"insufficient memory for the Java Runtime Environment " message in tomcat -

"insufficient memory for the Java Runtime Environment " message in tomcat -

i getting error , not sure causes issue. when run code on tomcat server 7.0.35 ,i next message:

mmap failed cen , end part of zip file

mmap failed cen , end part of zip file #

there insufficient memory java runtime environment continue. native memory allocation (malloc) failed allocate 32756 bytes chunkpool::allocate an error study file more info saved as: /opt/apache-tomcat-7.0.35/bin/hs_err_pid14852.log

update : application read mails , attacments , dowload them after parsing in required format count of unread messages 113498 (inbox) app terminates in between

java tomcat