一. Bug 问题表现
MOS 上关于这个bug的说明，参考：[ID 1222603.1]
该bug 的表现为DBCA和DBUA 配置失败：
Database Configuration Assistant (DBCA) and Database Upgrade Assistant (DBUA) will report the following error in the console:
Could not complete the Enterprise Manager configuration.
Enterprise manager configuration failed due to the following error –
Error starting Database Control
Enterprise Manager Configuration Assistant (EMCA) will write errors similar to those below to the emca.log file:
CONFIG: Securing Database Control completed successfully .
Jan 2, 2011 7:22:47 PM oracle.sysman.emcp.ParamsManager getParam
CONFIG: No value was set for the parameter ORACLE_HOSTNAME.
Jan 2, 2011 7:22:47 PM oracle.sysman.emcp.util.DBControlUtil startOMS
INFO: Starting Database Control (this may take a while) ...
Jan 2, 2011 7:22:47 PM oracle.sysman.emcp.util.PlatformInterface addEnvVarToList
CONFIG: Value for env var ''ORACLE_HOSTNAME'' is '''', discarding the same
CONFIG: Returning env array from cache
Jan 2, 2011 7:22:47 PM oracle.sysman.emcp.util.PlatformInterface executeCommand
CONFIG: Starting execution: /myhost/bin/emctl start dbconsole
Jan 2, 2011 7:27:26 PM oracle.sysman.emcp.util.PlatformInterface executeCommand
CONFIG: Exit value of 1
Jan 2, 2011 7:27:26 PM oracle.sysman.emcp.util.PlatformInterface executeCommand
CONFIG: Oracle Enterprise Manager 10g Database Control Release 10.2.0.4.0
Copyright (c) 1996, 2007 Oracle Corporation. All rights reserved.
https://myhost:5501/em/console/aboutApplication
Starting Oracle Enterprise Manager 10g Database Control
............................................................................................. failed.
------------------------------------------------------------------
Logs are generated in directory /myhost/sysman/log
Jan 2, 2011 7:27:26 PM oracle.sysman.emcp.util.PlatformInterface executeCommand
WARNING: Error executing /myhost/bin/emctl start dbconsole
Jan 2, 2011 7:27:26 PM oracle.sysman.emcp.EMConfig perform
SEVERE: Error starting Database Control
Refer to the log file at /myhost/dbua/d4/upgrade/emConfig.log for more details.
Jan 2, 2011 7:27:26 PM oracle.sysman.emcp.EMConfig perform
CONFIG: Stack Trace:
oracle.sysman.emcp.exception.EMConfigException: Error starting Database Control
at oracle.sysman.emcp.EMDBPostConfig.performUpgrade(EMDBPostConfig.java:763)
at oracle.sysman.emcp.EMDBPostConfig.invoke(EMDBPostConfig.java:232)
at oracle.sysman.emcp.EMDBPostConfig.invoke(EMDBPostConfig.java:193)
at oracle.sysman.emcp.EMConfig.perform(EMConfig.java:184)
at oracle.sysman.assistants.util.em.EMConfiguration.run(EMConfiguration.java:436)
at oracle.sysman.assistants.util.em.EMConfigStep.executeImpl(EMConfigStep.java:140)
at oracle.sysman.assistants.util.step.BasicStep.execute(BasicStep.java:210)
at oracle.sysman.assistants.util.step.BasicStep.callStep(BasicStep.java:251)
at oracle.sysman.assistants.dbma.backend.EMConfigStep.executeStepImpl(EMConfigStep.java:104)
at oracle.sysman.assistants.dbma.backend.SummarizableStep.executeImpl(SummarizableStep.java:175)
at oracle.sysman.assistants.util.step.BasicStep.execute(BasicStep.java:210)
at oracle.sysman.assistants.util.step.Step.execute(Step.java:140)
at oracle.sysman.assistants.util.step.StepContext$ModeRunner.run(St