How to monitor -MGMTDB CDB/PDB in OEM 12c
edited Nov 7, 2017 8:46AM in Managing Databases using Enterprise Manager (MOSC) 7 commentsAnswered ✓
The instance -MGMTDB (GIMR database, mandatory in 2.1.0.2) only runs on one node of a cluster (the active node when one fails).
It is a single tenant pluggable DB with one Container (CDB) and Pluggable tenant (PDB) associated with it.
The instance moves from one node to the other when the active node fails or by using srvctl commands.
Some interesting examples:
http://askdba.org/weblog/2013/07/mgmtdb-grid-infrastructure-management-repository/
The problem is that the target configuration for it in OEM specifies the active host. When the active host fails and the MGMTDB instance switches to the NEW active host, the target is shown as being DOWN in OEM.
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