将sysman以及dbsnmp两个用户解锁。
SQL> alter user sysman account unlock identified by sys;
User altered.
SQL> alter user dbsnmp account unlock identified by sys;
User altered.
问题：SYSMAN already exists…
Mar 9, 2022 8:53:09 PM oracle.sysman.emcp.EMReposConfig createRepository
CONFIG: ORA-20001: SYSMAN already exists..
ORA-06512: at line 17
oracle.sysman.assistants.util.sqlEngine.SQLFatalErrorException: ORA-20001: SYSMAN already exists..
ORA-06512: at line 17
at oracle.sysman.assistants.util.sqlEngine.SQLEngine.executeImpl(SQLEngine.java:1650)
at oracle.sysman.assistants.util.sqlEngine.SQLEngine.executescript(SQLEngine.java:1000)
at oracle.sysman.assistants.util.sqlEngine.SQLPlusEngine.executescript(SQLPlusEngine.java:339)
at oracle.sysman.assistants.util.sqlEngine.SQLPlusEngine.executescript(SQLPlusEngine.java:380)
at oracle.sysman.emcp.EMReposConfig.createRepository(EMReposConfig.java:510)
at oracle.sysman.emcp.EMReposConfig.invoke(EMReposConfig.java:228)
at oracle.sysman.emcp.EMReposConfig.invoke(EMReposConfig.java:157)
at oracle.sysman.emcp.EMConfig.perform(EMConfig.java:253)
at oracle.sysman.emcp.EMConfigAssistant.invokeEMCA(EMConfigAssistant.java:589)
at oracle.sysman.emcp.EMConfigAssistant.performConfiguration(EMConfigAssistant.java:1448)
at oracle.sysman.emcp.EMConfigAssistant.statusMain(EMConfigAssistant.java:573)
at oracle.sysman.emcp.EMConfigAssistant.main(EMConfigAssistant.java:521)
Mar 9, 2022 8:53:09 PM oracle.sysman.emcp.EMReposConfig invoke
SEVERE: Error creating the repository
解决方法：
删除系统管理员架构： emca -deconfig dbcontrol db -repos drop重新创建：emca -config dbcontrol db -repos create
关闭和启动用emctl start/stop dbconsole命令
## 启动
emctl start dbconsole
## 关闭
emctl stop dbconsole
## 查看
emctl status dbconsole
