Exception in Thread "Http-bio-8080-exec-2" Java.lang.OutOfMemoryError:PermGen

Source: Internet
Author: User
Tags xms


Question: Start the Tomcat times error, and keep on going



Exception in Thread "Http-bio-8080-exec-2" Java.lang.OutOfMemoryError:PermGen



Exception in Thread "http-bio-8080-exec-3" Java.lang.OutOfMemoryError:PermGen



Exception in Thread "http-bio-8080-exec-4" Java.lang.OutOfMemoryError:PermGen



Exception in Thread "Timer-0" Java.lang.OutOfMemoryError:PermGen









Solve



Memory Overflow AH ~



Workaround: 

1, manually set MaxPermSize size



Modify Tomcat_home/bin/catalina.bat (catalina.sh under Linux) and add the following line to the "echo" Using catalina_base: $CATALINA _base "":



setjava_opts=%java_opts%-server-xx:permsize=128m-xx:maxpermsize=512m



Catalina.sh under:



java_opts= "$JAVA _opts-server-xx:permsize=128m-xx:maxpermsize=512m"



2, modify the contents of the Tomcat_home/bin/catalina.bat file: After%_execjava%%java_opts% add:



-xms=256m-xmx512m



Look, there are spaces around.






For example:%_execjava%%java_opts%-xms=256m-xmx512m (space), the contents of the following unchanged






3, you can consider the same third-party jar files copied to the Tomcat/shared/lib directory, which can reduce the memory of the jar file re-use. 


4,Increase the starting memory parameters for the JDK specified by the Tomcat



-xms128m-xmx512m-xx:permsize=128m-xx:maxpermsize=128m








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