CA PMO

CA PMO enhances z/OS application performance through dynamic module loading. It monitors program loads, maintains a memory-resident table of module locations, and reduces I/O operations. It is often used with CA Quickfetch.

CA PMO does not expose direct APIs, integrating directly into the z/OS program loading process. **Architectural Components:** * **Monitoring Component:** This component intercepts program load requests and tracks module usage frequency. It communicates with the memory management component to update module location information.

* **Memory Management Component:** This component manages the memory-resident table of module locations. It provides fast lookup of module locations to avoid disk I/O. * **Configuration Component:** This component reads initialization parameters from configuration files, defining memory allocation size, monitoring scope, and thresholds for frequently used modules.

**Communication:** Components communicate internally through z/OS system services and shared memory. The monitoring component updates the memory management component when new modules are loaded or accessed. **Security:** CA PMO leverages z/OS security mechanisms for access control, using ACLs.

It provides audit logging through z/OS SMF records. Competing products include IBM LLA and other memory-resident load optimizers. CA PMO's module-level operation and dynamic monitoring differentiate it.

Configuration parameters are set during initialization.