Metric evaluation error start – Get dynamic property error,Dynamic Category property error,Computation of a critical dynamic property failed. Retries Completed.

Hi all,
Getting this error? OMS 12.1.0.3?
Ok… After an investigation on MOS and also a SR opened with Oracle is was pointed to relation with Bug 17575631 CLUSTER DB HOME PAGE ERRORS- REGIONS FETCH REAL TIME DATA WILL NOT BE DISPLAYED on Database Plugin.
It’s solved in OMS 12.1.0.4 and also in 12.1.0.5.1 EM Database Plugin Bundle patch.

 I’ll show you how to workaround it. 🙂

Before, I’d recommend you reading those MOS Documents:
EM 12c: Enterprise Manager 12.1.0.3 Cloud Control Metric Collection Error: Metric Evaluation – Error Start – Dynamic Category Property Error (Doc ID 1594696.1)
EM 12c: Targets Are Showing Pending Status After Discovery (Doc ID 1617162.1)
Database instance target status at ‘Metric Collection Error’ in Enterprise Manager Cloud Control 12.1.0.2 (Doc ID 1519711.1)

Ok, but how can I workaround this error for a while?
Hmmm!

You can clear the error by:
– Stop and start the agent
– List targets on the host
– Reload dynamic proeprties for problematic target from above list

Example of Error from OEM:

 Host=dbserver.domain.com
 Target type=Cluster Database
 Target name=proddb
 Categories=Availability
 Message=Metric evaluation error start - Get dynamic property error,Dynamic Category property error,Computation of a critical dynamic property failed. Retries Completed.
 Severity=Critical
 Event reported time=Mar 9, 2017 1:26:29 PM PST
 Target Lifecycle Status=Production
 Line of Business=Exadata
 Location=MyDC
 Operating System=Linux
 Platform=x86_64
 Associated Incident Id=65566
 Associated Incident Status=New
 Associated Incident Owner= 
 Associated Incident Acknowledged By Owner=No
 Associated Incident Priority=None
 Associated Incident Escalation Level=0
 Event Type=Target Availability
 Event name=Status
 Availability status=Availability Evaluation Error
 Rule Name=******
 Rule Owner=SYSMAN

Example of Solving:

[oracle@dbserver ~]$ emctl stop agent
Oracle Enterprise Manager Cloud Control 12c Release 3  
Copyright (c) 1996, 2013 Oracle Corporation.  All rights reserved.
Stopping agent ..... stopped.
[oracle@dbserver ~]$ emctl clearstate agent
Oracle Enterprise Manager Cloud Control 12c Release 3  
Copyright (c) 1996, 2013 Oracle Corporation.  All rights reserved.
EMD clearstate completed successfully
[oracle@dbserver ~]$ emctl start agent
Oracle Enterprise Manager Cloud Control 12c Release 3  
Copyright (c) 1996, 2013 Oracle Corporation.  All rights reserved.
Starting agent ................. started.
[oracle@dbserver ~]$ emctl upload agent
Oracle Enterprise Manager Cloud Control 12c Release 3  
Copyright (c) 1996, 2013 Oracle Corporation.  All rights reserved.
---------------------------------------------------------------
EMD upload completed successfully
[oracle@dbserver ~]$ emctl config agent listtargets
Oracle Enterprise Manager Cloud Control 12c Release 3  
Copyright (c) 1996, 2013 Oracle Corporation.  All rights reserved.
[dbserver.domain.com, host]
[dbserver.domain.com:3872, oracle_emd]
[dbserver-ilom.domain.com, oracle_exa_ilom]
[dbserver-ilom.domain.com, oracle_exa_ilom]
[dbserver-pdub.domain.com, oracle_exa_pdu]
[dbserver-pdua0.domain.com, oracle_exa_pdu]
[dbserver.domain.com, oracle_exadata]
[dbserver.domain.com, oracle_exadata]
[dbserver.domain.com, oracle_exadata]
[dbserver.domain.com, oracle_exadata]
[Ora11g_gridinfrahome2_1_dbserver, oracle_home]
[dbserver-ibb0.domain.com, oracle_ibswitch]
[dbserver-ibs0.domain.com, oracle_ibswitch]
[agent12c1_4_dbserver, oracle_home]
[oraproddb_Home_2_dbserver, oracle_home]
[oraentsp_Home_3_dbserver, oracle_home]
[LISTENER_dbserver.domain.com, oracle_listener]
[+ASM3_dbserver.domain.com, osm_instance]
[has_dbserver.domain.com, has]
[proddb_proddb1, oracle_database]
[proddb, rac_database]
[dbserver-cluster, cluster]
[LISTENER_SCAN2_dbserver-cluster, oracle_listener]
[proddb_proddb1, oracle_database]
[proddb, rac_database]
[oracle@dbserver ~]$ emctl reload agent dynamicproperties proddb:rac_database
Oracle Enterprise Manager Cloud Control 12c Release 3  
Copyright (c) 1996, 2013 Oracle Corporation.  All rights reserved.
---------------------------------------------------------------
EMD recompute dynprops completed successfully
[oracle@dbserver ~]$

Nice, right?

See you next week!

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