Restriction: This topic applies to Windows environments only.
When considering application migration from mainframe DB2 to SQL Server, you need answers to these important questions:
- How fast can I get my application migrated, up, and running on SQL Server?
- How do I figure out how heavily my application relies on mainframe technology?
- How can I eventually eliminate all reliance on mainframe technology such that my application uses SQL Server exclusively?
The Assess Application Migration tool helps you to analyze your COBOL and PL/I code with these questions in mind, and provides valuable information that guides you in determining the best migration option for your application. Using HCOSS, you have several options. You can:
- Migrate your code as-is to SQL Server
- Use this option if your goal is to get up and running as quickly as possible with SQL Server, without a dependency on mainframe compatibility or behavior. This is a great option if you have few statements to remediate, and you want to eliminate mainframe behavior dependency immediately.
- Migrate converted DB2 statements to SQL Server statements
- Use this option if you want to identify all SQL DB2 statements that require conversion to SQL Server statements to ensure 100% SQL Server compatibility after migration, and manually convert that code before migration. Contact
Micro Focus
SupportLine for more information on this approach.
- Migrate your original code using HCOSS without the BIND option
- Use this option if your goal is to get up and running as quickly as possible with SQL Server, but you do not want to BIND your application. This approach requires that you remediate SQL package and plan statements.
- Migrate your original code using full HOCSS functionality
- Use this option if your goal is to get up and running as quickly as possible with SQL Server. This option exploits all HCOSS functionality and ensures that your application runs with mainframe compatibility.
We also recommend that you use the Assess Application Migration tool Data Analysis feature to analyze your schema extract files and identify structures that are not supported by SQL Server, or that could require manual modification before HCOSS can accurately transfer the data to SQL Server. Data analysis includes the identification of:
- SQL data types
- SQL Stored Procedures written in an unsupported application language
- SQL Sequences
- Defined Global Tables
- SQL ALIAS objects
- SQL SYNONYMS
