Optimize IMS Modernization Guide

Optimize IMS allows applications to continue issuing IMS DL/I calls, which are then converted to Db2 SQL calls. This allows migration of IMS databases and VSAM datasets to Db2 without requiring application code changes.

Optimize IMS uses configuration files to define the mapping between IMS DL/I calls and Db2 SQL. These files specify how IMS database structures are represented in Db2, and how DL/I calls are translated into SQL queries and updates.

Optimize IMS includes tools to assist in migrating IMS database definitions and data to Db2. These tools automate the process of creating Db2 tables and loading data from IMS databases.

Optimize IMS intercepts IMS DL/I calls and converts them to Db2 SQL statements. It uses mapping definitions to translate the DL/I calls into equivalent SQL operations against the Db2 database.

The main components include the DL/I interceptor, the SQL converter, and the mapping repository. The DL/I interceptor captures DL/I calls, the SQL converter translates them, and the mapping repository stores the translation rules.

Optimize IMS uses configuration files to define the mapping between IMS DL/I calls and Db2 SQL. These files specify how IMS database structures are represented in Db2, and how DL/I calls are translated into SQL queries and updates.

Optimize IMS does not expose a public API. It operates by intercepting IMS DL/I calls directly within the z/OS environment.

Optimize IMS allows organizations to modernize their database infrastructure by migrating from IMS to Db2 without requiring extensive application rewrites. This reduces the cost and risk associated with application modernization.

By migrating to Db2, organizations can take advantage of Db2's features, such as improved performance, scalability, and support for modern data warehousing and analytics.

Optimize IMS reduces the risk of application migration by allowing applications to continue using familiar IMS DL/I calls. This minimizes the need for application testing and reduces the likelihood of introducing new defects.

Optimize IMS leverages the security features of z/OS and Db2. It supports authentication methods such as RACF, ACF2, and Top Secret for user authentication. Access control is managed through Db2's grant and revoke privileges.

Optimize IMS uses Db2's built-in encryption capabilities to protect data at rest and in transit. This ensures that sensitive data is protected from unauthorized access.

Optimize IMS leverages Db2's audit logging capabilities to track user activity and data access. Audit logs can be used to monitor security events and investigate potential security breaches.

Optimize IMS is administered through standard z/OS and Db2 administration tools. User management is handled through RACF, ACF2, or Top Secret. Configuration parameters are defined in configuration files.

Optimize IMS provides logging capabilities through z/OS system logs and Db2 audit logs. These logs can be used to monitor system activity and troubleshoot issues.

Optimize IMS requires specific ports for communication between the DL/I interceptor and the Db2 database. These ports must be open in the z/OS firewall to allow communication.