refer to the Oracle documentation and seek assistance from the Oracle community or support resources.

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