Pessoal, Já alterei o path para incluir o javac, o mysql e tudo funcionou.
Fiz tudo o que foi solicitado para alterar o path para incluir o oracle. Coloquei no final do valor da variável: C:\ProgramData\Oracle\Java\javapath;C:\Program Files (x86)\Intel\iCLS Client\;C:\Program Files\Intel\iCLS Client\;%SystemRoot%\system32;%SystemRoot%;%SystemRoot%\System32\Wbem;%SYSTEMROOT%\System32\WindowsPowerShell\v1.0\;C:\Program Files\Intel\Intel(R) Management Engine Components\DAL;C:\Program Files (x86)\Intel\Intel(R) Management Engine Components\DAL;C:\Program Files\Intel\Intel(R) Management Engine Components\IPT;C:\Program Files (x86)\Intel\Intel(R) Management Engine Components\IPT;c:\Program Files (x86)\ATI Technologies\ATI.ACE\Core-Static;C:\Program Files\Intel\WiFi\bin\;C:\Program Files\Common Files\Intel\WirelessCommon\;%JAVA_HOME%\bin;C:\Program Files (x86)\ATI Technologies\ATI.ACE\Core-Static;%MYSQL_HOME%\bin;C:\oraclexe\app\oracle\product\11.2.0\server\bin.
Já desliguei e religuei o computador e nada. Só consigo rodar o banco dentro do diretório C:\oraclexe\app\oracle\product\11.2.0\server\bin.
Quando rodo fora recebo a mensagem: Error 6 initializing SQL*Plus SP2-0667: Message file sp1.msb not found SP2-0750: You may to set ORACLE_HOME to your Oracle software directory.
E agora??
