dbca建库时Error securing Database Control

如果你的数据库从10.2.01升级到了10.2.04,然后用dbca建立数据库是84%会遇到下面的警告
Error securing Database Control, Database Control has been brought up in non-secure mode. To secure the Database Control execute the following command(s):
1) Set the environment variable ORACLE_SID to testdb
2) C:\\oracle\\product\\10.2.0\\db_1\\bin\\emctl.bat stop dbconsole
3) C:\\oracle\\product\\10.2.0\\db_1\\bin\\emctl.bat config emkey -repos -sysman_pwd < Password for SYSMAN user >
4) C:\\oracle\\product\\10.2.0\\db_1\\bin\\emctl.bat secure dbconsole -sysman_pwd < Password for SYSMAN user >
5) C:\\oracle\\product\\10.2.0\\db_1\\bin\\emctl.bat start dbconsole
To secure Em Key, run C:\\oracle\\product\\10.2.0\\db_1\\bin\\emctl.bat config emkey -remove_from_repos -sysman_pwd < Password for SYSMAN user >
according to the metalink ID 7189031 it seams to be a bug.
这是一个bug 7262226，而且好像还没有补丁来解决这个问题，我今天也遇到了这个问题，但是emctl start dbcolsole正常 ，而且不影响使用，不过有一种声音，说是在dbca前没有配置监听服务，的确启动web em服务需要先启动listener服务，据说先启动了监听再DBCA就不会提示了。