【翻译自mos文章】改变数据库用户sysman（该用户是DBControlRepo
改变数据库用户sysman（该用户是DB Control Repository 的schema）密码的方法 参考原文： How To Change the Password of the Database User Sysman (DB Control Repository Schema) (Doc ID 259379.1) 适用于： Enterprise Manager for Oracle Database - V
改变数据库用户sysman（该用户是DB Control Repository 的schema）密码的方法
参考原文：
How To Change the Password of the Database User Sysman (DB Control Repository Schema) (Doc ID 259379.1)
适用于：
Enterprise Manager for Oracle Database - Version 10.1.0.2 to 11.2.0.3 [Release 10.1 to 11.2]
Enterprise Manager for Oracle Database - Version 11.2.0.4 to 11.2.0.4 [Release 11.2]
Information in this document applies to any platform.
目的：
sysman的口令被加密存放在多个地方，因此，the Database Control (OMS and Agent)可以在不需要sysman密码的情况下可以访问database。
所以，当修改sysman口令的时候，新口令必须提供给the Database Control OMS and Agent.
如果新口令没有更新给the Database Control OMS and Agent， oms将不能访问数据库，并且在trace file中，你会注意到下面的错误：
2012-05-31 13:50:13,513 [PAFStartupThread] ERROR conn.ConnectionService verifyRepositoryEx.891 - Invalid Connection Pool. ERROR = ORA-01017: invalid username/password;
logon denied2012-05-31 13:50:20,717 [HTTPThreadGroup-4] ERROR conn.ConnectionService verifyRepositoryEx.891 - Invalid Connection Pool. ERROR = ORA-28000: the account is locked
2012-05-31 13:50:20,764 [HTTPThreadGroup-2] ERROR eml.OMSHandshake processFailure.806 - OMSHandshake failed.
(AGENT URL = https://uk-sno1-m018.uk-paper.group.wan:3938/emd/main)(ERROR = INTERNAL_ERROR)(CAUSE =java.sql.SQLException: ORA-01017: invalid username/password; logon denied
本文解释了在不断开Database 与 Database Control的情况下，修改数据库用户sysman密码的方法。
注意：Enterprise Manager 10g 已经进入扩展支持。oracle强烈建议升级你的环境到Enterprise Manager 11g or 12c。
Enterprise Manager 11g or 12c 现在是处于premier Support（翻译成：首先支持？）
范围：
所有使用Enterprise Manager DB Control 10g or 11g的数据库管理员。
细节：
注意：安装在 Windows 2008 / Vista上的 DB Control Release 10.2.0.3 及其更高版本，emctl 命令可能会失败，错误是"Permission Denied".该错误的解决方法，请见下面的文章：
Document 1164293.1 - Executing Any EMCTL Command on Windows 2008 / Vista Returns "Permission denied" Error
第一种情况：Database Release prior 10.2.0.4
sysman 这个用户是 the standalone repository of the Enterprise Manager DB Control 的 schema
为了确保你是在正确的数据库中修改了sysman口令，请检查环境变量ORACLE_SID是否被设置，环境变量 ORACLE_HOME 是否被设置，PATH是否包括 正确的 $ORACLE_HOME/bin
请修改sysman口令时严格遵守如下的步骤，否则，你的DB Control 将会运行异常。
1.停止 DB Control
On Unix
$ emctl stop dbconsole
On Windows
Stop the Windows Service OracleDBConsole
Or
Open a Command Window and type
C> emctl stop dbconsole
2.确认DB Control 已经被停止：
On Unix
$ emctl status dbconsole
On Windows
Check the status of the Windows Service OracleDBConsole
Or
Open a DOS Command Window and type
C> emctl status dbconsole
3. 使用dba 权限登陆sqlplus，执行如下的语句：
SQL> alter user sysman identified by
例子:
SQL> alter user sysman identified by rainbow ;
4.检查新密码能否登陆到db中
SQL> connect sysman/[@database_alias]
Example:
SQL> connect sysman/rainbow@DBRH
5.到$ORACLE_HOME/host_sid/sysman/config中
5.1 将emoms.properties 文件做一个备份emoms.properties.orig
5.2 编辑emoms.properties文件：
5.2.1 查找以下面内容开头的行：
oracle.sysman.eml.mntr.emdRepPwd=
以新密码（额外注：明文不带；号）替换掉加密后的值。
例子：oracle.sysman.eml.mntr.emdRepPwd=rainbow
5.2.2 找下面的行：
oracle.sysman.eml.mntr.emdRepPwdEncrypted=TRUE
用FALSE替换TRUE
6.重启 DB Control
On Unix
$ emctl start dbconsole
On Windows
Start the Windows Service OracleDBConsole
Or
Open a DOS Command Window and type
C> emctl start dbconsole
7.检查密码已经被加密：
查看$ORACLE_HOME/host_sid/sysman/config/emoms.properties文件
7.1 搜索以下面开头的行：
oracle.sysman.eml.mntr.emdRepPwd=
确认密码已经被加密
7.2 搜索以下面开头的行：
oracle.sysman.eml.mntr.emdRepPwdEncrypted=
确认该值是 TRUE
第二种情况： Database Release beginning 10.2.0.4
sysman 这个用户是 the standalone repository of the Enterprise Manager DB Control 的 schema
为了确保你是在正确的数据库中修改了sysman口令，请检查环境变量ORACLE_SID是否被设置，
对于 DB Control Release 11.2 以及更高版本来说，你需要将环境变量ORACLE_UNQNAME设置为数据库参数DB_UNIQUE_NAME 的值
你必须检查环境变量 ORACLE_HOME 是否被设置，PATH是否包括 正确的 $ORACLE_HOME/bin
请修改sysman口令时严格遵守如下的步骤，否则，你的DB Control 将会运行异常。
1.1.Stop the DB Control
On Unix
$ emctl stop dbconsole
On Windows
Stop the Windows Service OracleDBConsole
Or
Open a Command Window and type
C> emctl stop dbconsole
2. 确认 DB Control 已经被停止
On Unix
$ emctl status dbconsole
On Windows
Check the status of the Windows Service OracleDBConsole
Or
Open a DOS Command Window and type
C> emctl status dbconsole
3. 使用dba 权限登陆sqlplus，执行如下的语句：
SQL> alter user sysman identified by
4. 确认新密码：
SQL> connect sysman/[@database_alias]
5. 在database directory $ORACLE_HOME/bin目录中，执行：
On Unix
$ emctl setpasswd dbconsole
Provide the new SYSMAN password
On Windows
C>: emctl setpasswd dbconsole
Provide the new SYSMAN password
6.重启DB Control
On Unix
$ emctl start dbconsole
On Windows
Start the Windows Service OracleDBConsole
Or
Open a DOS Command Window and type
C>: emctl start dbconsole
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