Optimizing Storage Management › Enhancing User Storage Management › Programs in VLS Format › Panels in VLS Format

Panels in VLS Format

Under CICS, the panel buffer is always written to temporary storage at the end of the transaction and reloaded into DSA when the next transaction for that panel is executed. Each panel has one member in load module or VLS format. However, at runtime, when a panel is loaded, two portions of the panel are built:

• The reentrant portion (non-updateable) that contains the Panel Control Block (PCB).
• The non-reentrant portion (updateable) that contains the Panel Buffer (PBF). Under CICS, the panel buffer is always written to temporary storage at the end of the transaction and reloaded into DSA when the next transaction for that panel is executed.

Each user concurrently running the panel has a separate copy of the entire panel. The panel is written to CICS temporary storage at the end of each transaction. When the next transaction for that panel is executed, the panel is reloaded from CICS temporary storage