OUI-25031 error when installing GridControl10.2.0.3 on RHEL5.4

Error: Configurationassistantquot; OMSConfigurationquot; failed

Error: Configuration assistant quot; OMS Configurationquot; failed

When Grid Control 10.2.0.3 is installed on RHEL5.4 and configured in OMS, an error occurs:
Configuration assistant "OMS Configuration" failed
-----------------------------------------------------------------------------
The "/opt/Oracle/OracleHomes/agent10g/export toollogs/configToolFailedCommands" script. contains all commands that failed, were skipped or were canceled. this file may be used to run these configuration assistants outside of OUI. note that you may have to update this script. with passwords (if any) before executing the same.
.

At first, I thought it was a problem with agnet. I found it online, some people say that the "Specify Agent regiify Password" provided during Agent installation is inconsistent with the actual OMS's "Agent Registration Passwords", and they are prepared to reset the Agent Registration Passwords according to their methods.

Later I found that EM could not be opened. It seems that HTTP_Server was not started.
[Oracle @ cfbgc 8430622] $ cd/opt/oracle/OracleHomes/oms10g/opmn/bin/
[Oracle @ cfbgc bin] $ opmnctl status

Processes in Instance: EnterpriseManager0.cfbgc. localdomain
------------------- + -------------------- + ---------
Ias-component | process-type | pid | status
------------------- + -------------------- + ---------
DSA | N/A | Down
HTTP_Server | 31667 | Down
LogLoader | logloaderd | N/A | Down
Dcm-daemon | N/A | Down
Productname | home | 31668 | Alive
Productname | OC4J_EM | 31669 | Alive
Productname | OC4J_EMPROV | 31679 | Alive
WebCache | 24721 | Alive
WebCache | WebCacheAdmin | 31681 | Alive

Start HTTP_Server
[Oracle @ cfbgc bin] $ opmnctl startproc ias-component = HTTP_Server
Error
--> Process (pid = 24140)
Failed to start a managed process after the maximum retry limit
Log:
/U01/app/oracle/product/10.2.0GC/oms10g/opmn/logs/HTTP_Server ~ 1

View logs
[Error] mod_ossl: Init: Server ysoms01: 1159: SSL setup failed: call to nzos_OpenWallet returned error 28750
[Error] mod_ossl: Unknown error

Configuration assistant "OMS Configuration" failed
-----------------------------------------------------------------------------
The "/opt/oracle/OracleHomes/agent10g/export toollogs/configToolFailedCommands" script. contains all commands that failed, were skipped or were canceled. this file may be used to run these configuration assistants outside of OUI. note that you may have to update this script. with passwords (if any) before executing the same.

This is because the "Specify Agent regiify Password" provided during Agent installation is inconsistent with the actual OMS's "Agent Registration Passwords"

Reset the Agent Registration Passwords and then click "Retry" to try again.

Opmnctl startproc ias-component = HTTP_Server
[Error] mod_ossl: Init: Server ysoms01: 1159: SSL setup failed: call to nzos_OpenWallet returned error 28750
[Error] mod_ossl: Unknown error

Finally, I found this bug on the Internet and needed to install patch 8430622.
Note: Do not exit the previous installation screen during upgrade.
Note: ORACLE_HOME described in Patch 8430622 refers to $ OMS_HOME.
Set $ ORACLE_HOME first and stop oms
[Oracle @ cfbgc OPatch] $ echo $ ORACLE_HOME
/Opt/oracle/OracleHomes/db10g/
[Oracle @ cfbgc OPatch] $ export ORACLE_HOME =/opt/oracle/OracleHomes/oms10g/
[Oracle @ cfbgc OPatch] $ echo $ ORACLE_HOME
/Opt/oracle/OracleHomes/oms10g/
[Oracle @ cfbgc OPatch] $ cd ../bin/
[Oracle @ cfbgc bin] $./emctl stop oms
Oracle Enterprise Manager 10g Release 3 Grid Control
Copyright (c) 1996,200 7 Oracle Corporation. All rights reserved.
Oracle Management Server is Down.

[Oracle @ cfbgc bin] $ cd/home/oracle/8430622/
[Oracle @ cfbgc 8430622] $/opt/oracle/OracleHomes/oms10g/OPatch/opatch apply
Invoking OPatch 10.2.0.3.0

Oracle interim Patch Installer version 10.2.0.3.0
Copyright (c) 2005, Oracle Corporation. All rights reserved ..

Oracle Home:/opt/oracle/OracleHomes/oms10g
Central Inventory:/opt/oracle/oraInventory
From:/etc/oraInst. loc
OPatch version: 10.2.0.3.0
OUI version: 10.2.0.3.0
OUI location:/opt/oracle/OracleHomes/oms10g // oui
Log file location:/opt/oracle/OracleHomes/oms10g/export toollogs/opatch/opatch2011-01-02_20-24-43PM.log

ApplySession applying interim patch '000000' to oh'/opt/oracle/OracleHomes/oms10g'

OPatch detected non-cluster Oracle Home from the inventory and will patch the local system only.

Backing up files and inventory (not for auto-rollback) for the Oracle Home
Backing up files affected by the patch '000000' for restore. This might take a while...
Backing up files affected by the patch '000000' for rollback. This might take a while...

Patching component oracle. sysman. top. oms, 10.2.0.3.0...
Updating jar file "/opt/oracle/OracleHomes/oms10g/sysman/jlib/emagentSDK. jar "with"/sysman/jlib/emagentSDK. jar/oracle/sysman/eml/sec/util/RootCert. class"
ApplySession adding interim patch '000000' to inventory

Verifying the update...
Inventory check OK: Patch ID 8430622 is registered in Oracle Home inventory with proper meta-data.
Files check OK: Files from Patch ID 8430622 are present in Oracle Home.

OPatch succeeded.
[Oracle @ cfbgc 8430622] $
[Oracle @ cfbgc oms10g] $ cd opmn/
[Oracle @ cfbgc opmn] $ cd bin/
[Oracle @ cfbgc bin] $./opmnctl stopall
Opmnctl: stopping opmn and all managed processes...
[Oracle @ cfbgc bin] $ cd ..
[Oracle @ cfbgc opmn] $ cd ..
[Oracle @ cfbgc oms10g] $ cd bin/
[Oracle @ cfbgc bin] $./emctl secure oms-reset
Oracle Enterprise Manager 10g Release 3 Grid Control
Copyright (c) 1996,200 7 Oracle Corporation. All rights reserved.
Enter Enterprise Manager Root Password: Enter sys Password: test123
Enter Agent Registration password: Enter the agent password: abc123
OPMN processes already stopped... Done.
Securing central oms... Started.
Checking Repository... Done.
Checking Em Key... Done.
Checking Repository for an existing Enterprise Manager Root Key...
WARNING! An Enterprise Manager Root Key already exists in
The Repository. This operation will replace your Enterprise
Manager Root Key.
All existing Agents that use HTTPS will need to be
Reconfigured if you proceed. Do you wish to continue and
Overwrite your Root Key
(Y/N )?
Y
Are you sure? Reset of the Enterprise Manager Root Key
Will mean that you will need to reconfigure each Agent
That is associated with this OMS before they will be
Able to upload any data to it. Monitoring of Targets
Associated with these Agents will be unavailable
After they are reconfigured.
(Y/N )?
Y
Generating Enterprise Manager Root Key (this takes a minute)... Done.
Fetching Root Certificate from the Repository... Done.
Generating Registration Password Verifier in the Repository... Done.
Generating Oracle Wallet Password for Enterprise Manager OMS... Done.
Generating Oracle Wallet for Enterprise Manager OMS... Done.
Generating Oracle Wallet for iAS HTTP Server... Done.
Updating HTTPS port in emoms. properties file... Done.
Generating HTTPS Virtual Host for Enterprise Manager OMS... Done.
Securing central oms... Ended.
[Oracle @ cfbgc bin] $
[Oracle @ cfbgc bin] $ pwd
/Opt/oracle/OracleHomes/oms10g/bin
[Oracle @ cfbgc bin] $./emctl start oms
Oracle Enterprise Manager 10g Release 3 Grid Control
Copyright (c) 1996,200 7 Oracle Corporation. All rights reserved.
Opmnctl: opmn is already running
Starting HTTP Server...
Starting Oracle Management Server...
Checking Oracle Management Server Status...
Oracle Management Server is Up.
[Oracle @ cfbgc bin] $
"Retry" again, and the installation is successful.

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