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

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