SP05 java.lang.OutOfMemoryError: PermGen space

it.eng.spagobi.commons.filters.SpagoBICoreCheckSessionFilter.doFilter:
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Exception in thread ""http-bio-8080"-exec-5"
Exception: java.lang.OutOfMemoryError thrown from the UncaughtExceptionHandler in thread ""http-bio-8080"-exec-5"
Exception in thread ""http-bio-8080"-exec-8" Exception in thread ""http-bio-8080"-exec-6" java.lang.OutOfMemoryError: PermGen space
Exception in thread ""http-bio-8080"-exec-9" java.lang.OutOfMemoryError: PermGen space
java.lang.OutOfMemoryError: PermGen space
Exception in thread ""http-bio-8080"-exec-7" java.lang.OutOfMemoryError: PermGen space
Exception in thread ""http-bio-8080"-exec-10" java.lang.OutOfMemoryError: PermGen space


Cause - Less memory assigned to application server

solution : Need to increase memory parameter or add memory parameter in "cataline.bat" file of apache tomcat. (at line number 286, before line "rem Execute Java with the applicable properties")

set "JAVA_OPTS=%JAVA_OPTS% -Xms2048m -Xmx2048m -XX:PermSize=512m -XX:MaxPermSize=512m"