Learn the cause and how to resolve the ORA-00911 error message in Oracle.
When you encounter an ORA-00911 error, the following error message will appear:
- ORA-00911: invalid character
Cause of Error
You tried to execute a SQL statement that included a special character.
How to Resolve the Error
The option(s) to resolve this Oracle error are:
This error occurs when you try to use a special character in a SQL statement. If a special character other than $, _, and # is used in the name of a column or table, the name must be enclosed in double quotations.
This error may occur if you've pasted your SQL into your editor from another program. Sometimes there are non-printable characters that may be present. In this case, you should try retyping your SQL statement and then re-execute it.
This error occurs when a special character is used in a SQL WHERE clause and the value is not enclosed in single quotations.
For example, if you had the following SQL statement:
SELECT * FROM suppliers WHERE supplier_name = ?;
You would receive the following error message:
You could correct this error by enclosing the ? in single quotations as follows:
SELECT * FROM suppliers WHERE supplier_name = '?';