今天客户机器由于意外down机,数据库能正常启动,但em不知道什么原因就启动不了,不得不重建,重建过程中报 em 无法对所有 EM 相关帐户解锁错误,导致重建em失败,在删除过程中用的了好几种方法,重建都不成功,最终以metalink id 278100.1的option 4删除方法,重建成功。

Option 4. Delete DB Control Repository Objects Manually
Step 1: Drop AQ related objects in the SYSMAN schema
Logon SQLPLUS as user SYSMAN
SQL> exec DBMS_AQADM.DROP_QUEUE_TABLE(queue_table=>'MGMT_NOTIFY_QTABLE',force =>TRUE);

Step 2: Drop the DB Control Repository Objects
Logon SQLPLUS as user SYS or SYSTEM, and drop the sysman account and management objects:
SQL> SHUTDOWN IMMEDIATE;
SQL> STARTUP RESTRICT;
SQL> EXEC sysman.emd_maintenance.remove_em_dbms_jobs;
SQL> EXEC sysman.setEMUserContext('',5);
SQL> REVOKE dba FROM sysman;
SQL> DECLARE
CURSOR c1 IS
SELECT owner, synonym_name name
FROM dba_synonyms
WHERE table_owner = 'SYSMAN';
BEGIN
FOR r1 IN c1 LOOP
IF r1.owner = 'PUBLIC' THEN
EXECUTE IMMEDIATE 'DROP PUBLIC SYNONYM '||r1.name;
ELSE
EXECUTE IMMEDIATE 'DROP SYNONYM '||r1.owner||'.'||r1.name;
END IF;
END LOOP;
END;
/
SQL> DROP USER mgmt_view CASCADE;
SQL> DROP ROLE mgmt_user;
SQL> DROP USER sysman CASCADE;
SQL> ALTER SYSTEM DISABLE RESTRICTED SESSION;

SQL> drop public synonym MGMT_TARGET_BLACKOUTS;
SQL> drop public synonym SETEMVIEWUSERCONTEXT;