Message Oracle PLS-00125 - type name expected

ERRORtype name expected
CAUSEWhen a constant or variable was declared, its datatype was not specified. For example, the code might look like pi CONSTANT : = 3.14159; -- should be CONSTANT REAL : = 3.14159 Every constant and variable must have a datatype, which specifies a storage format, constraints, and valid range of values.
ACTIONSupply the type name