如何在shell脚本中设置jvm堆大小

Question

In korn shell script I have this.

#!/bin/ksh

. /xxxxxx/Classpath.sh
export JAVAHOME=/usr/java5
export PATH=$JAVAHOME/bin:$PATH
export PATH
export CLASSPATH
export _JAVA_OPTIONS="-Xmx1g"
java .......

Getting the below error. Tried the java options as above. But, still getting the same error?? Please need help with this. Thanks.

JVMDUMP006I Processing dump event "systhrow", detail "java/lang/OutOfMemoryError" - please wait.
JVMDUMP032I JVM requested Snap dump using '......trc' in response to an event

Answer 1

Keep a variable for JVM_ARGS and PROG_ARGS , place VM_ARGS and PROG_ARGS at appropriate positions like below

java <JVM_ARGS> com.test.Main <PROG_ARGS>

Example:-

export CLASSPATH=${CLASSPATH}:${CONFIG_DIR};

JVM_ARGS="-Dprocess.name=MainProcess -Xmx1024M -Xms256M "

PROG_ARGS="/home/saravana/files"

$JAVA_HOME/bin/java $JVM_ARGS com.test.Main $PROG_ARGS

add all your dependent lib in classpath variable, add your JVM_ARGS like starting & max heap, process name, add your program args in PROG_ARGS

JVM_ARGS, PROG_ARGS are just variable names you can keep any names