Getting Startedwith pureQuery

6
Chapter 6 - The Client Optimizer: pureQuery for Existing
JDBC Applications
In this chapter, you will learn how to optimize existing JDBC applications by using the
pureQuery Client Optimizer.
6.1 Client Optimizer: The big picture
The pureQuery Client Optimizer can help you enhance the performance, security, and
maintainability of your existing applications, usually without changing the source code. The
Client Optimizer, also known as “pureQuery for existing applications,” lets you optimize
applications at the runtime level. You can use it to optimize JDBC applications, as well as
applications developed using persistence frameworks that are based on JDBC.
Figure 9.1 shows some of the many benefits that the pureQuery Client Optimizer provides
for JDBC applications.
Static SQL
Captured-only SQL
JDBC
Application
pureQuery
Client Optimizer
SQL Replacement
SQL Literal Substitution
Easy identification of the places in your application
that execute particular SQL statements
Figure 6.1 - Some of the benefits of using the Client Optimizer
Static SQL: With the Client Optimizer, you can convert dynamically-executed SQL into
static SQL packages. Doing so will help you deliver consistent performance and an
enhanced security model with your application. For a brief description of static SQL and its
powerful benefits, see Appendix C.