进入：
D:\Oracle\Middleware\user_projects\domains\base_domain\startWebLogic.cmd
在call 上一行增加：
set USER_MEM_ARGS=-Xms512m -Xmx1024m -XX:PermSize=512m -XX:MaxPermSize=1024m
例如：
@ECHO OFF
@REM WARNING: This file is created by the Configuration Wizard.
@REM Any changes to this script may be lost when adding extensions to this configuration.
SETLOCAL
set USER_MEM_ARGS=-Xms512m -Xmx1024m -XX:PermSize=512m -XX:MaxPermSize=1024m
set DOMAIN_HOME=D:\Oracle\Middleware\user_projects\domains\base_domain2
call "%DOMAIN_HOME%\bin\startWebLogic.cmd" %*
ENDLOCAL