Releasing unused memory from BW engine's heap.
Article ID: KB0089069
Updated On:
| Products | Versions |
|---|---|
| TIBCO ActiveMatrix BusinessWorks | - |
| Not Applicable | - |
Description
Description:
BW expands and consumes the entire heap space while processing large messages. After processing, BW is not reducing the heap. Under some circumstances, there may be a need to have the JVM release memory and reduce the heap size dynamically during run time.
BW expands and consumes the entire heap space while processing large messages. After processing, BW is not reducing the heap. Under some circumstances, there may be a need to have the JVM release memory and reduce the heap size dynamically during run time.
Issue/Introduction
Releasing unused memory from BW engine's heap.
Resolution
This is a known issue regarding Java. Once memory is committed to a Java
application, it will not be released unless the application is
restarted. The BW Engine internally uses the Java Runtime Environment, which causes this behavior.
Setting the following JVM parameters may help.
-XX:MinHeapFreeRatio
-XX:MaxHeapFreeRatio
Sample change in the TRA file.
java.extended.properties = -XX:MinHeapFreeRatio=52 -XX:MaxHeapFreeRatio=90 -XX:GCTimeRatio=19
Additional Information
Refer to the following link for more information about these parameters.
http://www.oracle.com/technetwork/java/javase/tech/vmoptions-jsp-140102.html
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