Oracle Host Environment
Version 12.1.0.1

General Information
Library Note Morgan's Library Page Footer
The Library is currently in the process of being upgraded from Oracle Database Version 11.2.0.3 to 12.1.0.1. Demos are being upgraded to reflect the new Container paradigm as well as EBR (Edition Based Redefinition) and may contain references to CDBs, PDBs, and other objects you may not be familiar with such as CDB_OBJECTS_AE: Welcome to 12c.
Purpose The entries on this page demonstrate ways, from within the Oracle database, to access information about the host hardware and operating system. There are ways to do it in the operating system shell environment but what is important, most often, is to see what the database has access to and what Oracle will be watching for licensing purposes.
 
Demos
Number of CPUs col value format 99999

SELECT value
FROM gv$osstat
WHERE stat_name = 'NUM_CPUS';
Amount of Physical Memory col value format 999999999999

SELECT value
FROM gv$osstat
WHERE stat_name = 'PHYSICAL_MEMORY_BYTES';
Operating System Endian Value SELECT dbms_utility.get_endianness
FROM dual;
Operating System Environment Variables set serveroutput on

DECLARE
 RetVal VARCHAR2(100);
BEGIN
  dbms_system.get_env('ORACLE_SID', RetVal);
  dbms_output.put_line(RetVal);
END;
/

DECLARE
 RetVal VARCHAR2(100);
BEGIN
  dbms_system.get_env('ORACLE_HOME', RetVal);
  dbms_output.put_line(RetVal);
END;
/

DECLARE
 RetVal VARCHAR2(100);
BEGIN
  dbms_system.get_env('TEMP', RetVal);
  dbms_output.put_line(RetVal);
END;
/

Related Topics
DBMS_SYSTEM
DBMS_UTILITY
Dynamic Performance Views
Unix and vi

Morgan's Library Page Footer
This site is maintained by Dan Morgan. Last Updated: This site is protected by copyright and trademark laws under U.S. and International law. © 1998-2014 Daniel A. Morgan All Rights Reserved