After installing the latest Java 7 Development Kit (Java SE 7u11) on my Windows 7 Professional 32bit PC with 4Gb RAM, I noticed I can't allocate much memory for Tomcat.
Whereas these memory settings worked for Java Development Kit 6u38:
set JAVA_OPTS=-server -Xms978m -Xmx978m -XX:MaxPermSize=512m
...when run with jdk7, these settings cause the Tomcat launcher to exit with following error message:
Error occurred during initialization of VM
Could not reserve enough space for object heap
Error: Could not create the Java Virtual Machine.
Error: A fatal exception has occurred. Program will exit.
I tried lowering the Xms and Xmx settings, and apparently, it won't work with more than 512m:
set JAVA_OPTS=-server -Xms512m -Xmx512m -XX:MaxPermSize=512m
systeminfo |find "Available Physical Memory" tells me that I have 1200mb available memory.
Has anything changed w.r.t. memory management of Java 7, and does this mean that Java 7 can only work with lower amounts of memory?
Thanks for any advice,