[root@wallet03 ~]# yum install -y glibc-devel.i686

[root@wallet03 ~]# su - oracle
[oracle@wallet03 ~]$ emca -deconfig dbcontrol db -repos drop -SYS_PWD oracle -SYSMAN_PWD oracle

STARTED EMCA at May 30, 2019 12:37:38 PM
EM Configuration Assistant, Version 11.2.0.3.0 Production
Copyright (c) 2003, 2011, Oracle.  All rights reserved.

Enter the following information:
Database SID: wallet
Listener port number: 1521

----------------------------------------------------------------------
WARNING : While repository is dropped the database will be put in quiesce mode.
----------------------------------------------------------------------
Do you wish to continue? [yes(Y)/no(N)]: yes
May 30, 2019 12:37:48 PM oracle.sysman.emcp.EMConfig perform
INFO: This operation is being logged at /u01/app/oracle/cfgtoollogs/emca/wallet03/emca_2019_05_30_12_37_38.log.
May 30, 2019 12:37:48 PM oracle.sysman.emcp.util.GeneralUtil initSQLEngineLoacly
WARNING: ORA-28000: the account is locked

May 30, 2019 12:37:48 PM oracle.sysman.emcp.ParamsManager checkListenerStatusForDBControl
WARNING: Error initializing SQL connection. SQL operations cannot be performed
May 30, 2019 12:37:48 PM oracle.sysman.emcp.EMDBPreConfig performDeconfiguration
WARNING: EM is not configured for this database. No EM-specific actions can be performed. Some of the possible reasons may be: 
 1) EM is configured with different hostname then physical host. Set environment variable ORACLE_HOSTNAME=<hostname> and re-run EMCA script 
 2) ORACLE_HOSTNAME is set. Unset it and re-run EMCA script
May 30, 2019 12:37:48 PM oracle.sysman.emcp.EMReposConfig invoke
INFO: Dropping the EM repository (this may take a while) ...
May 30, 2019 12:38:47 PM oracle.sysman.emcp.EMReposConfig invoke
INFO: Repository successfully dropped
Enterprise Manager configuration completed successfully
FINISHED EMCA at May 30, 2019 12:38:47 PM

[oracle@wallet03 ~]$ sqlplus / as sysdba
SQL> alter system set processes=300 scope=spfile;
System altered.

SQL>alter system set session_cached_cursors=200 scope=spfile;
System altered.

SQL> alter system set job_queue_processes=20 scope=spfile;
System altered.

[oracle@wallet03 ~]$ mkdir -p /u01/app/oracle/Middleware
[oracle@wallet03 ~]$ mkdir -p /u01/app/oracle/agent

[oracle@wallet03 ~]$ unzip em12105_linux64_disk1.zip
[oracle@wallet03 ~]$ unzip em12105_linux64_disk2.zip
[oracle@wallet03 ~]$ unzip em12105_linux64_disk3.zip

[oracle@wallet03 ~]$ ./runInstaller

[root@wallet03 ~]# /u01/app/oracle/Middleware/oms/allroot.sh

Starting to execute allroot.sh ......... 

Starting to execute /u01/app/oracle/Middleware/oms/root.sh ......
Running Oracle 11g root.sh script...

The following environment variables are set as:
    ORACLE_OWNER= oracle
    ORACLE_HOME=  /u01/app/oracle/Middleware/oms

Enter the full pathname of the local bin directory: [/usr/local/bin]: 
The file "dbhome" already exists in /usr/local/bin.  Overwrite it? (y/n) 
[n]: 
The file "oraenv" already exists in /usr/local/bin.  Overwrite it? (y/n) 
[n]: 
The file "coraenv" already exists in /usr/local/bin.  Overwrite it? (y/n) 
[n]: 

Entries will be added to the /etc/oratab file as needed by
Database Configuration Assistant when a database is created
Finished running generic part of root.sh script.
Now product-specific root actions will be performed.
/etc exist

Creating /etc/oragchomelist file...
/u01/app/oracle/Middleware/oms
Finished execution of  /u01/app/oracle/Middleware/oms/root.sh ......

Starting to execute /u01/app/oracle/agent/core/12.1.0.5.0/root.sh ......
Finished product-specific root actions.
/etc exist
Finished execution of  /u01/app/oracle/agent/core/12.1.0.5.0/root.sh ......

[root@wallet03 ~]# vi /etc/oragchomelist
# /u01/app/oracle/Middleware/oms
# /u01/app/oracle/agent/core/12.1.0.5.0:/u01/app/oracle/agent/agent_inst

[oracle@wallet03 ~]$ cd /u01/app/oracle/Middleware/oms/bin
[oracle@wallet03 bin]$ ./emctl status oms
Oracle Enterprise Manager Cloud Control 12c Release 5  
Copyright (c) 1996, 2015 Oracle Corporation.  All rights reserved.
WebTier is Up
Oracle Management Server is Up

[oracle@wallet03 ~]$ cd /u01/app/oracle/agent/core/12.1.0.5.0/bin
[oracle@wallet03 bin]$ ./emctl status agent
Oracle Enterprise Manager Cloud Control 12c Release 5  
Copyright (c) 1996, 2015 Oracle Corporation.  All rights reserved.
---------------------------------------------------------------
Agent Version          : 12.1.0.5.0
OMS Version            : 12.1.0.5.0
Protocol Version       : 12.1.0.1.0
Agent Home             : /u01/app/oracle/agent/agent_inst
Agent Log Directory    : /u01/app/oracle/agent/agent_inst/sysman/log
Agent Binaries         : /u01/app/oracle/agent/core/12.1.0.5.0
Agent Process ID       : 15941
Parent Process ID      : 15897
Agent URL              : https://emcc.gscaifu.com:3872/emd/main/
Local Agent URL in NAT : https://emcc.gscaifu.com:3872/emd/main/
Repository URL         : https://emcc.gscaifu.com:4903/empbs/upload
Started at             : 2019-05-30 15:01:23
Started by user        : oracle
Operating System       : Linux version 2.6.32-431.el6.x86_64 (amd64)
Last Reload            : (none)
Last successful upload                       : 2019-05-30 15:23:48
Last attempted upload                        : 2019-05-30 15:23:48
Total Megabytes of XML files uploaded so far : 1.25
Number of XML files pending upload           : 0
Size of XML files pending upload(MB)         : 0
Available disk space on upload filesystem    : 25.47%
Collection Status                            : Collections enabled
Heartbeat Status                             : Ok
Last attempted heartbeat to OMS              : 2019-05-30 15:27:37
Last successful heartbeat to OMS             : 2019-05-30 15:27:37
Next scheduled heartbeat to OMS              : 2019-05-30 15:28:37

---------------------------------------------------------------
Agent is Running and Ready