Windows:

Install steps.
1. Create and configure a database
2. Desktop class
3. Oracle base
     D:\dev\utils\oracle
   Database Edition
     Enterprise Edition
   Character Set
     Unicode (AL32UTF8)
   Global database name
     ihorcl
   Administrative password
     System11
4. Remove the following stuff from PATH var:
  D:\dev\utils\oracle\product\11.2.0\dbhome_1\bin;

Logs:
  D:\dev\Utils\oracle\cfgtoollogs\dbca\
  D:\dev\Utils\oracle\cfgtoollogs\dbca\ihorcl\

ToBackup:
  D:\dev\Utils\oracle\product\11.2.0\dbhome_1\localhost_ihorcl\sysman\config\emkey.ora 

Non-Locked accounts:
  SYS, SYSTEM, DBSNMP, SYSMAN

Useful Oracle Services
  OracleServiceIHORCL
  OracleOraDb11g_home1TNSListener

Adjust defaults:

  sqlplus.exe system/System11@ihorcl
  SQL> alter system set processes=600 scope=spfile;
  SQL> alter system set sessions=600 scope=spfile;
  SQL> alter system set nls_length_semantics='CHAR' scope=both;
  SQL> exit

Restarting Oracle:
  http://docs.oracle.com/cd/B19306_01/server.102/b14231/start.htm

  sqlplus.exe sys/System11@ihorcl as SYSDBA
  SQL> shutdown immediate

Services Start Order:
  OracleServiceIHORCL
  OracleOraDb11g_home1TNSListener
  OracleDBConsoleihorcl