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Removing HPOM nodes

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The HP recommended way to delete a node in HPOM:

When using command ./ -r to remove agent make sure that you on the target node not on HPOM server. Otherwise you inflict of yourself a lot of troubles

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Old News ;-)

[Feb 03, 2012] How to delete the nodes no longer used from the HPOM Database.

Old, use with caution

Here is the procedure:

The correct and HP supported way for deleting a node from within ITO is as follows:

  1. Modify all templates that reference the node that will be deleted.
  2. Delete applications that reference the node that will be deleted.
  3. Acknowledge all messages for the node that will be deleted.

    Note: When deleting this node, also acknowledge the messages, but only if the messages are not matched by an

    external node.

  4. Use the GUI to delete the node.
  5. Perform a history download:
    /opt/OV/bin/OpC/opchistdwn -older 0s -file 
  6. Call the 'opcdbidx' utility to remove unused opc_node_names entries:
    /opt/OV/bin/OpC/opcdbidx -orphan
    Check to see if the 'opc_node_names' entry still exists. If the 'opc_node_names' entry does not exist:

A. Add the node again.

B. Repeat procedure.

C. Check for applications and templates.

Here is a list of the tables that could still contain entries for deleted nodes (Verify the accuracy of the table names in "Reporting and Database Schema " and/or "Database Entity Relationship Diagrams" before proceeding!) :

Below is how one would go about the SQL statements if the entries were to be removed manually.

This is an unsupported procedure, back up the Database as inconsistencies can result from these statements!

Please talk with a DBA before proceeding!




In this example, the node "" will manually be removed from the DB:




SQL> select node_id,node_name from opc_op.opc_node_names

2 where node_name ='';







2-DELETE the references from the tables :


SQL> delete from opc_op.opc_node_names

2 where node_id like 'd0d51180-6965-71d4-172b-0f11bb100000'

3 ;

1 row deleted.

SQL> delete from opc_op.opc_nodehier_layout

2 where node_id like 'd0d51180-6965-71d4-172b-0f11bb100000'

3 ;

2 rows deleted.


SQL> delete from opc_op.opc_nodes

2 where node_id like 'd0d51180-6965-71d4-172b-0f11bb100000'

3 ;

1 row deleted.


SQL> delete from opc_op.opc_nodes_in_group

2 where node_id like 'd0d51180-6965-71d4-172b-0f11bb100000'

3 ;

0 rows deleted.

SQL> delete from opc_op.opc_node_config

2 where node_id like 'd0d51180-6965-71d4-172b-0f11bb100000'

3 ;

0 rows deleted.




In this example, the node "node_name1" will be removed from the DB:




select node_id,node_name from opc_op.opc_node_names

where node_name like 'node_name1%';

delete from opc_op.opc_node_names where node_id like


delete from opc_op.opc_nodehier_layout where node_id like


delete from opc_op.opc_nodes where node_id like


delete from opc_op.opc_nodes_in_group where node_id like


delete from opc_op.opc_node_config where node_id like





SQL*Plus: Release - Production on Wed Jun 6 14:55:40 2001

(c) Copyright 1998 Oracle Corporation. All rights reserved.

Connected to:

Oracle8 Enterprise Edition Release - Production

With the Partitioning and Objects options

PL/SQL Release - Production

SQL> select node_id,node_name from opc_op.opc_node_names

2 where node_name like 'node_name1%';







SQL> delete from opc_op.opc_node_names where node_id like



1 row deleted.

SQL> delete from opc_op.opc_nodehier_layout where node_id like



2 rows deleted.

SQL> delete from opc_op.opc_nodes where node_id like



1 row deleted.

SQL> delete from opc_op.opc_nodes_in_group where node_id like



0 rows deleted.

SQL> delete from opc_op.opc_node_config where node_id like



0 rows deleted.


[Feb 02, 2012] Removal of node from HPOM

Today, I am going to post how to remove a node from HPOM monitoring

A. On Managed node
1. If PATH environment variable is not set, navigate to below path


2. Execute manual removal command

#./ -r   

3. Once removed, you can delete the HP OpenView directory, if needed.

B. On Management server

1. Acknowledge all active messages related to the node either by Java or Motif GUI.
You can also use command to acknowledge

opcack -s
Input will be prompted against number of options like severity, application, object, node name. You can give node name against node name/server name option.

It will prompt for confirmation. Once confirmed, it will acknowledge all the active messages related to that node and will synchronise all running GUIs.

Note: Acknowledgement may take few minutes, depending upon number of messages to be acknowledged.

2. Download all history messages related to the node.

opchistdwn -older 0s -node node_name -file file_name
where 0s denoting zero seconds, < node name > is the name of node, < file name > is the name of the file with path, where downloaded messages need to be kept.

3. Remove the node from HPOM database

opcnode -del_node node_name=node_name  net_type=NETWORK_IP

4. If node is present if /etc/hosts you can either comment the node out or delete the corresponding line.

IT Resource Center forums - Changed Node Names - This thread has been closed



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