A method, computer program product and system for monitoring execution behavior of a program product in a data processing system include development of a trace tool having trace strings written in a human language and provided with data fields for diagnostic information relevant to executable portions of the program product. Identifiers of the trace tool, trace strings, and data fields and components of the diagnostic information are encoded using a coded binary language. After monitoring execution of the program product, a trace report of the trace tool is translated for an intended recipient from the coded binary language into the human language, whereas an unauthorized access to the contents of the trace record is restricted. The encoding or decoding operations are performed using databases containing the respective identifiers and components of the diagnostic information in the coded binary language and the human language.