What IBM DL/I VSE can do for your business

IBM® Data Language One (DL/I) Virtual Storage Extended (VSE) is the hierarchical database management system for IBM z/VSE®. IBM DL/I is the language system used to access IBM Information Management System (IMS™) databases and its data communication system.

IBM DL/I VSE 1.12.1 is the DL/I release supplied with z/VSE V6.2. It provides increased storage capacity for a DL/I database and its segment types.

In an online environment, DL/I executes with CICS® Transaction Server for z/VSE V2.2 on z/VSE V6.2.

IBM DL/I VSE

Allocation of DL/I resources above 16 MB

Allocate these resources above the 16 MB line of storage when running in a CICS/DLI online environment: PSBs, HD data buffers, DL/I action modules, and more.

DL/I GETVIS storage in separate subpools

GETVIS storage allocation for different types of DL/I resources is assigned to different subpools including: DLIPSB, DLIWPS, DLIBFR, DLIMOD and DLIQWA.

More than one MPS system

With more than one Multiple Partition Support (MPS) System, the DL/I Master Partition Controller for the DL/I MPS function can be activated in more than one CICS/DLI online partition at the same time.

More than four GB for HD databases

DL/I Hierarchical Direct (HD) databases can be allocated on more than one VSAM dataset to get over the 4 GB limit. Up to 16 datasets can be defined.

DL/I partitioning

DL/I Hierarchical Direct (HD) databases can be divided into different sections called partitions. This allows to overcome the 4 GB limit for a single segment type.

Get more details about these key features in IBM DL/I VSE

  • Allocation of DL/I resources above 16 MB
  • DL/I GETVIS storage in separate subpools
  • More than one Multiple Partition Support (MPS) System
  • More than four GB for HD databases
  • DL/I Partitioning