This IBM® Redpaper™ publication is a study of the performance of a Java Platform, Enterprise Edition (Java EE) application that is hosted by an IBM CICS® Transaction Server for z/OS® (CICS) V5.2 Liberty Java virtual machine (JVM) server that connects to an IBM DB2® for z/OS database server. The use of type 2 and type 4 Java Database Connectivity (JDBC) drivers supplied by DB2 for z/OS is described, and performance comparisons are made using processor (CPU) resource use and response time data.
CPU usage data includes measurement of offload eligibility using IBM System z® Integrated Information Processors (zIIPs).
The target audience for this IBM Redpaper publication is as follows:
This paper contains a description of the Java EE application used in this performance study, and a description of the environment on which the performance measurements were made. The results from the performance measurements and an analysis of these results are presented.
This paper covers the following topics:
This paper is one in a series focused on CICS performance. It is written by members of the IBM Hursley CICS development community. The subject matter in this series is based on feedback from CICS customers.
The TradeLite application
The test environment
JDBC driver types
Configuring a JDBC driver type for a CICS Liberty JVM server
JDBC driver connection reuse mechanisms
Performance measurement procedure
Transaction scope in the TradeLite application