DevOps, CI/CD and Automation

Hi,

I had the same problem - and still have.

Have a look at
http://www.dbazine.com/blogs/blog-cf/chrisfoot/10goemlessons
http://www.dbazine.com/blogs/blog-cf/chrisfoot/blogentry.2005-09-17.7657940139
https://metalink.oracle.com/metalink/plsql/ml2_documents.showDocument?p_database_id=NOT&p_id=290527.1 (Password required).

Since you're running not the newest Grid Control you are not able to re-incarnate a used agent! Unfortunately I have no idea which tables hold information about the old agent.

I solved the problem by using a host-alias - all occurrences of $HOSTNAME in emd.properties and targets.xml are substituted by $HOSTALIAS.

It's an ugly hack - but it works in my environment (Agent: AIX, Oracle 9i; OEMS: SLES 9, Oracle 9i).

I hope it helps you, too.

Best regards

Andreas

I posted this before, its easy enough to do ..

As sysman,

begin
mgmt_admin.cleanup_agent('<hostname>:1830');
commit;
end;

Run for each target you want to clean out. hostname has to match what it has in the table it might be hostname or fuly quialified host name. It will complain if you got it wrong

Hi Andreas
I use the latest agent and Grid Control (10.2.0.1.0) upgraded from previous release . And I don't know what does "re-incarnate a used agent" means. Can you please tell me how to do it.
Thank you for links. But I can't use them because the articles doesn't solve the problem.
Best regards
Alexander

Hi daryle

I'v got "ORA-20206: Target does not exist" message on mgmt_admin.cleanup_agent. There is no the target in sysman.mgmt_targets, but there is a record in sysman.mgmt_targets_delete without delete_complite_time set.

Best regards
Alexander

Andreas
I'v got why you think, that I use old agent version. It's my fault. I installed agent, then removed and installed again. Both installations were with the same version. So I mean old agent installation, not version
Best regards
Alexander

If its the deleted screen thats fine. This should still work.

Execute
SELECT target_name
FROM sysman.MGMT_TARGETS
where target_type = 'oracle_emd'

It has to be in that table for it to work.
You should see something like:
hostname.my.domain.net:1830

Then execute
mgmt_admin.cleanup_agent('hostname.my.domain.net:1830');
commit;

find the TARGET_GUID in MGMT_TARGET_DELETE for the agent you are trying to delete, make sure the delete completion timestamp is set (or delete the row), then delete the TARGET_GUID from MGMT_EMD_PING and MGMT_EMD_PING_CHECK.

My problem is solved. I open a TAR on Metalink and was advised to run mgmt_admin.delete_target_internal(<target_name>, <target_type>) for each target without delete_complete_time set.
Thank you all for help

Help me
I use 10.2

==> emoms.trc <==
2006-03-31 13:17:46,732 [MetadataLoad https://npmdb1:3872/emd/main:A0000000033.xml] ERROR eml.XMLLoader markFileAsError.846 - Error repeated 30 times: FATAL_ERROR::500|ORA-20618: The specified agent is in the process of being deleted from the repository, wait for deletion to complete before restarting the agent.(agent name = npmdb1:3872)(agent guid = CE6B5C2E232766E01D3803EB03D70128)
ORA-06512: at "SYSMAN.TARGETS_INSERT_TRIGGER", line 30
ORA-04088: error during execution of trigger 'SYSMAN.TARGETS_INSERT_TRIGGER'


==> emoms.log <==
2006-03-31 13:17:52,088 [MetadataLoad https://npmdb1:3872/emd/main:A0000000034.xml] ERROR eml.XMLLoader markFileAsError.846 - Error repeated 31 times: FATAL_ERROR::500|ORA-20618: The specified agent is in the process of being deleted from the repository, wait for deletion to complete before restarting the agent.(agent name = npmdb1:3872)(agent guid = CE6B5C2E232766E01D3803EB03D70128)
ORA-06512: at "SYSMAN.TARGETS_INSERT_TRIGGER", line 30
ORA-04088: error during execution of trigger 'SYSMAN.TARGETS_INSERT_TRIGGER'




How can i resolve this problem?

Have you followed the above suggestion?

Bazza

I found every tables, that they have "MGMT_*" names and TARGET_GUID be "CE6B5C2E232766E01D3803EB03D70128" , and then i deleted
example
SQL> delete from MGMT_TARGET_ASSOC_INSTANCE where target_guid = HEXTORAW('CE6B5C2E232766E01D3803EB03D70128');
.
.
.


And I uploaded xml agent again

[oracle@npmdb1 config]$ /oracle/product/10.2.0/agent10g/bin/emctl clearstate agent
Oracle Enterprise Manager 10g Release 10.2.0.1.0.
Copyright (c) 1996, 2005 Oracle Corporation. All rights reserved.
EMD clearstate completed successfully
[oracle@npmdb1 config]$ /oracle/product/10.2.0/agent10g/bin/emctl start agent
Oracle Enterprise Manager 10g Release 10.2.0.1.0.
Copyright (c) 1996, 2005 Oracle Corporation. All rights reserved.
Starting agent ........ started.
[oracle@npmdb1 config]$ /oracle/product/10.2.0/agent10g/bin/emctl upload
Oracle Enterprise Manager 10g Release 10.2.0.1.0.
Copyright (c) 1996, 2005 Oracle Corporation. All rights reserved.
---------------------------------------------------------------
EMD upload completed successfully

Could you please provide the exact syntax for this please ?

Thanks

Also if you are getting an error like this :

ORA_20618

You can try this to delete the agent.

SQL> SELECT TABLE_NAME FROM DBA_TAB_COLUMNS WHERE COLUMN_NAME='AGENT_GUID';
MGMT_MASTER_AGENT
MGMT_TARGET_AGENT_ASSOC
MGMT_METRIC_ERRORS
MGMT_CURRENT_METRIC_ERRORS
MGMT_UPDATE_OPERATIONS_DETAILS

SQL> SELECT AGENT_GUID FROM MGMT_MASTER_AGENT;
2D71E48814F4A66943AD8EF7312D0842
2D71E48814F4A66943AD8EF7312D0842
3FADF0B85DE351CDB45FEF1E5BCE705C
3FADF0B85DE351CDB45FEF1E5BCE705C
2D71E48814F4A66943AD8EF7312D0842
2D71E48814F4A66943AD8EF7312D0842
3FADF0B85DE351CDB45FEF1E5BCE705C
588F807405A4CEF6C8D4EDCCD8210952
2D71E48814F4A66943AD8EF7312D0842
2D71E48814F4A66943AD8EF7312D0842
2D71E48814F4A66943AD8EF7312D0842
2D71E48814F4A66943AD8EF7312D0842
3FADF0B85DE351CDB45FEF1E5BCE705C
3FADF0B85DE351CDB45FEF1E5BCE705C
3FADF0B85DE351CDB45FEF1E5BCE705C
SQL> DELETE FROM MGMT_TARGET_AGENT_ASSOC WHERE AGENT_GUID=HEXTORAW('2D71E48814F4A66943AD8EF7312D0842');

3 rows deleted.

SQL> DELETE FROM MGMT_METRIC_ERRORS WHERE AGENT_GUID=HEXTORAW('2D71E48814F4A66943AD8EF7312D0842');

49 rows deleted.

SQL> DELETE FROM MGMT_CURRENT_METRIC_ERRORS WHERE AGENT_GUID=HEXTORAW('2D71E48814F4A66943AD8EF7312D0842');

11 rows deleted.

SQL> DELETE FROM MGMT_UPDATE_OPERATIONS_DETAILS WHERE AGENT_GUID=HEXTORAW('2D71E48814F4A66943AD8EF7312D0842');

0 rows deleted.

SQL> COMMIT;

Commit complete.

SQL>


This worked for me. The trick was to read the emagent.trc file and look at the error reported. It said agent_guid not target_guid.

Thanks
-Marc

You can try this to delete the agent.

SQL> SELECT TABLE_NAME FROM DBA_TAB_COLUMNS WHERE COLUMN_NAME='AGENT_GUID';
MGMT_MASTER_AGENT
MGMT_TARGET_AGENT_ASSOC
MGMT_METRIC_ERRORS
MGMT_CURRENT_METRIC_ERRORS
MGMT_UPDATE_OPERATIONS_DETAILS

SQL> SELECT AGENT_GUID FROM MGMT_MASTER_AGENT;
2D71E48814F4A66943AD8EF7312D0842
2D71E48814F4A66943AD8EF7312D0842
3FADF0B85DE351CDB45FEF1E5BCE705C
3FADF0B85DE351CDB45FEF1E5BCE705C
2D71E48814F4A66943AD8EF7312D0842
2D71E48814F4A66943AD8EF7312D0842
3FADF0B85DE351CDB45FEF1E5BCE705C
588F807405A4CEF6C8D4EDCCD8210952
2D71E48814F4A66943AD8EF7312D0842
2D71E48814F4A66943AD8EF7312D0842
2D71E48814F4A66943AD8EF7312D0842
2D71E48814F4A66943AD8EF7312D0842
3FADF0B85DE351CDB45FEF1E5BCE705C
3FADF0B85DE351CDB45FEF1E5BCE705C
3FADF0B85DE351CDB45FEF1E5BCE705C
SQL> DELETE FROM MGMT_TARGET_AGENT_ASSOC WHERE AGENT_GUID=HEXTORAW('2D71E48814F4A66943AD8EF7312D0842');

3 rows deleted.

SQL> DELETE FROM MGMT_METRIC_ERRORS WHERE AGENT_GUID=HEXTORAW('2D71E48814F4A66943AD8EF7312D0842');

49 rows deleted.

SQL> DELETE FROM MGMT_CURRENT_METRIC_ERRORS WHERE AGENT_GUID=HEXTORAW('2D71E48814F4A66943AD8EF7312D0842');

11 rows deleted.

SQL> DELETE FROM MGMT_UPDATE_OPERATIONS_DETAILS WHERE AGENT_GUID=HEXTORAW('2D71E48814F4A66943AD8EF7312D0842');

0 rows deleted.

SQL> COMMIT;

Commit complete.

SQL>

This worked for me. The trick was to read the emagent.trc file and look at the error reported. It said agent_guid not target_guid.

Thanks
-Marc

I had the same issue on 10.2.0.4 OMS and Agents. Found the following error in the emagent.trc file:
FATAL_ERROR::500|ORA-20206: Target does not exist: Agent does not exist for ...

I checked the MGMT_TARGETS_DELETE:
select target_name from MGMT_TARGETS_DELETE ;

And the old targets that I had removed earlier on where still there. I tried to remove them with
mgmt_admin.delete_target_internal(<target_name>, <target_type>), but I received an error telling me that it
couldn't find the targets.

So, I tried deleting the rows in MGMT_TARGETS_DELETE as SYSMAN:

1. Backed up the table:
SQL> create table MGMT_TARGETS_DELETE_backup as select * from MGMT_TARGETS_DELETE;

Table created.

2. Deleted the rows:
SQL> delete MGMT_TARGETS_DELETE ;

12 rows deleted.

SQL> commit;

Commit complete.

3. Started the agent again on the remote host... and it finally worked fine.

Hope this helps.