COBOL and DB2 to Java or C# Migration

Many COBOL applications no longer use flat VSAM files. They now rely on relational databases such as DB2 through embedded EXEC SQL statements. This makes them strong candidates for structured modernization.

SoftwareMining converts these COBOL and SQL programs into Java or C#. The result is readable, object-oriented code that runs on standard platforms. You keep your business logic and reduce mainframe cost and long-term risk.

For higher-risk systems, you do not need to migrate everything at once. A phased model is possible. See our incremental COBOL to Java migration strategy for a controlled rollout approach.

Key Features of SoftwareMining's DB2 COBOL Translation

• SQL Dialect Conversion

  SoftwareMining automatically converts embedded SQL from COBOL syntax to Java or C#. It replaces COBOL host variables such as :FIELD with parameter formats used in Java ('?') or C# ('@'), ensuring compatibility with modern frameworks.

• Database Vendor Flexibility

  After migration, organizations can switch databases — for example, from DB2 to Oracle or MySQL. SoftwareMining supports runtime configuration of SQL return codes, allowing smooth database substitution without code changes.

• Migrating COBOL Stored Procedures

  The translator converts COBOL-based stored procedures into Java or C# equivalents compatible with Oracle, DB2, and Microsoft SQL Server. These procedures gain object orientation, structured exception handling, and easier maintenance.

• Optimized Batch Performance

  Many SQL-based COBOL systems run as daily batch jobs with strict deadlines. SoftwareMining optimizes the translated code by removing unnecessary database calls and replacing them with Java or C# library functions. This reduces network overhead while preserving identical results.