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HPOM/ HPOM Server Processes Checking the HPOM Processes
Troubleshooting HPOM agents Log Files Tracing Message from opcmsg not reaching manager Humor Etc

Tracing the communication can be done (if not otherwise specified) using tracemon on the server and the HPOM agent tracing on the node. See the following chart for trace settings.


With this tool you can perform the following message operations:

  1. Acknowledge
  2. Unacknowledge
  3. Own
  4. Disown
  5. Delete

You can also change the severity of a message.

This tool is especially helpful for mass operations, since it takes only a fraction of the time the same command takes when executed in the Console.


OvChangeMsg /ch <TypeOfChange> /Exp <QualifyString> [/delim <DelimChar>]


OvChangeMsg /ch <TypeOfChange> /{FA|FU} <FileName> [/delim <DelimChar>]

SEV=<Num> Change severity of qualified messages to level <Num>.

Possible values for <Num>:

Note: DO NOT insert blanks into severity specification!




ovconfchg -ns eaagt -set OPC_TRACE TRUE\
      -set OPC_TRC_PROCS opcmsg,opcmsgi,opcmsga\
      -set OPC_DBG_PROCS opcmsg,opcmsgi,opcmsga\

Results are written in:

to stop traceing execute command:
ovconfchg -ns eaagt -set OPC_TRACE FALSE;

DNS Discovery fails

1) Check if the DNS server allows the list command (see online help)

2) Check if the Dns Discovery service is started

3) Make sure that there is no access problem to specific DNS domain.

4) Make sure that the DNS server is available.

5) Use the script test_allprov.bat to test this provider (see How to test the WMI

providers) (p.77)

How does the agent report that it is installed?

1. Agent side:

During (manual) installation a file “install_notif” is created in the agent’s tmp directory

(InstallShield or opcactivate). This triggers that the agent makes a SendInfo() RPC call to

its management server with call type CSM_C_INSTALL_NOTIF. This call contains node

properties like DNS name, IP address, OS type (uname info).

2. Server side:

The OvEpEventReceivers component (OvEpMsgActSrv.exe) processes this SendInfo call

and generates an OvEpUnmanagedAgent (OvEpInfo) object. This object is queued in

the queue file UnmanagedAgentQueue.

3. The OvEpUnmanagedAgentWriter object reads the object from the queue and:

4. Checks by using the AgentId contained in the call if the node is already managed. In

this case the OvEpUnmanagedAgent object is ignored (just tracing)

5. Otherwise a new WMI instance of class OV_UnmanagedAgent is created. In order to

populate the properties of the new WMI object a mapping of the received “uname

properties” to the OSType and SystemType value of the OV_ManagedNode class is

done (hardcoded).

6. An OvMsmAccessManager write lock is acquired and the newly created instance is

written to WMI.



Groupthink : Two Party System as Polyarchy : Corruption of Regulators : Bureaucracies : Understanding Micromanagers and Control Freaks : Toxic Managers :   Harvard Mafia : Diplomatic Communication : Surviving a Bad Performance Review : Insufficient Retirement Funds as Immanent Problem of Neoliberal Regime : PseudoScience : Who Rules America : Neoliberalism  : The Iron Law of Oligarchy : Libertarian Philosophy


War and Peace : Skeptical Finance : John Kenneth Galbraith :Talleyrand : Oscar Wilde : Otto Von Bismarck : Keynes : George Carlin : Skeptics : Propaganda  : SE quotes : Language Design and Programming Quotes : Random IT-related quotesSomerset Maugham : Marcus Aurelius : Kurt Vonnegut : Eric Hoffer : Winston Churchill : Napoleon Bonaparte : Ambrose BierceBernard Shaw : Mark Twain Quotes


Vol 25, No.12 (December, 2013) Rational Fools vs. Efficient Crooks The efficient markets hypothesis : Political Skeptic Bulletin, 2013 : Unemployment Bulletin, 2010 :  Vol 23, No.10 (October, 2011) An observation about corporate security departments : Slightly Skeptical Euromaydan Chronicles, June 2014 : Greenspan legacy bulletin, 2008 : Vol 25, No.10 (October, 2013) Cryptolocker Trojan (Win32/Crilock.A) : Vol 25, No.08 (August, 2013) Cloud providers as intelligence collection hubs : Financial Humor Bulletin, 2010 : Inequality Bulletin, 2009 : Financial Humor Bulletin, 2008 : Copyleft Problems Bulletin, 2004 : Financial Humor Bulletin, 2011 : Energy Bulletin, 2010 : Malware Protection Bulletin, 2010 : Vol 26, No.1 (January, 2013) Object-Oriented Cult : Political Skeptic Bulletin, 2011 : Vol 23, No.11 (November, 2011) Softpanorama classification of sysadmin horror stories : Vol 25, No.05 (May, 2013) Corporate bullshit as a communication method  : Vol 25, No.06 (June, 2013) A Note on the Relationship of Brooks Law and Conway Law


Fifty glorious years (1950-2000): the triumph of the US computer engineering : Donald Knuth : TAoCP and its Influence of Computer Science : Richard Stallman : Linus Torvalds  : Larry Wall  : John K. Ousterhout : CTSS : Multix OS Unix History : Unix shell history : VI editor : History of pipes concept : Solaris : MS DOSProgramming Languages History : PL/1 : Simula 67 : C : History of GCC developmentScripting Languages : Perl history   : OS History : Mail : DNS : SSH : CPU Instruction Sets : SPARC systems 1987-2006 : Norton Commander : Norton Utilities : Norton Ghost : Frontpage history : Malware Defense History : GNU Screen : OSS early history

Classic books:

The Peter Principle : Parkinson Law : 1984 : The Mythical Man-MonthHow to Solve It by George Polya : The Art of Computer Programming : The Elements of Programming Style : The Unix Hater’s Handbook : The Jargon file : The True Believer : Programming Pearls : The Good Soldier Svejk : The Power Elite

Most popular humor pages:

Manifest of the Softpanorama IT Slacker Society : Ten Commandments of the IT Slackers Society : Computer Humor Collection : BSD Logo Story : The Cuckoo's Egg : IT Slang : C++ Humor : ARE YOU A BBS ADDICT? : The Perl Purity Test : Object oriented programmers of all nations : Financial Humor : Financial Humor Bulletin, 2008 : Financial Humor Bulletin, 2010 : The Most Comprehensive Collection of Editor-related Humor : Programming Language Humor : Goldman Sachs related humor : Greenspan humor : C Humor : Scripting Humor : Real Programmers Humor : Web Humor : GPL-related Humor : OFM Humor : Politically Incorrect Humor : IDS Humor : "Linux Sucks" Humor : Russian Musical Humor : Best Russian Programmer Humor : Microsoft plans to buy Catholic Church : Richard Stallman Related Humor : Admin Humor : Perl-related Humor : Linus Torvalds Related humor : PseudoScience Related Humor : Networking Humor : Shell Humor : Financial Humor Bulletin, 2011 : Financial Humor Bulletin, 2012 : Financial Humor Bulletin, 2013 : Java Humor : Software Engineering Humor : Sun Solaris Related Humor : Education Humor : IBM Humor : Assembler-related Humor : VIM Humor : Computer Viruses Humor : Bright tomorrow is rescheduled to a day after tomorrow : Classic Computer Humor

The Last but not Least Technology is dominated by two types of people: those who understand what they do not manage and those who manage what they do not understand ~Archibald Putt. Ph.D

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