recommended settings for SUN JDK
sun no longer exists, there IS NO "sun" jdk
there IS the oracle java and the open source "OpenJDK"
almost every OS has moved to the OpenJDK after oracle wanted to close source java
as to memory problems ???
without knowing even the VERY basic information there is NO way we can even think of helping
we do NOT know what operating system this is other than " some" type of RHEL
red hat what???
4 ,5 or 6
you say 64 bit
BUT what VERSION of java is installed ????
and is it 32 bit or 64 bit?
and what is the HARDWARE ?
dose this box have less that 512 meg ram ?
more than 8 Gig's of ram ?