问题现象：Oracle GoldenGate Monitor agent正常安装后，info all中查看JAGENT 进程已经存在，进程也可以正常启动，但是OEM的OGG插件自动搜索始终无法搜索到OGG组件；

问题排查：使用ORACLE MOS文档How To Run jagentdebug.jar Debug Script To Help with GoldenGate Monitoring Issues (OEM/OGG Monitor Server)? (Doc ID 2410209.1)中的jagentdebug.jar DEBUG，整个ogg monitor客户端的安装也是正常的；后经排查，ogg monitor的日志，有OGGMON-20603、OGGMON-20609等报错，进一步分析排查，需要安装补丁29684138(ogg monitor监控OGG 18C以上版本时需要，本次使用的是OGG 19.1.0.0.210720 版本)，安装此补丁后可以从OEM13.2版本中搜索到OGG并加入监控；

ogg monitor客户端日志信息：

[2021-10-15T10:29:53.650+08:00] [JAGENT] [ERROR] [OGGMON-20603] [com.goldengate.monitor.jagent.comm.ws.ManagerService] [tid: MessageCollector] [ecid: 0000Nm1gtXy0rm^_xTs1yW1XQE8n000002,0] RESTful Web Service with name messages/last has become unresponsive
[2021-10-15T10:29:58.607+08:00] [JAGENT] [ERROR] [OGGMON-20494] [com.goldengate.monitor.jagent.comm.ws.NotificationsCollector] [tid: StatusCollector] [ecid: 0000Nm1gtXx0rm^_xTs1yW1XQE8n000001,0] Error occurred while registering the OGG process. Exception: [[
 source parameter must not be null 
]]
[2021-10-15T10:29:58.651+08:00] [JAGENT] [ERROR] [OGGMON-20609] [com.goldengate.monitor.jagent.comm.ws.ManagerService] [tid: MessageCollector] [ecid: 0000Nm1gtXy0rm^_xTs1yW1XQE8n000002,0] Unsuccessful connection response from Message Web Service. Query String: messages/last ; Response Code: 404 ; Response Message: Not Found
[2021-10-15T10:29:58.652+08:00] [JAGENT] [ERROR] [OGGMON-20603] [com.goldengate.monitor.jagent.comm.ws.ManagerService] [tid: MessageCollector] [ecid: 0000Nm1gtXy0rm^_xTs1yW1XQE8n000002,0] RESTful Web Service with name messages/last has become unresponsive
[2021-10-15T10:29:58.652+08:00] [JAGENT] [ERROR] [OGGMON-20609] [com.goldengate.monitor.jagent.comm.ws.ManagerService] [tid: MessageCollector] [ecid: 0000Nm1gtXy0rm^_xTs1yW1XQE8n000002,0] Unsuccessful connection response from Message Web Service. Query String: messages/last ; Response Code: 404 ; Response Message: Not Found

打补丁过程：

GGSCI (oracle12c) 4> info all

Program     Status      Group       Lag at Chkpt  Time Since Chkpt

MANAGER     RUNNING                                           
JAGENT      STOPPED                                           
PMSRVR      STOPPED                                           
EXTRACT     RUNNING     EXT1        00:00:00      00:00:00    
EXTRACT     RUNNING     PUMP1       00:00:00      00:00:04    


先关闭JAGNET进程，这样OGG MONITOR目录就没有活动进程，可以ps -ef确认，之后才能打补丁，与ORACLE数据库软件打补丁一样道理。
$export ORACLE_HOME=/oracle/wls  ===>>要设置OGG安装路径

[oracle@oracle12c:/home/oracle/29684138]$/oracle/wls/OPatch/opatch lsinv
Oracle Interim Patch Installer version 13.9.1.0.0
Copyright (c) 2021, Oracle Corporation.  All rights reserved.


Oracle Home       : /oracle/wls
Central Inventory : /oracle/oraInventoryogg
   from           : /oracle/wls/oraInst.loc
OPatch version    : 13.9.1.0.0
OUI version       : 13.9.1.0.0
Log file location : /oracle/wls/cfgtoollogs/opatch/opatch2021-10-15_13-37-51PM_1.log


OPatch detects the Middleware Home as "/oracle/wls"

Lsinventory Output file location : /oracle/wls/cfgtoollogs/opatch/lsinv/lsinventory2021-10-15_13-37-51PM.txt

--------------------------------------------------------------------------------
Local Machine Information::
Hostname: oracle12c
ARU platform id: 226
ARU platform description:: Linux x86-64


Interim patches (6) :

Patch  22754279     : applied on Thu Oct 14 21:09:29 CST 2021
Unique Patch ID:  20383951
Patch description:  "One-off"
   Created on 9 Jul 2016, 00:36:58 hrs UTC
   Bugs fixed:
     22754279

Patch  21663638     : applied on Thu Oct 14 21:09:02 CST 2021
Unique Patch ID:  20477024
Patch description:  "One-off"
   Created on 31 Aug 2016, 21:01:13 hrs UTC
   Bugs fixed:
     21663638

Patch  19795066     : applied on Thu Oct 14 21:08:34 CST 2021
Unique Patch ID:  19149348
Patch description:  "One-off"
   Created on 16 Jul 2015, 15:51:43 hrs UTC
   Bugs fixed:
     19795066

Patch  19632480     : applied on Thu Oct 14 21:08:08 CST 2021
Unique Patch ID:  19278519
Patch description:  "One-off"
   Created on 25 Aug 2015, 07:19:43 hrs UTC
   Bugs fixed:
     19632480

Patch  19154304     : applied on Thu Oct 14 21:07:41 CST 2021
Unique Patch ID:  19278518
Patch description:  "One-off"
   Created on 25 Aug 2015, 07:10:13 hrs UTC
   Bugs fixed:
     19154304

Patch  19030178     : applied on Thu Oct 14 21:07:14 CST 2021
Unique Patch ID:  19234068
Patch description:  "One-off"
   Created on 4 Aug 2015, 05:40:22 hrs UTC
   Bugs fixed:
     19030178



--------------------------------------------------------------------------------

OPatch succeeded.


[oracle@oracle12c:/home/oracle/29684138]$/oracle/wls/OPatch/opatch apply
Oracle Interim Patch Installer version 13.9.1.0.0
Copyright (c) 2021, Oracle Corporation.  All rights reserved.


Oracle Home       : /oracle/wls
Central Inventory : /oracle/oraInventoryogg
   from           : /oracle/wls/oraInst.loc
OPatch version    : 13.9.1.0.0
OUI version       : 13.9.1.0.0
Log file location : /oracle/wls/cfgtoollogs/opatch/opatch2021-10-15_13-38-00PM_1.log


OPatch detects the Middleware Home as "/oracle/wls"

Verifying environment and performing prerequisite checks...
OPatch continues with these patches:   29684138  

Do you want to proceed? [y|n]
y
User Responded with: Y
All checks passed.

Please shutdown Oracle instances running out of this ORACLE_HOME on the local system.
(Oracle Home = '/oracle/wls')


Is the local system ready for patching? [y|n]
y
User Responded with: Y
Backing up files...
Applying interim patch '29684138' to OH '/oracle/wls'

Patching component oracle.ogg.monitor.agent, 12.2.1.2.0...

Patching component oracle.ogg.monitor.agent, 12.2.1.2.0...
Patch 29684138 successfully applied.
Log file location: /oracle/wls/cfgtoollogs/opatch/opatch2021-10-15_13-38-00PM_1.log

OPatch succeeded.