2.4 KiB
MVS Messages Naming
The first three, occasionally four, characters of the component/program name identify the program, and usually, serve to identify the error messages issued by the program. Many of the prefixes originated in the OS/360 era, or earlier, and the origin of the prefix letters is no longer known. Currently IBM maintains a registry of prefixes assigned both by IBM and by third parties. Some of the known prefixes are:
ADF TSO Session Manager AHL MVS Generalized Trace Facility AMA AMB AMD MVS Service Aids BLS IPCS (Interactive Problem Control System) DFH CICS DFS IMS/DLI HASP JES2 IAT JES3 IBC Stand-alone utilities (DASD Initialization, Dump/Restore, etc.) IBM PL/I library ICB Mass Storage System Communicator ICE Sort/Merge ICF Power Warning Feature ICG Mass Storage Control Table Create ICH RACF (Resource Access Control Facility) ICK Device Support Facilities IEA System control (storage/task management, etc.) IEB Non-privileged utilites (utilities which do not invoke privileged functions) IEC Data Management, Input/Output Supervisor IED TCAM (Telecommunications Access Method) IEE Master Scheduler, Operator's console IEF Job Management (Master Scheduler, Initiator, Reader, Writer, etc.) IEG Graphics Management IEH Privileged utilities (utilities which invoke privileged functions) IEI System Generation messages IEK FORTRAN H compiler IEL PL/I Optimizing compiler IEM PL/I F compiler IEN PL/I checkout compiler IEP COBOL E compiler IEQ COBOL F compiler IER MVT Sort/Merge IES RPG compiler IEU Assembler F IEV Assembler H IEW Program Management (Linkage Editor, Loader, Program Fetch, Overlay Supervisor) IEX ALGOL compiler IEY FORTRAN G compiler IFA SMF (System Management Facilities) IFB Environmental Recording IFC EREP (Environmental Record Editing and Printing) IFD OLTEP (Online Test Executive Program) IFE FORTRAN IV H extended compiler IFO OS/VS Assembler XF IGC SVC (Supervisor Call) functions IGF Recovery Management IGG Open, Close, End-of-Volume transient modules for type 4 SVCs IGI FORTRAN IV G1 IHC FORTRAN IV library IHE PL/I F library IHI ALGOL library IHJ Checkpoint/Restart IHL OS Generalized Trace Facility IKF ANS COBOL compiler and OS/VS COBOL compiler IKJ TSO IKM PL/I Syntax Checker IKT TSO/VTAM ILR MVS Auxiliary Storage Management IMA IMB IMD OS Service Aids IMC OS Job Queue utilities IPD FORTRAN IV Syntax Checker IRA MVS System Resources Manager IRB MF/1 (Measurement Facility/1) IST VTAM