Database Reference
In-Depth Information
Tuning of the Java Virtual Machine
(JVM)
Oracle SOA Suite 11g in simplified form is just a Java application that runs
on a J2EE compliant application server such as Oracle WebLogic Server 11g,
IBM WebSphere, or Red Hat JBoss. Although you can choose any of the
supported application servers for your Oracle SOA Suite 11g infrastructure,
this topic will focus on the more commonly used Oracle WebLogic Server.
The full list of certified application servers for Oracle SOA Suite 11g can be
Currently, there are two JVMs that are supported for Oracle WebLogic Server
11g—Sun JDK and JRockit JDK. Our performance tests have shown that using
JRockit with an Oracle SOA Suite 11g installation on Linux results, on average,
in a 32 percent performance improvement when compared to using Sun JDK. It
is, thus, our recommendation for any installation running on Microsoft Windows
and Linux operating systems (but not Oracle Solaris), including development in-
stances, to use JRockit instead.
Switching the JVM from Sun JDK to JRockit
JDK
In the event that you have already configured to use Sun JDK, follow these in-
structions, which are intended for 64-bit Linux operating systems, to use JRockit
instead. We almost always recommend a 64-bit operating system and a 64-bit
JVM to allow for larger memory allocation:
1.
Download and install Oracle JRockit JDK (latest version currently 28.2.0):
•
Download JRockit for Linux x86-64 fro
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http://www.oracle.com/technet-
