ORA-58021
file name 'file_name' contains empty template name
- file_name: The name of the file with the empty template name.
Cause
A file name was specified that did not contain a template name. Once a template name is indicated with an opening parentheses ( character, one or more characters that are alphabetic, numeric, or the characters _, ., -, and # must follow.
Action
Correct the file name specification.