How to Diagnose and Fix the ORA-00111 Invalid Attribute String Error in Oracle

If you encounter the ORA-00111 error in Oracle, it means that an invalid attribute string was specified in a parameter file. This error can occur for a variety of reasons, and it’s important to diagnose the issue accurately in order to fix it. Here are some common scenarios and solutions for resolving the ORA-00111 error.

1. Incorrect Syntax in Parameter File

If the error is caused by an invalid attribute string in a parameter file, you should review the file and ensure that the syntax is correct. Look for any typos or missing quotation marks, and make sure that the attribute string is properly formatted. Here’s an example of a parameter file with an incorrect attribute string:


To fix this, you should correct the attribute string to a valid value:


2. Invalid Initialization Parameter

Another possibility is that the error is caused by an invalid initialization parameter in the Oracle database. You can use the following query to check for invalid initialization parameters:

SELECT name, value, isdefault FROM v$parameter WHERE isdefault = 'FALSE' AND isdeprecated = 'FALSE';

If you find any invalid initialization parameters, you should correct them or remove them from the configuration.

3. Invalid Attribute in SQL Statement

The ORA-00111 error can also occur if an invalid attribute string is used in a SQL statement. For example:


To fix this, you should review the SQL statement and ensure that the attribute string is valid. If necessary, update the attribute string to a correct value.

4. Check Oracle Documentation

If you’re still unable to diagnose and fix the ORA-00111 error, it’s a good idea to consult the Oracle documentation or seek assistance from Oracle support. The documentation can provide detailed information about the error and offer specific solutions for resolving it.

In conclusion, the ORA-00111 error in Oracle can be caused by various issues related to parameter files, initialization parameters, and SQL statements. By carefully diagnosing the specific cause of the error, you can effectively fix it and ensure the smooth operation of your Oracle database.

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