Recovery Management for DB2

The architecture of Recovery Management for DB2 is centered around several key components designed to provide a comprehensive backup and recovery solution. The core components include COPY PLUS, Log Master, RECOVER PLUS, RECOVERY MANAGER, and the SNAPSHOT UPGRADE FEATURE. COPY PLUS is responsible for creating consistent image copies of DB2 data.

These image copies are essential for point-in-time recovery and are managed using JCL scripts. Log Master manages DB2 logs, which are crucial for recovering data to a specific point in time. RECOVER PLUS utilizes the image copies and logs to restore data.

The RECOVERY MANAGER component provides an interface for managing and automating the recovery process. The SNAPSHOT UPGRADE FEATURE enables efficient database upgrades by leveraging snapshot technology. Communication between these components is primarily through the z/OS operating system and DB2's internal mechanisms.

The product relies on DB2's logging and recovery features to ensure data consistency. The product integrates with z/OS security, using RACF for authentication and RBAC for access control. Image copies can be stored on various storage devices, and the product supports encrypted image copies for enhanced security.

The ISPF interface and JCL scripts are the primary administrative interfaces. The product's architecture is designed to minimize downtime and ensure data integrity during backup and restore operations. The product's logging capabilities provide detailed audit trails for compliance and troubleshooting.