Weblogic administration console way too slow

Question

I've installed weblogic 10.3.3, configured simple domain with default configuration. And after starting weblogic I cannot use it via admin console because it is starting too slow (~10 mins). It seems that admin console application is being deployed incorrectly. Even when I enable 'staging' mode in AdminConsole deployment options, it does not help. Does anybody have a solution for this problem? It really bugs me out.

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Configuration properties:

Server: Dell PowerEdge r410 server (Six-core Intel® Xeon® x64 CPU, 8GB RAM)

OS: Ubuntu Maverick 10.10 x86_64

Weblogic: 10.3.3 x64 (used wls1033_generic.jar file for installation)

Java: 1.6.0_17_i586 (tried with different jdk's including x64, but it does not work either)

Answer 1

Turns out weblogic uses random number generator during startup. Because of the bug in java it reads random bits from /dev/random. There are almost no problems with /dev/random except that it is extremely slow. It takes sometimes 10 minutes or more to generate one number. Simple solution exists – using /dev/urandom instead. It is not that good as /dev/random, but at least it is instant. Java somehow maps /dev/urandom file to /dev/random. That’s why default settings in $JAVA_HOME/jre/lib/security/java.security are useless, they just do not make any sense.

Problem fix is very simple – adding string export JAVA_OPTIONS="-Djava.security.egd=file:/dev/./urandom" to the /etc/bash.bashrc file. Usage of /dev/./urandom instead of simple /dev/urandom is another hack. JVM does not understand the option value otherwise.

Be aware of this problem if you try to setup weblogic under UNIX-based OS.