This statement contains the name of a database or a cursor in some invalid format. If the statement is part of a program, the name might have been passed in a host variable.
The maximum length for database names and cursor names depends on the database server. In IBM Informix Dynamic Server 9.2x or later, the maximum length is 128 characters. For IBM Informix SE, database names should be no longer than 10 characters (fewer in some host operating systems). In other Informix database servers, the maximum length is 18 characters.
Both database and cursor names must begin with a letter and contain only letters, numbers, and underscore characters. In IBM Informix OnLine Dynamic Server and later Informix database servers, database and cursor names can begin with an underscore. In Dynamic Server 9.2x or later, these names can include dollar-sign characters.
In MS-DOS systems, filenames can be a maximum of 8 characters plus a 3-character extension.