Thinking Out Loud

July 15, 2019

Delete MGMTDB and MGMTLSNR from OEM using emcli

Filed under: emcli — mdinh @ 11:22 pm

Doc ID 1933649.1, MGMTDB and MGMTLSNR should not be monitored.

$ grep oms /etc/oratab 
oms:/u01/middleware/13.2.0:N

$ . oraenv <<< oms

$ emcli login -username=SYSMAN
Enter password : 
Login successful

$ emcli sync
Synchronized successfully

$ emcli get_targets -targets=oracle_listener -format=name:csv|grep -i MGMT
1,Up,oracle_listener,MGMTLSNR_host01

$ emcli delete_target -name="MGMTLSNR_host01" -type="oracle_listener" 
Target "MGMTLSNR_host01:oracle_listener" deleted successfully

$ emcli sync
$ emcli get_targets|grep -i MGMT

Note: MGMTDB was not monitored and can be deleted as follow:

$ emcli get_targets -targets=oracle_database -format=name:csv|grep -i MGMT
$ emcli delete_target -name="MGMTDB_host01" -type="oracle_database" 

The problem with monitoring MGMTDB and MGMTLSNR is getting silly page when they are relocated to a new host.

Host=host01
Target type=Listener 
Target name=MGMTLSNR_host01
Categories=Availability 
Message=The listener is down:

Dealing with the same issue for scan listener and have not reached an agreement to have them deleted as I and a few others think they should not be monitored.
Unfortunately, there is no official Oracle documentation for this.

Here’s a typical page for when all scan listeners are running from only one node.

Host=host01
Target type=Listener
Target name=LISTENER_SCAN2_cluster
Categories=Availability
Message=The listener is down: 

$ srvctl status scan_listener
SCAN Listener LISTENER_SCAN1 is enabled
SCAN listener LISTENER_SCAN1 is running on node node02
SCAN Listener LISTENER_SCAN2 is enabled
SCAN listener LISTENER_SCAN2 is running on node node02
SCAN Listener LISTENER_SCAN3 is enabled
SCAN listener LISTENER_SCAN3 is running on node node02
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