JVM Initilisation failure - Could not reserve heap

[Thyagarajan Kathirvelu]

Hi,

We have a process which triggers 10 JVM process, with delay of few seconds between each process, for performing some operations on the files. Below is the snippets of the code

MEMORY_MAX=768M
MEMORY_MIN=768M
MEMORY_NEW=512M
java -server -XX:MaxPermSize=128M -Xss256k -Xms${MEMORY_MIN} -Xmx$MEMORY_MAX -XX:MaxNewSize=$MEMORY_NEW -XX:NewSize=$MEMORY_NEW -XX:SurvivorRatio=16 -XX:AppendRatio=3 -XX:+UseParallelGC -XX:ParallelGCThreads=$THREADS -XX:+AggressiveOpts $GC_LOG_SWITCH -Xloggc:$GC_LOG_FILE -cp $CLASS_DIR -Dpin.home=${PIN_HOME} -Denfo.xfmr.tp.size=5 $XSLTC_SWITCH -DprocessedDir=$PROCESSED_FILES_DIR -DdtmErrorDir=$DTM_ERROR_FILES_DIR -DerrorDir=$ERRORED_FILES_DIR XMLTransformer $1 transformENFO_ISO.xsl

Below is the java version details

java version "1.5.0_19"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_19-b02)
Java HotSpot(TM) Server VM (build 1.5.0_19-b02, mixed mode)

The box has enough memory of 12 G when we are trying start the 10 Java process. Total memory of the box is 64 G.

Can you please let us know why this issue is occuring?