Have you received this error on OMS 12.1.0.3? "Metric evaluation error start – Get dynamic property error," After performing some research on MOS and a confirmation SR, it seems related to 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. However, MOS doesn't have any quick fixes to avoid alarms, so I'll show you how to work around it. Before we begin, I recommend you read those MOS documents:
To work around it temporarily, you can: – Stop and start the agent. – List targets on the host. – Reload dynamic properties for problematic target from the above list. Check out the example below: Example of an 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=Aug 9, 2019 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 ~]$
Hope this helps.
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