20.4 DITTO Function Code Synonyms

The following table lists supported synonyms for DITTO function codes.

Function

Synonym(s)

Description

 

 

 

BS

BQ, BSQ

Create Sequential Data

 

 

 

BT

BTP

Create Tape File

 

 

 

BV

BVS

Create VSAM File

 

 

 

CS

CQ, CSQ

Card to Sequential Data

 

 

 

CV

CVS

Card to VSAM

 

 

 

DUMP

DUM

Dump CMS File to Tape

 

 

 

FP

FPR

CMS File Print

 

 

 

FT

FTP

CMS File to Tape

 

 

 

FV

FVS

CMS File to VSAM

 

 

 

LOAD

LOA

Load CMS File from Tape

 

 

 

MB

TST

Memory Browse

 

 

 

NEW

NEWS

News Command

 

 

 

OS

OQ, OTL

Object to Sequential Data

 

 

 

SC

QC

Sequential Data to Card

 

 

 

SO

QO, TLO

Sequential Data to Object

 

 

 

SP

QP, SPR

Sequential Data Print

 

 

 

SS

QQ, SSQ

Sequential Data to Sequential Data

 

 

 

ST

QT, STP

Sequential Data to Tape

 

 

 

SV

QV, SVS

Sequential Data to VSAM

 

 

 

TS

TQ, TSQ

Tape to Sequential Data

 

 

 

TV

TVS

Tape to VSAM

 

 

 

VP

VPR

VSAM Print

 

 

 

VRU

VRL

VSAM Record Update

 

 

 

VS

VQ, VSQ

VSAM to Sequential Data

 

 

 

VT

VTP

VSAM to Tape

 

 

 

VV

VVS

VSAM to VSAM

 

 

 

20.5 Batch Keywords that are No Longer Supported

The following table lists keywords that were allowed in previous releases of DITTO but are not recognized by DITTO/ESA. You can use the indicated replacement, if any.

Function(s)

Keyword

Description

Replacement

 

 

 

 

BV

BLKFACTOR=

Output blocking factor

-

 

 

 

 

TMP

TYPE=CHAR

Tape map in character format

FORMAT=CHAR

 

 

 

 

384VSE to OS/390 Migration Workbook

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Image 408
IBM OS/390 manual Ditto Function Code Synonyms, Batch Keywords that are No Longer Supported, Function Synonyms Description

OS/390 specifications

IBM OS/390, a versatile operating system, was a cornerstone in enterprise environments and played a pivotal role in mainframe computing. Released in the mid-1990s, OS/390 combined the strengths of IBM's MVS (Multiple Virtual Storage) with new features and enhancements, targeting scalability, reliability, and performance in demanding business applications.

One of the key features of OS/390 was its robust support for multiple users and processes. The system allowed thousands of concurrent users to access applications and data, ensuring high availability and minimizing downtime—a critical requirement for many large organizations. This scalability was supported through various enhancements in memory management and processor scheduling, enabling optimal resource allocation across diverse workloads.

OS/390 was known for its superior workload management capabilities. The Workload Manager (WLM) component allowed administrators to define service policies, specifying how system resources would be allocated according to the priority of tasks. This ensured that critical business processes received the necessary resources while less critical tasks were managed more flexibly.

Another significant characteristic of OS/390 was its commitment to security. The operating system provided comprehensive security features, including user authentication, data encryption, and auditing capabilities. This focus on security was vital for organizations handling sensitive data, ensuring compliance with regulations and safeguarding against unauthorized access.

OS/390 also supported advanced technologies that facilitated integration and development. The system included features like the IBM CICS (Customer Information Control System) for transaction processing and IMS (Information Management System) for database management. These technologies allowed organizations to build robust, high-performance applications tailored to specific business needs.

The ease of network integration was another strength of OS/390. With the advent of the Internet and global connectivity, OS/390 systems could easily interface with various network protocols, enabling businesses to operate in a connected world. This inclusion paved the way for many organizations to expand their capabilities and offer new services, driving digital transformation.

In conclusion, IBM OS/390 represented a significant advancement in mainframe technology, combining scalability, security, and robust workload management. Its rich feature set and support for critical enterprise applications solidified its role as a vital component of many organizations' IT infrastructures, ensuring they could meet their operational challenges head-on while supporting future growth. As technology continues to evolve, the legacy of OS/390 remains influential in the realm of computing.