How to Diagnose and Fix the ORA-00303 Invalid Value for FREELISTS Error in Oracle

If you encounter the ORA-00303 error in Oracle, it means that the value specified for the FREELISTS parameter is invalid. This error can occur when attempting to create or alter a tablespace. In this blog post, we will discuss how to diagnose and fix this error, covering all possibilities and providing sample code for each scenario.

Diagnosing the Error

When you encounter the ORA-00303 error, the first step is to identify the tablespace or operation that is causing the issue. You can do this by checking the alert log for error messages or using the following query to identify the tablespace:

SELECT tablespace_name
FROM dba_tablespaces
WHERE tablespace_name = 'YOUR_TABLESPACE_NAME';

Once you have identified the tablespace, you can proceed with diagnosing and fixing the error based on the specific scenario.

Scenario 1: Invalid FREELISTS Value

If the error is due to an invalid value for the FREELISTS parameter, you can modify the tablespace to specify a valid value. For example, if the current value is 0, which is invalid, you can alter the tablespace to set a valid value:


Ensure that the value specified for FREELISTS is within the valid range for your Oracle version and configuration. You can refer to the Oracle documentation for more information on valid FREELISTS values.

Scenario 2: Incorrect Syntax

If the error is due to incorrect syntax when creating or altering the tablespace, review the SQL statement and ensure that the syntax is correct. Pay close attention to the FREELISTS parameter and verify that it is specified in the correct format.

Scenario 3: Compatibility Issues

In some cases, the ORA-00303 error may be caused by compatibility issues with the Oracle version or configuration. Review the Oracle documentation and release notes to ensure that the FREELISTS parameter is compatible with your Oracle version.


In conclusion, the ORA-00303 error in Oracle can be diagnosed and fixed by identifying the specific cause of the error and taking appropriate action. Whether it is an invalid FREELISTS value, incorrect syntax, or compatibility issues, understanding the error and following the steps outlined in this blog post will help you resolve the issue and successfully create or alter the tablespace.

Remember to always consult the Oracle documentation and seek assistance from Oracle support if you encounter any difficulties in resolving the ORA-00303 error.

Leave a Comment