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EM 12c: Database System Targets showing Metric Collection Error in Enterprise Manager 12c Cloud Control and have no Members (Doc ID 1678729.1)

Last updated on FEBRUARY 21, 2020

Applies to:

Enterprise Manager for Oracle Database - Version and later
Information in this document applies to any platform.


Database System targets (oracle_dbsys) are reporting Metric Collection Error in the Enterprise Manager (EM) 12c Cloud Control console with no further error information.  The Database Systems with the issue, have no members and their associated Database Instance targets are missing a database system target. 

The Database System targets should have the Database Instance and Listener targets as it's members and there should be no Metric Collection Error.

See note for further information on Database System targets: Understanding the Database System (oracle_dbsys) Target in Enterprise Manager 12c Cloud Control (Doc ID 1543605.1)

Alternatively, if you find the Database System targets with the Metric Collection Error and no associated Database Instance target then you can delete the Database System target using the emcli (EM Command Line Interface) in the solution below.

For empty database systems which are related to a Standby database target see <Note:1954912.1> "Database System Target in Metric Collection Error or Blackout Status for Standby Database", for an explanation of this behaviour.






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