How to diagnose and fix the ORA-00821 invalid option for CREATE TABLESPACE in Oracle

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If you encounter the ORA-00821 error when trying to create a tablespace in Oracle, it means that you have specified an invalid option in the CREATE TABLESPACE statement. This error can occur due to various reasons, such as using a deprecated or unsupported option, or a typographical error in the statement.

To diagnose and fix the ORA-00821 error, you can follow the steps below:

Diagnosing the ORA-00821 error

1. Check the CREATE TABLESPACE statement: Review the CREATE TABLESPACE statement that you are trying to execute and look for any invalid options or syntax errors.

2. Review the Oracle documentation: Refer to the Oracle documentation for the CREATE TABLESPACE statement to ensure that you are using the correct options and syntax.

3. Check for deprecated options: Some options may have been deprecated in newer versions of Oracle. Make sure that you are not using any deprecated options in your CREATE TABLESPACE statement.

Fixing the ORA-00821 error

Once you have diagnosed the ORA-00821 error, you can take the following steps to fix it:

1. Use valid options: Ensure that you are using valid options in the CREATE TABLESPACE statement. Refer to the Oracle documentation for the correct syntax and options to use.

2. Check for typographical errors: Review the CREATE TABLESPACE statement for any typographical errors, such as misspelled options or missing commas.

3. Use supported options: Make sure that you are using options that are supported in your version of Oracle. Some options may not be available in certain editions or versions of Oracle.

4. Update your Oracle version: If you are using a deprecated option, consider updating your Oracle version to a newer release that supports the option you need.

5. Seek help from Oracle support: If you are unable to resolve the ORA-00821 error on your own, consider seeking help from Oracle support or community forums for assistance.

Example

Here’s an example of a CREATE TABLESPACE statement that triggers the ORA-00821 error:

CREATE TABLESPACE example
  DATAFILE 'example01.dbf' SIZE 100M
  EXTENT MANAGEMENT LOCAL UNIFORM SIZE 1M;

In this example, the EXTENT MANAGEMENT option is missing the keyword “AUTO” or “MANUAL”, which causes the ORA-00821 error. To fix this, you can update the statement as follows:

CREATE TABLESPACE example
  DATAFILE 'example01.dbf' SIZE 100M
  EXTENT MANAGEMENT LOCAL AUTO;

By following the steps above, you can diagnose and fix the ORA-00821 error when creating a tablespace in Oracle. Remember to review the Oracle documentation and seek help from the community if needed.

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