[系统运维]Linux Oracle启动OEM遇到的一些问题

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：

1. 删除系统管理员架构： emca -deconfig dbcontrol db -repos drop
2. 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