10gGridControl failed to start a managed process after the maximum retry limit

by 
[oracle@dbserver1 bin]$ ./opmnctl stopall
opmnctl: stopping opmn and all managed processes...
[oracle@dbserver1 bin]$ ./opmnctl startall
opmnctl: starting opmn and all managed processes...
================================================================================
opmn id=dbserver1:6200
    4 of 6 processes started.

ias-instance id=EnterpriseManager0.localhost
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
--------------------------------------------------------------------------------
ias-component/process-type/process-set:
    WebCache/WebCache/WebCache

Error
--> Process (pid=10003)
    failed to start a managed process after the maximum retry limit
    Log:
    /u01/app/oracle/grid/oms10g/opmn/logs/WebCache~WebCache~1

--------------------------------------------------------------------------------
ias-component/process-type/process-set:
    WebCache/WebCacheAdmin/WebCacheAdmin

Error
--> Process (pid=9958)
    failed to start a managed process after the maximum retry limit
    Log:
    /u01/app/oracle/grid/oms10g/opmn/logs/WebCache~WebCacheAdmin~1

[oracle@dbserver1 bin]$ vi /u01/app/oracle/grid/oms10g/opmn/logs/WebCache~WebCache~1

...
Oracle Application Server Web Cache 10g (10.1.2)
Copyright (c) 1999, 2005, Oracle. All rights reserved.

[10/Jul/2012:10:09:18 +0800] [error 13079] [ecid: -] No matching CACHE element found in 

webcache.xml for current hostname (dbserver1) and ORACLE_HOME (/u01/a
pp/oracle/grid/oms10g)
[10/Jul/2012:10:09:18 +0800] [alert 9000] [ecid: -] Process 9957 exit(1) at 5765:loadcfg.c [Build 

10.1.2.0.2 050802]

--------
12/07/10 10:09:21 Start process
--------

Oracle Application Server Web Cache 10g (10.1.2)
Copyright (c) 1999, 2005, Oracle. All rights reserved.

[10/Jul/2012:10:09:21 +0800] [error 13079] [ecid: -] No matching CACHE element found in 

webcache.xml for current hostname (dbserver1) and ORACLE_HOME (/u01/a
pp/oracle/grid/oms10g)
[10/Jul/2012:10:09:21 +0800] [alert 9000] [ecid: -] Process 10003 exit(1) at 5765:loadcfg.c 

[Build 10.1.2.0.2 050802]

[oracle@dbserver1 bin]$ ./opmnctl status

Processes in Instance: EnterpriseManager0.localhost
-------------------+--------------------+---------+---------
ias-component      | process-type       |     pid | status
-------------------+--------------------+---------+---------
DSA                | DSA                |     N/A | Down
HTTP_Server        | HTTP_Server        |    9929 | Alive
LogLoader          | logloaderd         |     N/A | Down
dcm-daemon         | dcm-daemon         |     N/A | Down
OC4J               | home               |    9930 | Alive
OC4J               | OC4J_EM            |    9931 | Alive
OC4J               | OC4J_EMPROV        |    9939 | Alive
WebCache           | WebCache           |     N/A | Down
WebCache           | WebCacheAdmin      |     N/A | Down   

[oracle@dbserver1 bin]$ hostname
dbserver1
[oracle@dbserver1 bin]$ vi $OMS_HOME/webcache/webcache.xml

<CACHE NAME="localhost-WebCache" ORACLEHOME="/u01/app/oracle/grid/oms10g" HOSTNAME="localhost" VOTES="1" CAPACITY="30" WCDEBUGON="NO">
改为
 <CACHE NAME="localhost-WebCache" ORACLEHOME="/u01/app/oracle/grid/oms10g" HOSTNAME="dbserver1" VOTES="1" CAPACITY="30" WCDEBUGON="NO">

[oracle@dbserver1 bin]$ ./opmnctl startall
opmnctl: starting opmn and all managed processes...
[oracle@dbserver1 bin]$ ./opmnctl status

Processes in Instance: EnterpriseManager0.localhost
-------------------+--------------------+---------+---------
ias-component      | process-type       |     pid | status
-------------------+--------------------+---------+---------
DSA                | DSA                |     N/A | Down
HTTP_Server        | HTTP_Server        |    9929 | Alive
LogLoader          | logloaderd         |     N/A | Down
dcm-daemon         | dcm-daemon         |     N/A | Down
OC4J               | home               |    9930 | Alive
OC4J               | OC4J_EM            |    9931 | Alive
OC4J               | OC4J_EMPROV        |    9939 | Alive
WebCache           | WebCache           |   10163 | Alive
WebCache           | WebCacheAdmin      |   10155 | Alive