重新配置oralce dbconsole
emca -repos drop --删除一个EM资料库
SQL> drop user sysman cascade; --删除用户及相关权限
SQL> drop role MGMT_USER;
SQL> drop user MGMT_VIEW cascade;
SQL> drop public synonym MGMT_TARGET_BLACKOUTS;
SQL> drop public synonym SETEMVIEWUSERCONTEXT;
emca -repos create --新建一个EM资料库
set oracle_hostname=localhost
set oracle_orcl = orcl
emca -config dbcontrol db --配置数据库的 Database Control
emctl start dbconsole