A Free Oracle Performance Tool AMON


This is a main page of AMON, the free interactive tool for performance monitoring of Oracle databases.

The tool is written completely in C using Oracle OCI API and UNIX Curses library. This allows AMON to run on every UNIX terminal. After downloading the tool, you can immediately start to use it, if the environment variables (ORACLE_HOME, PATH, LD_LIBRARY_PATH, ORACLE_SID) are set correctly. (If SQL*Plus can run, then AMON should execute as well.)

The tool executes only SELECT statements, so that you can easily test it on any database.

Why shall I use this tool additionally to Grid Control, SQL Developer or Toad? The answers could be:

  1. Sometimes you have got only a UNIX terminal (like a PUTTY window). This could be a case, if only the SSH port is allowed or if you work over VPN connection.
  2. You are comfortable with the Oracle dynamic views. You could of course just use SQL*Plus. But it's easier to monitor the changing information with AMON, because the tool already calculates the delta values and refreshes the window automatically.
  3. You are already using a UNIX terminal for your work. If you want to check some information, it's faster to use AMON and check, for instance, a hanging session or the wait events instead of starting a GUI or a browser.

This tool is developed by Andrej Simon, Oracle Germany in my free time. If you have any questions or comments, please contact me directly (andrej.simon@oracle.com).


Version history

  • Version 1.13.1 (12-Mar-2019)
    First version to support database releases 18c and 19c.
    Posted Mar 12, 2019, 1:44 PM by Andrej Simon
  • Beta Version 1.12beta2 (07-Aug-2018)
    Beta version with database 18c support.
    Posted Aug 7, 2018, 11:56 AM by Andrej Simon
  • Version 1.11 (29-Nov-2017)
    Minor bug fixes for the release 12.2.
    Posted Nov 29, 2017, 2:01 PM by Andrej Simon
  • Version 1.10 (25-May-2017)
    Minor bug fixes.
    Posted May 25, 2017, 6:28 AM by Andrej Simon
  • Version 1.9 (13-Sep-2016)
    • Removed limit for -t report option. Added "baseline" specific name for -t option to show recommended statistics.
    • Added multitenancy support to -t option.
    • Removed limit for the number of filter options (-f). Many filters are allowed. It's possible to use "+" and "-" characters in the filter name to specify OR or NOT condition. The default condition is AND.
    • Added new -as (ASH sessions) report.
    • Improved multitenancy support.
    Posted Sep 13, 2016, 9:16 AM by Andrej Simon
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Freeware disclaimer: The author, Andrej Simon, of this freeware accepts no responsibility for damages resulting from the use of this product and makes no warranty or representation, either express or implied, including but not limited to, any implied warranty of merchantability or fitness for a particular purpose. This software is provided "AS IS", and you, its user, assume all risks when using it.