Checkpoint Facility Modernization Guide

Checkpoint Facility is a software product designed to provide checkpoint and restart capabilities for batch applications, including those using Db2 databases. It allows applications to be restarted from a specific point in case of failure, reducing the need to rerun the entire job.

Checkpoint Facility is a tool set that provides functionality for checkpointing and restarting batch applications. It is not a complete system or application but rather a set of utilities and functions that integrate with existing applications.

Organizations that run large batch jobs, especially those interacting with Db2 databases, are the most likely to benefit from Checkpoint Facility. These organizations often include those in the financial, insurance, and retail sectors.

A company should consider using Checkpoint Facility when they experience frequent failures in long-running batch jobs, leading to significant time and resource waste. It is also useful when regulatory requirements mandate efficient recovery mechanisms.

Alternatives to Checkpoint Facility include BMC AMI Application Restart and VSAM Recovery. These products offer similar checkpoint and restart capabilities for batch applications in z/OS environments.

Checkpoint Facility requires a z/OS environment and typically integrates with Db2 subsystems. It may also require specific storage mechanisms for storing checkpoint data.

As a mainframe product, Checkpoint Facility runs in an LPAR under z/OS. It is dependent on the z/OS operating system and may require specific subsystems to be active.

Checkpoint Facility enhances batch application processing by providing checkpoint and restart capabilities. It is not a standalone product in the sense that it requires batch applications to function, but it operates independently to manage checkpoints.

Checkpoint Facility typically requires a z/OS environment with Db2 installed and configured. It also needs sufficient storage space for checkpoint datasets and may require specific JCL modifications to integrate with batch jobs.

Checkpoint Facility solves the business problem of lost productivity and wasted resources due to batch job failures. By enabling quick restarts, it minimizes downtime and ensures timely completion of critical processes.

If an organization does not use Checkpoint Facility, they risk increased downtime, higher operational costs, and potential delays in critical business processes due to batch job failures. Rerunning entire jobs can be time-consuming and resource-intensive.

A company should consider buying Checkpoint Facility when the cost of batch job failures outweighs the investment in the software. This includes considering the cost of downtime, wasted resources, and potential business impact.

Checkpoint Facility may not be a good fit for organizations with very short-running batch jobs or those that rarely experience failures. In such cases, the overhead of implementing and maintaining the software may outweigh the benefits.

Checkpoint Facility's security features primarily focus on controlling access to checkpoint datasets and ensuring the integrity of restart data. It leverages z/OS security mechanisms for authentication and authorization.

Checkpoint Facility integrates with z/OS security systems, such as RACF, ACF2, or Top Secret, for authentication. It uses these systems to verify the identity of users and control access to resources.

Checkpoint Facility uses an access control model based on z/OS security mechanisms, such as RACF, ACF2, or Top Secret. These systems provide role-based access control (RBAC) capabilities to manage user permissions.

Checkpoint Facility is typically deployed on-premise in a z/OS environment. It requires technical expertise to configure and integrate with existing batch applications.

Implementing Checkpoint Facility requires a strong understanding of z/OS, Db2, and batch processing concepts. It also requires familiarity with JCL and system programming.

Ongoing operational requirements for Checkpoint Facility include monitoring checkpoint activity, managing checkpoint datasets, and ensuring the integrity of restart data. Regular maintenance and updates may also be required.

Common implementation challenges include integrating Checkpoint Facility with existing batch applications, configuring checkpoint datasets, and ensuring compatibility with different versions of z/OS and Db2.