Can I increase the buffer size for data areas to 13K even if the block size for all my Datacom areas is still 4K?

Products

• Datacom
• DATACOM - AD
• CIS
• COMMON SERVICES FOR Z/OS
• 90S SERVICES
• DATABASE MANAGEMENT SOLUTIONS FOR DB2 FOR Z/OS
• COMMON PRODUCT SERVICES COMPONENT
• Common Services
• CA ECOMETER SERVER COMPONENT FOC
• Easytrieve Report Generator for Common Services
• INFOCAI MAINTENANCE
• IPC
• UNICENTER JCLCHECK COMMON COMPONENT
• Mainframe VM Product Manager
• CHORUS SOFTWARE MANAGER
• CA ON DEMAND PORTAL
• CA Service Desk Manager - Unified Self Service
• PAM CLIENT FOR LINUX ON MAINFRAME
• MAINFRAME CONNECTOR FOR LINUX ON MAINFRAME
• GRAPHICAL MANAGEMENT INTERFACE
• WEB ADMINISTRATOR FOR TOP SECRET
• Xpertware

Issue/Introduction

The first value in the MUF SYSIN DATAPOOL card (a.k.a.DATALN) defines the size of the buffers used for data areas access (data buffers).  

We are planning to increase the block size of all our user data areas. Currently all these areas have a block size set to 4K. Is there any problem increasing the DATALN value from 4K to 13K? 

Environment

Release:
Component: DB

Resolution

No, there is no problem but a lot a storage is wasted, as each 13K block will contain only 4K of data. 

Additional Information

See DATAPOOL card definition