Set JAVA_HOME for user!

[obiee@PTUD-VM01-2 ~]$ cat .bash_profile  # .bash_profile # Get the aliases and functions if [ -f ~/.bashrc ]; then . ~/.bashrc fi # User specific environment and startup programs PATH=$PATH:$HOME/bin export PATH #JAVA_HOME export JAVA_HOME=/u01/obiee/setup/jdk export PATH=$JAVA_HOME/bin:$PATH...

Monitoring memory and CPU using JVisualVM

[oracle@App1 ~]$ export JAVA_HOME=/u01/app/software/jdk/ [oracle@App1 ~]$ cd $JAVA_HOME/bin [oracle@App1 bin]$ ls appletviewer  javac           jconsole  jps         native2ascii  serialver apt        ...

How to upgrade java version

[omss@ptud ~]$ java -version java version "1.7.0_65" [root@ptud omss]# ln -s -v /home/omss/jdk/bin/java /usr/bin/java `/usr/bin/java' -> `/home/omss/jdk/bin/java' [root@ptud omss]# ln -s -v /home/omss/jdk/bin/javac /usr/bin/javac ln: creating symbolic link `/usr/bin/javac': File exists [root@ptud omss]# rm -fr  /usr/bin/javac [root@ptud omss]# ln -s -v /home/omss/jdk/bin/javac...

java.lang.OutOfMemoryError: PermGen space

On 64 bit platforms, the MaxPermSize should be set to 512M. Before launching the Installer, you can set the MaxPermSize in the environment as follows: export _JAVA_OPTIONS=-XX:MaxPermSize=512m If the MaxPermSize is not set to 512M, you will see the following error message: java.lang.OutOfMemoryError: PermGen spa...