Follow these four rules when naming a stored procedure or argument:
The name of a stored procedure or argument must begin with an alphabetic character. With the exception of the first character, the stored procedure or argument name may consist of alphabetic characters, numbers, punctuation, and underscores.
There can be no spaces within the name.
The length of the name cannot exceed 50 characters.
A stored procedure or argument name cannot be a reserved word. For more information about reserved words, refer to "Appendix A" in the Programmer's Reference Manual.