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Technical Capabilities
LANGUAGES
VX/COBOL - OpenVMS COBOL to ANSI COBOL
VX/C - OpenVMS C to ANSI C
VX/FORTRAN - OpenVMS FORTRAN to ANSI FORTRAN
VX/PASCAL - OpenVMS PASCAL to ANSI C++
VX/BASIC - OpenVMS BASIC to ANSI C
DCL
VX/CDD - OpenVMS CDD
VX/SOR - OpenVMS SORT MERGE
VX/JSP - OpenVMS Print & Batch
VX/DCL - OpenVMS DCL
VX/CLD - OpenVMS CLD Compiler
VX/MMS - OpenVMS MMS to make and XML
VX/LCKMGR: OpenVMS Lock Manager
API
CLI$ - OpenVMS Command Interface
CONV$ - File Conversion
VX/RT APIs
STR$ - STRING Interface Routines
LIB$ - General Routines
COB$ - COBOL Support Routines
SYS$ - SYS$ Interface Routines
PAS$ - PASCAL Support Routines
FORMS$ - DECFORMS Integration
OTS$ - Data Conversion Routines
MTH$ - MATH Routines
BAS$ - BASIC Runtime Support
EXE$ - Operating System Interface
FOR$ - FORTRAN Support Routines
EDT$ - Callable Editor
FMS$ - Forms Management System
LBR$- Callable Librarian
SMG$ - Screen Management
SOR$ - Interface to SORT
SQL$ - SQL Database Interface
FDL$ - File Definition Language
DEC FORMS/SCREENS
VX/SMG - SMG
VX/FMS - OpenVMS Forms Management
VX/DECFORMS - DECforms IFDL Compiler and FORMS$
RMS
VX/DATAX - OpenVMS RMS Data exchange
VX/FDL - File Description Language Routines
VX/RMS - SYS$ Routines for RMS
ACMS
VX/RTR - OpenVMS RTR V2 to Async RTR V3
VX/DMQ - OpenVMS DMQ (PAMS) for x86 Linux
VX/ACMS - OpenVMS ACMS(TDF,MDF,GDF,ADF) to C++
RDB
VX/PF2PC-FORTRAN - FORTRAN with embedded SQL to Pro*C
VX/SQLMOD- SQLMOD to Embedded SQL
UTILITIES
VX/CDD - OpenVMS CDD
VX/JSP - OpenVMS Print & Batch
VX/CLD - OpenVMS CLD Compiler
VX/MSG - OpenVMS Message Compiler
VX/MMS - OpenVMS MMS to make and XML
VX/LCKMGR: OpenVMS Lock Manager
VX/DATAX - OpenVMS RMS Data exchange
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LBR$- Callable Librarian

LBR$- Callable Librarian

Overview

VX/LBR provides a call-compatible implementation of the OpenVMS Librarian (LBR$) API for Linux . It enables seamless migration of OpenVMS library management routines, preserving existing functionality and workflows.

Key Features

• Fully compatible with OpenVMS LBR$ APIs.

• Supports library management functions such as record storage, retrieval, indexing, and deletion.

• Allows seamless migration of OpenVMS applications using LBR$ routines.

• Integrates with VX/RT for enhanced portability on Linux..

• Preserves existing development processes without requiring major code modifications.

VX/RT LBR$ Callable Routines

LBR$ API Function
LBR$CLOSEClose library file
LBR$DELETE_DATADelete library data
LBR$DELETE_KEYDelete a library key
LBR$FINDFind a record in library
LBR$GET_HELPRetrieve help text from library
LBR$GET_INDEXRetrieve index info
LBR$GET_RECORDGet a record from library
LBR$INI_CONTROLInitialize control block
LBR$INSERT_KEYInsert key in library
LBR$LOOKUP_KEYLook up key in library
LBR$OPENOpen a library file
LBR$OUTPUT_HELPOutput help text
LBR$PUT_ENDMark end of library update
LBR$PUT_RECORDStore record in library
LBR$REPLACE_KEYReplace a key in library
LBR$SET_LOCATESet location in library
LBR$SET_MOVESets the movement of library records

Why Use VX/LBR?

• Enables direct porting of OpenVMS applications that depend on LBR$.

• Provides full compatibility with OpenVMS Librarian functionality.

• Supports both record-based and key-based library operations.

• Seamlessly integrates into the VX/RT ecosystem for complete OpenVMS compatibility on Linux.

VX/LBR ensures that VMS applications requiring LBR$ services can be migrated without major modifications, preserving productivity and minimizing development costs.

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Frequently Asked Questions

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What is VX/LBR and how does it help with OpenVMS migrations?

VX/LBR provides a call-compatible implementation of the OpenVMS Librarian (LBR$) API for Linux. It enables seamless migration of OpenVMS library management routines, preserving existing functionality and workflows without requiring major code modifications. This allows organizations to modernize their infrastructure while maintaining their valuable software investments. Contact us to discuss your OpenVMS migration requirements.

Which LBR$ functions are supported by VX/LBR?

VX/LBR supports all essential LBR$ functions including LBR$OPEN, LBR$CLOSE, LBR$GET_RECORD, LBR$PUT_RECORD, LBR$FIND, LBR$DELETE_DATA, and key management operations like LBR$INSERT_KEY and LBR$LOOKUP_KEY.

How does VX/LBR integrate with VX/RT?

VX/LBR seamlessly integrates into the VX/RT ecosystem, providing enhanced portability on Linux and complete OpenVMS compatibility when used alongside other VX/RT components.

What library operations does VX/LBR support?

VX/LBR supports both record-based and key-based library operations, including record storage, retrieval, indexing, deletion, and comprehensive library management functions.

How does VX/LBR preserve existing development workflows?

VX/LBR maintains full compatibility with OpenVMS Librarian functionality, allowing development teams to continue using familiar processes and procedures. The API provides identical behavior to OpenVMS LBR$ routines, ensuring that existing scripts, build processes, and library management workflows function unchanged on Linux. Companies like Telstra have successfully preserved their operational processes during similar migrations.

Does VX/LBR require code modifications for migration?

No, VX/LBR enables direct porting of OpenVMS applications without major modifications to existing code that uses LBR$ routines.

What types of library management can VX/LBR handle?

VX/LBR handles comprehensive library management including help text systems (LBR$GET_HELP, LBR$OUTPUT_HELP), index operations (LBR$GET_INDEX), record positioning (LBR$SET_LOCATE, LBR$SET_MOVE), and complete library lifecycle management from initialization through updates and closure.

What are the key benefits of using VX/LBR for migration projects?

VX/LBR delivers significant value by preserving productivity and minimizing development costs during OpenVMS to Linux migrations. Organizations maintain their existing library management infrastructure while gaining the benefits of modern Linux platforms.

The solution provides full API compatibility, supports all library operations, and integrates seamlessly with other VX/RT components. Companies like SEB have leveraged similar migration strategies to modernize their infrastructure while preserving critical functionality. Contact us to learn how VX/LBR can streamline your migration project.

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