Introduction
The customer has multiple applications running on Hitachi mainframe (IBM plug compatible) which included three large applications Parts Consolidation, and Order Processing from supply chain and part of the Production Management system. Due to various technological and cost constraints posed by these legacy hardware and software, client had decided to move these applications from Mainframe to UNIX based platforms while keeping the business logic unchanged. Migration of the three applications was executed in three phases and the projects were primed by Satyam.
Source Platform
Platform: Hitachi / VOS3
Data Store: ADABAS / SAM
Language: COBOL / NATURAL / ASSEMBLER / JCL
Target Platform
Platform: IBM / AIX
Data Store: ORACLE 10g / Files
Language: MF COBOL / Shell Scripts
Challenges
The major challenge lied in migrating each of these applications within a very short time frame. All the migrated applications required to be easily maintainable. The converted applications in the new target platform had to behave exactly the same way they behaved in the legacy platform. A few database fields were also expanded as a part of the migration project. Other modifications included moving the hard coded error messages in the programs to the database.
Solution Approach
Metalogic had transformed these applications to modern platforms. The salient features of this solution were:
· The ADABAS database were converted to Oracle 10g
· NATURAL, COBOL and ASSEMBLER languages got transformed to Micro Focus COBOL
· JCL was converted to Shell Scripts on AIX
· Major portion of the work was executed offshore at Metalogic’s offshore. The combination of automated, tool based approach and offshore delivery resulted in major savings.
The solution achieved more than 95% automation in conversion and modification while near 50% in automation was achieved in testing.
Status