DB2 for z/O S Data Sharing

John Campbell IBM Distinguished Engineer How to reduce costs, increase capacity and achieve Continuous Availability with IBM DB2 Data Sharing ! The “Ultimate” Data Server !

John Campbell - Introduction ,[object Object],[object Object],[object Object],[object Object],[object Object]

Agenda ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

DB2 Data Sharing Definitions ,[object Object],[object Object],DB2A DB2B DB2n . . . Coupling Facilities

Why Go to DB2 Data Sharing? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Parallel Sysplex (PSX) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

DB2 Data Sharing Architecture IRLM Buffer Pools DB2A Coupling Facilities LOCK1 Group Buffer Pools 1 12 2 3 4 5 6 7 8 9 10 11 SCA Sysplex timers 1 12 2 3 4 5 6 7 8 9 10 11 DB2A Log IRLM Buffer Pools DB2B IRLM Buffer Pools DB2n . . . Shared DASD DB2B Log DB2n Log . . . DB2 Cat/Dir DB2 DBs

Design for Continuous Availability ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],DB2A DB2B DB2n . . . Coupling Facilities

DB2 Member Outage – Planned ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],DB2B . … .. . DB2A DB2n X DB2 Group KEY TO SUCCESS: Applications must be able to run on more than oneDB2 member – several apps are identified as candidates.

DB2 Member Outage – Unplanned ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],DB2A DB2B DB2n . . . Coupling Facilities

Dynamic Workload Balancing ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Appl Appl Appl Appl Appl Transaction Managers CICS IMS TM DB2 data sharing group z/OS Parallel Sysplex Network DDF WAS

Data Sharing Performance Summary ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

DB2 Data Sharing OLTP Scalability ,[object Object],[object Object]

Data Sharing Performance in Production ,[object Object],[object Object],[object Object],Note: “Mi” stands for ‘million instructions’ Industry Trx Mgr / DB Mgr z/OS Images CF access per Mi % of used capacity Pharmacy CICS/DB2 3 8 10% Insurance CICS/IMS+DB2 9 9 10% Banking IMS/IMS+DB2 4 8 11% Transportation CICS/DB2 3 6 8% Banking IMS/IMS+DB2 2 7 9% Retail CICS/DB2+IMS 3 4 5% Shipping CICS/DB2+IMS 2 8 9%

Application Changes ? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Customers using DB2 Data Sharing

Why should you exploit DB2 Data Sharing ? ,[object Object],[object Object],[object Object],[object Object]

Continuous Availability ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Enhanced Operational Capability and Return On Investment ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Low Implementation Risk ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

CheckFree – Real Customer Experience

DB2 for z/O S Data Sharing

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