//COBSTEP JOB (COBOL),'COMPILE',CLASS=A,MSGCLASS=H
//STEP1 EXEC IGYWCLG (compile, link, go)
//COBOL.SYSIN DD *
IDENTIFICATION DIVISION.
PROGRAM-ID. HELLO.
PROCEDURE DIVISION.
DISPLAY 'HELLO ADCD 1.13'.
STOP RUN.
/*
//GO.SYSOUT DD SYSOUT=*
//*
| If you are… | Recommendation | |-------------|----------------| | A student learning basic JCL, TSO, ISPF | ✅ Yes – but upgrade to z/OS 2.x if possible | | Developing new CICS/DB2 applications | ❌ No – use a current z/OS 2.5 ADCD or a sandbox | | Maintaining legacy code written in COBOL 4.2 | ✅ Yes – valid use case | | Testing security (RACF) policies | ❌ No – ADCD 1.13 has known vulnerabilities | | Running in a modern emulator (zD&T) | ⚠️ Possibly – but zD&T typically needs z/OS 2.x |
z/OS is a 64-bit operating system from IBM, designed for their Z series mainframes. It's used for high-end business applications requiring high reliability, security, and performance. Z Os Adcd 1.13 - 13
| Product | Typical Version | |---------|----------------| | CICS TS | V5.4 or V5.5 | | IMS | 15.1 | | Db2 for z/OS | 12 (function level 500+) | | MQ for z/OS | V9.1 | | WebSphere Application Server | Liberty (traditional optional) | | z/OS Connect | V3.0 | z/OS is a 64-bit operating system from IBM,