For servers running Java 7 and hosting web applications like the administrative console, an inadequate PermSize setting might cause an OutOfMemoryError related to PermGen space, as shown in the following error log example:
[02/Mar/2016:07:50:27.017 -0600] threadID=2 category=UTIL
severity=SEVERE_ERROR msgID=-1 msg="The server experienced an unexpected
error. Please report this problem and include this log file.
OutOfMemoryError: PermGen space
()\ncom.unboundid.directory.server.core.DirectoryServer.uncaughtException
(DirectoryServer.java:15783)\njava.lang.ThreadGroup.uncaughtException
(ThreadGroup.java:1057)\njava.lang.ThreadGroup.uncaughtException
(ThreadGroup.java:1052)\njava.lang.ThreadGroup.uncaughtException
(ThreadGroup.java:1052)\njava.lang.Thread.dispatchUncaughtException
(Thread.java:1986)\nBuild revision: 22496\n"