Use OEM 13c R2 to Discover Oracle BDA

OEM 13c Cloud Control is a powerful monitoring tool, not only for Exadata and Oracle database, but also for Oracle Big Data Appliance (BDA). There are many articles or blogs about Exadata Discovery using OEM 12c or 13c. But not many places discuss the OEM BDA Discovery, especially using the new version of OEM, 13c Cloud Control. In this blog, I am going to discuss the steps to discover BDA using OEM 13c R2.

First, do not use OEM 13c R1 for BDA Discovery. It is very time consuming and very likely not going to work. OEM 13c R2 is much better, at least I can successfully do the BDA Discovery on all of the BDAs I have worked on.

Secondly, unlike OEM Exadata Discovery, BDA Discovery usually requires one extra step before the Manual OEM BDA Discovery by using bdacli enable em command first. Theoretically if works, I don’t need to do anything in manual BDA discovery process. Unfortunately I have never run into this perfect situation in different BDA environment and always get certain kind of errors at the end.

Preparation
There are a few useful notes about OEM BDA Discovery.
1) Instructions to Install 12.1.0.4 BDA Plug-in on Oracle Big Data Appliance (BDA) V2.*/V3.0.*/V3.1/V4.* (Doc ID 1682558.1)
2) BDA Credentials for Enterprise Manager 13.x Plugin (Doc ID 2206111.1)
3) Instructions to Enable / Disable the 13.x BDA Enterprise Manager Plug-in on Oracle Big Data Appliance (BDA) V4.5-V4.7 (Doc ID 2206207.1)

Execute bdacli command
Run bdacli enable em. For BDA version below 4.5, run command bdacli enable em –force. I am almost 100% guarantee you won’t see the successful completion message from this command. For example, get the following error at the end.

INFO: Running: /opt/oracle/emcli_home/emcli discover_bda_cluster -hostname=enkx4bda1node01.enkitec.local -cloudera_credential=BDA_ENKX4BDA_CM_CRED -host_credential=BDA_ENKX4BDA_HOSTS_CRED -cisco_credential=BDA_ENKX4BDA_CISCO_CRED -ilom_credential=BDA_ENKX4BDA_ILOM_CRED -infiniband_credential=BDA_ENKX4BDA_IB_CRED -pdu_credential=BDA_ENKX4BDA_PDU_CRED -cisco_snmp_string="snmp_v3;;SNMPV3Creds;authUser:none;authPwd:none;authProtocol:none;privPwd:none" -pdu_snmp_string="snmp_v1v2_v3;;SNMPV1Creds;COMMUNITY:none" -switch_snmp_string="snmp_v1v2_v3;;SNMPV3Creds;authUser:none;authPwd:none;authProtocol:none;privPwd:none"
ERROR: Syntax Error: Unrecognized argument -cisco_snmp_string #Step Syntax Error: Unrecognized argument -pdu_snmp_string#
Are you sure you want to completely cleanup em and lose all related state ?

When see the above message, always type in N and not rollback the changes. Basically you have OEM agent deployed, just need to figure out which node you want to use as the start point for Manual OEM BDA Discovery.

On each node, run the following command:

[root@enkx4bda1node06 ~]# java -classpath /opt/oracle/EMAgent/agent_13.2.0.0.0/jlib/*:/opt/oracle/EMAgent/agent_13.2.0.0.0/plugins/oracle.sysman.bda.discovery.plugin_13.2.2.0.0/archives/* oracle.sysman.bda.discovery.pojo.GetHadoopClusters http://enkx4bda1node03.enkitec.local:7180/api/v1/clusters admin admin_password

You should see the error below for the execution on many nodes.

Apr 10, 2017 10:14:44 AM com.sun.jersey.api.client.ClientResponse getEntity
SEVERE: A message body reader for Java class [Loracle.sysman.bda.discovery.pojo.Items;, and Java type class [Loracle.sysman.bda.discovery.pojo.Items;, and MIME media type text/html was not found
Apr 10, 2017 10:14:44 AM com.sun.jersey.api.client.ClientResponse getEntity
SEVERE: The registered message body readers compatible with the MIME media type are:
*/* ->
  com.sun.jersey.core.impl.provider.entity.FormProvider
  com.sun.jersey.core.impl.provider.entity.MimeMultipartProvider
  com.sun.jersey.core.impl.provider.entity.StringProvider
  com.sun.jersey.core.impl.provider.entity.ByteArrayProvider
  com.sun.jersey.core.impl.provider.entity.FileProvider
  com.sun.jersey.core.impl.provider.entity.InputStreamProvider
  com.sun.jersey.core.impl.provider.entity.DataSourceProvider
  com.sun.jersey.core.impl.provider.entity.XMLJAXBElementProvider$General
  com.sun.jersey.core.impl.provider.entity.ReaderProvider
  com.sun.jersey.core.impl.provider.entity.DocumentProvider
  com.sun.jersey.core.impl.provider.entity.SourceProvider$StreamSourceReader
  com.sun.jersey.core.impl.provider.entity.SourceProvider$SAXSourceReader
  com.sun.jersey.core.impl.provider.entity.SourceProvider$DOMSourceReader
  com.sun.jersey.core.impl.provider.entity.XMLRootElementProvider$General
  com.sun.jersey.core.impl.provider.entity.XMLListElementProvider$General
  com.sun.jersey.core.impl.provider.entity.XMLRootObjectProvider$General
  com.sun.jersey.core.impl.provider.entity.EntityHolderReader

For certain node, you could see successful message and showing below.

enkx4bda;;

In my case, it is node 2. So I will use Node 2 for my manual BDA Discovery in the following steps.

Manual OEM BDA Discovery
Logon to OEM as sysman user. Select Add Target -> Add Target Manually.

Select Add Targets Using Guided Process

Select Oracle Big Data Appliance

The Add Targets Manually pages shows up. Select node2 from the list. Click Next.

After it completes, it will show the following hardware information. Click Next.

The Hardware Credentials screen shows up. If all Host credentials show green sign, you don’t need to do anything related to Host. Go to the next one, for example, IB Switch. Select Set Credentials -> All Infiniband Switches . Then set SNMP Credentials type and community string. Majority of the time, input public for community string. Then click OK.

If successful, it shows the green check.

Following the similar procedure for all other hardware components, like ILOM, PDU and Cisco Switch. At the end, you should see the following screen.
One interesting note about PDU. PDU component always behave in a weird way during the discovery. For this case, it shows successful with green check, but later on OEM shows PDUs as DOWN status after the discovery. In my other discovery works for different BDA environments, the green check has never shown up in this page, but PDUs shows UP status after the discovery. So the result is inconsistent.

Click Next. The screen for Cloudera Manager shows up. Click Edit, verify the credential for admin user for Cloudera Manager. Then click Next.

The Software page shows up, click Next.

The review page shows up, click Submit

If successful, will see the screen message below, click OK.

The BDA Discovery is completed.
.
You might notice the new BDA cluster is called BDA Network1. This is not a good way to name a cluster, especially you have multiple BDAs under the management from the same OEM. I don’t understand why not to use BDA’s cluster name or Cloudera Manager’s cluster name. Either one will be much better than this naming. Even worse, you can change a lot of target name in OEM, but not for this one. I have another blog (Change BDA Cluster Name in OEM Cloud Control 13c) discussing a partial workaround for this issue.

To view the detail of a host target, you can have the following:

The presentation looks better than OEM 12c. In general, OEM 13c for BDA is good one. But pay attention to the followings. Otherwise you will spend a lot of additional time.
1) Before performing OEM BDA Discovery, make sure you have changed all of your default passwords on BDA. It’s easier to use default password during the discovery, but a huge pain after you change passwords for certain user accounts used in BDA discovery. Basically, update the Named Credentials is not enough and you have to delete the whole BDA target in OEM and redo the discovery.

2) Similarly, if configure TLS with Cloudera Manager after BDA Discovery, you will have to remove the BDA target and redo the discovery. It is a clearly a bug in OEM, at least not fixed at the time I am writing this blog.

3) Sometimes you might see tons of alerts from almost every ports in the Cisco switch. If from a few ports, I might believe it. But for almost every port, there is no way this is the right alert. As matter of fact, Oracle Support confirmed it seem false alert. At the time I had to do the BDA Rediscovery after configuring TLS with Cloudera Manager, I happened to notice all Cisco port alerts were gone after BDA rediscovery.

4) Both Oracle document and Oracle support says OEM 13c R2 supports BDA v4.5+ and any version below it is not supported. It’s true the lower BDA version would run into additional issues, but I managed to find workaround and make it working for BDA v4.3.

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Change BDA Cluster Name in OEM Cloud Control 13c

Oracle OEM Cloud Control 13c has some improvement than OEM 12c. But for BDA, the most weird thing after OEM BDA Discovery is the target name for BDA cluster. By default, the target name is called BDA Network 1 for the first BDA cluster, and BDA Network 2 for 2nd BDA cluster. Think about this way, Oracle BDA already has a different BDA cluster name than Cloudera Manager’s cluster name. Right now OEM comes out with another different cluster name. If we have two BDAs and use OEM 13c to discover the DR BDA first, the DR BDA will take BDA Network 1 name. Then primary BDA will be discovered as BDA Network 2. It’s really an annoying new feature in OEM 13c. Ideally, I want to change the BDA Network Name to something meaningful. BDA Network 1 is really an useless naming standard, just like the door below. Mapping to either BDA cluster name or Cloudera Manager’s Cluster name is fine with me. In this blog, I am going to discuss whether I can change this name to something I like.

There are two types of targets in OEM: Repository Side Targets and Agent Side Targets. Each managed target in OEM have a Display Name and Target Name. So for BDA Network, I am wondering which category is for this target.

Run the query for Repository Side targets:

set lines 200
set pages 999
col ENTITY_TYPE for a30
col TYPE_DISPLAY_NAME for a35
col ENTITY_NAME for a45
col DISPLAY_NAME for a40

SELECT ENTITY_TYPE,
       TYPE_DISPLAY_NAME,
       ENTITY_NAME,
       DISPLAY_NAME
FROM   SYSMAN.EM_MANAGEABLE_ENTITIES
WHERE  MANAGE_STATUS = 2
AND    REP_SIDE_AVAIL = 1
ORDER  BY 1,2;
ENTITY_TYPE		       TYPE_DISPLAY_NAME		   ENTITY_NAME					 DISPLAY_NAME
------------------------------ ----------------------------------- --------------------------------------------- ----------------------------------------
j2ee_application_cluster       Clustered Application Deployment    /EMGC_GCDomain/GCDomain/BIP_cluster/bipublish bipublisher(11.1.1)
								  er(11.1.1)

j2ee_application_cluster       Clustered Application Deployment    /EMGC_GCDomain/GCDomain/BIP_cluster/ESSAPP	 ESSAPP
oracle_em_service	       EM Service			   EM Jobs Service				 EM Jobs Service
oracle_emsvrs_sys	       EM Servers System		   Management_Servers				 Management Servers
oracle_si_netswitch	       Systems Infrastructure Switch	   enkx4bda1sw-ib2				 enkx4bda1sw-ib2
oracle_si_netswitch	       Systems Infrastructure Switch	   enkx4bda1sw-ip				 enkx4bda1sw-ip
oracle_si_netswitch	       Systems Infrastructure Switch	   enkx4bda1sw-ib3				 enkx4bda1sw-ib3
oracle_si_server_map	       Systems Infrastructure Server	   enkbda1node08-ilom				 enkbda1node08-ilom
oracle_si_server_map	       Systems Infrastructure Server	   enkx4bda1node06-ilom 			 enkx4bda1node06-ilom
oracle_si_server_map	       Systems Infrastructure Server	   enkbda1node17-ilom				 enkbda1node17-ilom
oracle_si_server_map	       Systems Infrastructure Server	   enkbda1node11-ilom				 enkbda1node11-ilom
oracle_si_server_map	       Systems Infrastructure Server	   enkx4bda1node04.enkitec.local/server 	 enkx4bda1node04.enkitec.local/server
oracle_si_server_map	       Systems Infrastructure Server	   enkbda1node18-ilom				 enkbda1node18-ilom
oracle_si_server_map	       Systems Infrastructure Server	   enkx4bda1node05-ilom 			 enkx4bda1node05-ilom
oracle_si_server_map	       Systems Infrastructure Server	   enkbda1node15-ilom				 enkbda1node15-ilom
oracle_si_server_map	       Systems Infrastructure Server	   enkbda1node14-ilom				 enkbda1node14-ilom
oracle_si_server_map	       Systems Infrastructure Server	   enkbda1node02-ilom				 enkbda1node02-ilom
oracle_si_server_map	       Systems Infrastructure Server	   enkbda1node01-ilom				 enkbda1node01-ilom
oracle_si_server_map	       Systems Infrastructure Server	   enkbda1node13-ilom				 enkbda1node13-ilom
oracle_si_server_map	       Systems Infrastructure Server	   enkbda1node06-ilom				 enkbda1node06-ilom
oracle_si_server_map	       Systems Infrastructure Server	   enkbda1node09-ilom				 enkbda1node09-ilom
oracle_si_server_map	       Systems Infrastructure Server	   enkx4bda1node03-ilom 			 enkx4bda1node03-ilom
oracle_si_server_map	       Systems Infrastructure Server	   enkbda1node16-ilom				 enkbda1node16-ilom
oracle_si_server_map	       Systems Infrastructure Server	   enkbda1node03-ilom				 enkbda1node03-ilom
oracle_si_server_map	       Systems Infrastructure Server	   enkbda1node10-ilom				 enkbda1node10-ilom
oracle_si_server_map	       Systems Infrastructure Server	   enkx4bda1node01-ilom 			 enkx4bda1node01-ilom
oracle_si_server_map	       Systems Infrastructure Server	   enkbda1node04-ilom				 enkbda1node04-ilom
oracle_si_server_map	       Systems Infrastructure Server	   enkbda1node05-ilom				 enkbda1node05-ilom
oracle_si_server_map	       Systems Infrastructure Server	   enkbda1node12-ilom				 enkbda1node12-ilom
oracle_si_server_map	       Systems Infrastructure Server	   enkx4bda1node02-ilom 			 enkx4bda1node02-ilom
weblogic_cluster	       Oracle WebLogic Cluster		   /EMGC_GCDomain/GCDomain/BIP_cluster		 BIP_cluster

31 rows selected.

Not found in this category. Try Agent Side target.

set lines 200
set pages 999
col ENTITY_TYPE for a30
col TYPE_DISPLAY_NAME for a30
col ENTITY_NAME for a35
col DISPLAY_NAME for a35
col EMD_URL for a60

SELECT ENTITY_TYPE,
       TYPE_DISPLAY_NAME,
       ENTITY_NAME,
       DISPLAY_NAME,
       EMD_URL
FROM   SYSMAN.EM_MANAGEABLE_ENTITIES
WHERE  MANAGE_STATUS = 2
AND    REP_SIDE_AVAIL = 0
AND    EMD_URL IS NOT NULL
ORDER  BY 1,2,3;

ENTITY_TYPE		       TYPE_DISPLAY_NAME	      ENTITY_NAME			  DISPLAY_NAME			      EMD_URL
------------------------------ ------------------------------ ----------------------------------- ----------------------------------- ------------------------------------------------------------
host			       Host			      enkx4bda1node01.enkitec.local	  enkx4bda1node01.enkitec.local       https://enkx4bda1node01.enkitec.local:1830/emd/main/
host			       Host			      enkx4bda1node02.enkitec.local	  enkx4bda1node02.enkitec.local       https://enkx4bda1node02.enkitec.local:1830/emd/main/
host			       Host			      enkx4bda1node03.enkitec.local	  enkx4bda1node03.enkitec.local       https://enkx4bda1node03.enkitec.local:1830/emd/main/
host			       Host			      enkx4bda1node04.enkitec.local	  enkx4bda1node04.enkitec.local       https://enkx4bda1node04.enkitec.local:1830/emd/main/
host			       Host			      enkx4bda1node05.enkitec.local	  enkx4bda1node05.enkitec.local       https://enkx4bda1node05.enkitec.local:1830/emd/main/
host			       Host			      enkx4bda1node06.enkitec.local	  enkx4bda1node06.enkitec.local       https://enkx4bda1node06.enkitec.local:1830/emd/main/
host			       Host			      enkx4bdacli02.enkitec.local	  enkx4bdacli02.enkitec.local	      https://enkx4bdacli02.enkitec.local:3872/emd/main/
oracle_apache		       Oracle HTTP Server	      /EMGC_GCDomain/GCDomain/ohs1	  ohs1				      https://enkx4bdacli02.enkitec.local:3872/emd/main/
oracle_bda_cluster	       BDA Network		      BDA Network 1			  BDA Network 1 		      https://enkx4bda1node02.enkitec.local:1830/emd/main/
oracle_beacon		       Beacon			      EM Management Beacon		  EM Management Beacon		      https://enkx4bdacli02.enkitec.local:3872/emd/main/
oracle_big_data_sql	       Oracle Big Data SQL	      bigdatasql_enkx4bda		  bigdatasql_enkx4bda		      https://enkx4bda1node01.enkitec.local:1830/emd/main/
oracle_cloudera_manager        Cloudera Manager 	      Cloudera Manager - enkx4bda	  Cloudera Manager - enkx4bda	      https://enkx4bda1node01.enkitec.local:1830/emd/main/
oracle_emd		       Agent			      enkx4bda1node01.enkitec.local:1830  enkx4bda1node01.enkitec.local:1830  https://enkx4bda1node01.enkitec.local:1830/emd/main/
oracle_emd		       Agent			      enkx4bda1node02.enkitec.local:1830  enkx4bda1node02.enkitec.local:1830  https://enkx4bda1node02.enkitec.local:1830/emd/main/
oracle_emd		       Agent			      enkx4bda1node03.enkitec.local:1830  enkx4bda1node03.enkitec.local:1830  https://enkx4bda1node03.enkitec.local:1830/emd/main/
oracle_emd		       Agent			      enkx4bda1node04.enkitec.local:1830  enkx4bda1node04.enkitec.local:1830  https://enkx4bda1node04.enkitec.local:1830/emd/main/
oracle_emd		       Agent			      enkx4bda1node05.enkitec.local:1830  enkx4bda1node05.enkitec.local:1830  https://enkx4bda1node05.enkitec.local:1830/emd/main/
oracle_emd		       Agent			      enkx4bda1node06.enkitec.local:1830  enkx4bda1node06.enkitec.local:1830  https://enkx4bda1node06.enkitec.local:1830/emd/main/
oracle_emd		       Agent			      enkx4bdacli02.enkitec.local:3872	  enkx4bdacli02.enkitec.local:3872    https://enkx4bdacli02.enkitec.local:3872/emd/main/
oracle_emrep		       OMS and Repository	      Management Services and Repository  Management Services and Repository  https://enkx4bdacli02.enkitec.local:3872/emd/main/
oracle_hadoop_cluster	       Hadoop Cluster		      enkx4bda				  enkx4bda			      https://enkx4bda1node01.enkitec.local:1830/emd/main/
oracle_hadoop_datanode	       Hadoop DataNode		      DN_enkx4bda1node01_enkx4bda	  DN_enkx4bda1node01_enkx4bda	      https://enkx4bda1node01.enkitec.local:1830/emd/main/
oracle_hadoop_datanode	       Hadoop DataNode		      DN_enkx4bda1node02_enkx4bda	  DN_enkx4bda1node02_enkx4bda	      https://enkx4bda1node02.enkitec.local:1830/emd/main/
oracle_hadoop_datanode	       Hadoop DataNode		      DN_enkx4bda1node03_enkx4bda	  DN_enkx4bda1node03_enkx4bda	      https://enkx4bda1node03.enkitec.local:1830/emd/main/
oracle_hadoop_datanode	       Hadoop DataNode		      DN_enkx4bda1node04_enkx4bda	  DN_enkx4bda1node04_enkx4bda	      https://enkx4bda1node04.enkitec.local:1830/emd/main/
oracle_hadoop_datanode	       Hadoop DataNode		      DN_enkx4bda1node05_enkx4bda	  DN_enkx4bda1node05_enkx4bda	      https://enkx4bda1node05.enkitec.local:1830/emd/main/
oracle_hadoop_datanode	       Hadoop DataNode		      DN_enkx4bda1node06_enkx4bda	  DN_enkx4bda1node06_enkx4bda	      https://enkx4bda1node06.enkitec.local:1830/emd/main/
oracle_hadoop_failoverctl      Hadoop Failover Controller     FC_NNA_enkx4bda			  FC_NNA_enkx4bda		      https://enkx4bda1node02.enkitec.local:1830/emd/main/
oracle_hadoop_failoverctl      Hadoop Failover Controller     FC_NNB_enkx4bda			  FC_NNB_enkx4bda		      https://enkx4bda1node01.enkitec.local:1830/emd/main/
oracle_hadoop_hdfs	       Hadoop HDFS		      hdfs_enkx4bda			  hdfs_enkx4bda 		      https://enkx4bda1node01.enkitec.local:1830/emd/main/
oracle_hadoop_historyserver    Hadoop Job History Server      JHS_enkx4bda			  JHS_enkx4bda			      https://enkx4bda1node03.enkitec.local:1830/emd/main/
oracle_hadoop_hive	       Hadoop Hive		      hive_enkx4bda			  hive_enkx4bda 		      https://enkx4bda1node01.enkitec.local:1830/emd/main/
oracle_hadoop_hive_metaserver  Hadoop Hive Metastore Server   Metastore_enkx4bda		  Metastore_enkx4bda		      https://enkx4bda1node04.enkitec.local:1830/emd/main/
oracle_hadoop_hive_server      Hadoop Hive Server2	      HiveServer2_enkx4bda		  HiveServer2_enkx4bda		      https://enkx4bda1node04.enkitec.local:1830/emd/main/
oracle_hadoop_hive_webhcat     Hadoop Hive WebHCat Server     WebHCat_enkx4bda			  WebHCat_enkx4bda		      https://enkx4bda1node04.enkitec.local:1830/emd/main/
oracle_hadoop_hue	       Hadoop Hue		      hue_enkx4bda			  hue_enkx4bda			      https://enkx4bda1node01.enkitec.local:1830/emd/main/
oracle_hadoop_impala	       Hadoop Impala		      impala_enkx4bda			  impala_enkx4bda		      https://enkx4bda1node01.enkitec.local:1830/emd/main/
oracle_hadoop_impala_demon     Hadoop Impala Daemon	      ImpalaD_enkx4bda1node01_enkx4bda	  ImpalaD_enkx4bda1node01_enkx4bda    https://enkx4bda1node01.enkitec.local:1830/emd/main/
oracle_hadoop_impala_demon     Hadoop Impala Daemon	      ImpalaD_enkx4bda1node02_enkx4bda	  ImpalaD_enkx4bda1node02_enkx4bda    https://enkx4bda1node02.enkitec.local:1830/emd/main/
oracle_hadoop_impala_demon     Hadoop Impala Daemon	      ImpalaD_enkx4bda1node03_enkx4bda	  ImpalaD_enkx4bda1node03_enkx4bda    https://enkx4bda1node03.enkitec.local:1830/emd/main/
oracle_hadoop_impala_demon     Hadoop Impala Daemon	      ImpalaD_enkx4bda1node04_enkx4bda	  ImpalaD_enkx4bda1node04_enkx4bda    https://enkx4bda1node04.enkitec.local:1830/emd/main/
oracle_hadoop_impala_demon     Hadoop Impala Daemon	      ImpalaD_enkx4bda1node06_enkx4bda	  ImpalaD_enkx4bda1node06_enkx4bda    https://enkx4bda1node06.enkitec.local:1830/emd/main/
oracle_hadoop_impala_server_cat Hadoop Impala Server Catalogue ImpalaCatSrv_enkx4bda		  ImpalaCatSrv_enkx4bda 	      https://enkx4bda1node06.enkitec.local:1830/emd/main/
oracle_hadoop_impala_statestore Hadoop Impala State Store      StateStore_enkx4bda		  StateStore_enkx4bda		      https://enkx4bda1node06.enkitec.local:1830/emd/main/
oracle_hadoop_journalnode      Hadoop Journal Node	      JN_enkx4bda1node01_enkx4bda	  JN_enkx4bda1node01_enkx4bda	      https://enkx4bda1node01.enkitec.local:1830/emd/main/
oracle_hadoop_journalnode      Hadoop Journal Node	      JN_enkx4bda1node02_enkx4bda	  JN_enkx4bda1node02_enkx4bda	      https://enkx4bda1node02.enkitec.local:1830/emd/main/
oracle_hadoop_journalnode      Hadoop Journal Node	      JN_enkx4bda1node03_enkx4bda	  JN_enkx4bda1node03_enkx4bda	      https://enkx4bda1node03.enkitec.local:1830/emd/main/
oracle_hadoop_kerberos	       Kerberos 		      kerberos_enkx4bda 		  kerberos_enkx4bda		      https://enkx4bda1node01.enkitec.local:1830/emd/main/
oracle_hadoop_mysql	       MySql			      mysql_enkx4bda			  mysql_enkx4bda		      https://enkx4bda1node01.enkitec.local:1830/emd/main/
oracle_hadoop_namenode	       Hadoop NameNode		      NNA_enkx4bda			  NNA_enkx4bda			      https://enkx4bda1node01.enkitec.local:1830/emd/main/
oracle_hadoop_namenode	       Hadoop NameNode		      NNB_enkx4bda			  NNB_enkx4bda			      https://enkx4bda1node02.enkitec.local:1830/emd/main/
oracle_hadoop_nodemgr	       Hadoop NodeManager	      NM_enkx4bda1node01_enkx4bda	  NM_enkx4bda1node01_enkx4bda	      https://enkx4bda1node01.enkitec.local:1830/emd/main/
oracle_hadoop_nodemgr	       Hadoop NodeManager	      NM_enkx4bda1node02_enkx4bda	  NM_enkx4bda1node02_enkx4bda	      https://enkx4bda1node02.enkitec.local:1830/emd/main/
oracle_hadoop_nodemgr	       Hadoop NodeManager	      NM_enkx4bda1node03_enkx4bda	  NM_enkx4bda1node03_enkx4bda	      https://enkx4bda1node03.enkitec.local:1830/emd/main/
oracle_hadoop_nodemgr	       Hadoop NodeManager	      NM_enkx4bda1node04_enkx4bda	  NM_enkx4bda1node04_enkx4bda	      https://enkx4bda1node04.enkitec.local:1830/emd/main/
oracle_hadoop_nodemgr	       Hadoop NodeManager	      NM_enkx4bda1node05_enkx4bda	  NM_enkx4bda1node05_enkx4bda	      https://enkx4bda1node05.enkitec.local:1830/emd/main/
oracle_hadoop_nodemgr	       Hadoop NodeManager	      NM_enkx4bda1node06_enkx4bda	  NM_enkx4bda1node06_enkx4bda	      https://enkx4bda1node06.enkitec.local:1830/emd/main/
oracle_hadoop_oozie	       Hadoop Oozie		      oozie_enkx4bda			  oozie_enkx4bda		      https://enkx4bda1node01.enkitec.local:1830/emd/main/
oracle_hadoop_oozie_server     Hadoop Oozie Server	      OozieServer_enkx4bda		  OozieServer_enkx4bda		      https://enkx4bda1node04.enkitec.local:1830/emd/main/
oracle_hadoop_resourcemgr      Hadoop ResourceManager	      RMA_enkx4bda			  RMA_enkx4bda			      https://enkx4bda1node04.enkitec.local:1830/emd/main/
oracle_hadoop_resourcemgr      Hadoop ResourceManager	      RMB_enkx4bda			  RMB_enkx4bda			      https://enkx4bda1node03.enkitec.local:1830/emd/main/
oracle_hadoop_solr	       Hadoop Solr		      solr_enkx4bda			  solr_enkx4bda 		      https://enkx4bda1node01.enkitec.local:1830/emd/main/
oracle_hadoop_solr_server      Hadoop Solr Server	      SolrServer_enkx4bda		  SolrServer_enkx4bda		      https://enkx4bda1node03.enkitec.local:1830/emd/main/
oracle_hadoop_spark_on_yarn    Hadoop Spark On Yarn	      spark_on_yarn_enkx4bda		  spark_on_yarn_enkx4bda	      https://enkx4bda1node01.enkitec.local:1830/emd/main/
oracle_hadoop_yarn	       Hadoop Yarn		      yarn_enkx4bda			  yarn_enkx4bda 		      https://enkx4bda1node01.enkitec.local:1830/emd/main/
oracle_hadoop_zookeeper        Hadoop ZooKeeper 	      zookeeper_enkx4bda		  zookeeper_enkx4bda		      https://enkx4bda1node01.enkitec.local:1830/emd/main/
oracle_hadoop_zookeeper_server Hadoop ZooKeeper Server	      ZKS_enkx4bda1node01_enkx4bda	  ZKS_enkx4bda1node01_enkx4bda	      https://enkx4bda1node01.enkitec.local:1830/emd/main/
oracle_hadoop_zookeeper_server Hadoop ZooKeeper Server	      ZKS_enkx4bda1node02_enkx4bda	  ZKS_enkx4bda1node02_enkx4bda	      https://enkx4bda1node02.enkitec.local:1830/emd/main/
oracle_hadoop_zookeeper_server Hadoop ZooKeeper Server	      ZKS_enkx4bda1node03_enkx4bda	  ZKS_enkx4bda1node03_enkx4bda	      https://enkx4bda1node03.enkitec.local:1830/emd/main/

....

oracle_oms		       Oracle Management Service      enkx4bdacli02.enkitec.local:4889_Ma enkx4bdacli02.enkitec.local:4889_Ma https://enkx4bdacli02.enkitec.local:3872/emd/main/
							      nagement_Service			  nagement_Service
oracle_oms_console	       OMS Console		      enkx4bdacli02.enkitec.local:4889_Ma enkx4bdacli02.enkitec.local:4889_Ma https://enkx4bdacli02.enkitec.local:3872/emd/main/
							      nagement_Service_CONSOLE		  nagement_Service_CONSOLE
oracle_oms_pbs		       OMS Platform		      enkx4bdacli02.enkitec.local:4889_Ma enkx4bdacli02.enkitec.local:4889_Ma https://enkx4bdacli02.enkitec.local:3872/emd/main/
							      nagement_Service_PBS		  nagement_Service_PBS
oracle_si_pdu		       Systems Infrastructure PDU     enkx4bda1-pdua			  enkx4bda1-pdua		      https://enkx4bda1node02.enkitec.local:1830/emd/main/
oracle_si_pdu		       Systems Infrastructure PDU     enkx4bda1-pdub			  enkx4bda1-pdub		      https://enkx4bda1node02.enkitec.local:1830/emd/main/


164 rows selected

The following query shows just oracle_bda_cluster type of target.

col ENTITY_TYPE for a20
col TYPE_DISPLAY_NAME for a20
col ENTITY_NAME for a16
col DISPLAY_NAME for a16
col EMD_URL for a55
SELECT ENTITY_TYPE,
       TYPE_DISPLAY_NAME,
       ENTITY_NAME,
       DISPLAY_NAME,
       EMD_URL
FROM   SYSMAN.EM_MANAGEABLE_ENTITIES
WHERE  
ENTITY_TYPE = 'oracle_bda_cluster'
;
ENTITY_TYPE	     TYPE_DISPLAY_NAME	  ENTITY_NAME	   DISPLAY_NAME     EMD_URL
-------------------- -------------------- ---------------- ---------------- -------------------------------------------------------
oracle_bda_cluster   BDA Network	  BDA Network 1    BDA Network 1    https://enkx4bda1node02.enkitec.local:1830/emd/main/

Ok, we can see entity_type is oracle_bda_cluster for BDA Network. Both target name and display name are BDA Network 1.

Next, I will check whether I can rename the target name of BDA Network 1. I used emcli rename_target command in the past to rename OEM target. It usually works. So I run the following command:

[oracle@enkx4bdacli02 ~]$ emcli show_bda_clusters
BDA Network 1 : enkx4bda

[oracle@enkx4bdacli02 ~]$ emcli get_targets -targets="oracle_bda_cluster"
Status  Status           Target Type           Target Name                        
 ID                                                                               
-9      N/A              oracle_bda_cluster    BDA Network 1  

[oracle@enkx4bdacli02 ~]$ emcli rename_target -target_type="oracle_bda_cluster" -target_name="BDA Network 1" -new_target_name="X4BDA"
Rename not supported for the given Target Type.

No luck. It doesn’t work. If renaming target name not working, let me try to change display name.

[oracle@enkx4bdacli02 ~]$ emcli modify_target -type="oracle_bda_cluster" -name="BDA Network 1" -display_name="X4BDA"
Target "BDA Network 1:oracle_bda_cluster" modified successfully

It works. Rerun the query to check oracle_bda_cluster type.

ENTITY_TYPE	     TYPE_DISPLAY_NAME	  ENTITY_NAME	   DISPLAY_NAME     EMD_URL
-------------------- -------------------- ---------------- ---------------- -------------------------------------------------------
oracle_bda_cluster   BDA Network	  BDA Network 1    X4BDA	    https://enkx4bda1node02.enkitec.local:1830/emd/main/

Well it work partially. For some screens, it works perfectly.

But for some other screen, it still shows the same annoying name.

Another lesson I learned recently is that you need very careful in using default password when setting up BDA. Once setting up BDA using default password and OEM BDA Discovery is using these default password for Named Credentials, you will run into issue after you change default password later on. In the worst case, like Cloudera Manager’s password change, it requires the remove the current BDA target and redo the BDA Discovery. I may write this topic in a different blog if I have time.