To better suit your reporting environment, you can change the type of Java Virtual Machine (JVM) that Cognos 8 components use, based on the following criteria:
Java HotSpot Client VM
Use this JVM for proof of concept, demonstration, or development environments. This JVM is specially tuned to reduce both the startup time for applications and the memory footprint.
This is the default setting for Cognos installations on Windows. On UNIX and Linux platforms, Cognos does not provide a Java Runtime Environment (JRE). Therefore, the default JVM that Cognos 8 components use depends on the current setting in your existing JRE.
Java HotSpot Server VM
Use this JVM for long-running server applications to maximize operating speeds when performance is more important than fast startup time.
For more information, see the Sun Microsystems Inc. Web site.
Go to the location where your Java Runtime Environment (JRE) libraries are installed:
In Windows, go to c8_location\bin\jre\jre_version\lib\i386.
In UNIX or Linux, go to JAVA_HOME/jre/lib.
Open jvm.cfg in an editor.
Ensure that the JVM that you want to use is the first uncommented line. Enter the appropriate text for the JVM you want to use:
JVM | Text |
Hotspot Client | hotspot |
Hotspot Server | server |
Save and close the file.