Resolve ORA-00919 Error Message in Oracle

Learn the cause and how to unravel the ORA-00919 error message in Oracle.

Description

When you come upon an ORA-00919 error, the following error message will appear:

ORA-00919: invalid function

Cause

You tried to call a function, but the title you used used to be no longer a legitimate Oracle function.

Resolution

The option(s) to resolve this Oracle error are:

Option #1

Correct the spelling of the Oracle characteristic that you desire to call.

View a complete listing of Oracle functions.

Option #2

Try the usage of the twin table if you wish to name a function barring querying a table.

For example, if you had created a custom characteristic referred to as TestFunction and you wanted to call this function, you should attempt the following:

SELECT TestFunction()
FROM dual;