检查一个数据库的alert日志时，查看一些job报错，由于是自己的测试库，考虑把job停止掉。但是遇到如下错误：
sys@im1>exec DBMS_JOB.broken(275,true);
BEGIN DBMS_JOB.broken(275,true); END;
*
ERROR at line 1:
ORA-23421: job number 275 is not a job in the job queue
ORA-06512: at "SYS.DBMS_SYS_ERROR", line 86
ORA-06512: at "SYS.DBMS_IJOB", line 529
ORA-06512: at "SYS.DBMS_JOB", line 245
ORA-06512: at line 1
查看了资料说：不是job的owner的用户delete,remove，broken 一个job时，会报错:ORA-23421: job number XXXX is not a job in the job queue
只有job的owner才能够对job进行修改变更。
但是查询找到job的owner priv_user
sys@im1>select job, what, log_user, priv_user,broken from dba_jobs where job=275;
JOB WHAT LOG_USER PRIV_USER B
---------- ---------------------------------------- ---------- ---------- -
275 WEB_SMS.cleanAppBuffer; SYSTEM SYSTEM N
2.以上面的sql语句priv_user登录数据库
system@im1>exec DBMS_JOB.broken(295,false);
PL/SQL procedure successfully completed.
3.执行如下语句：
system@im1>exec DBMS_JOB.broken(295,true);
PL/SQL procedure successfully completed.
system@im1>commit;
Commit complete.
system@im1>select job, log_user, priv_user,broken from dba_jobs where job in (295);
JOB LOG_USER PRIV_USER B
---------- ---------- ---------- -
295 SYSTEM SYSTEM Y
另一种方法是以sys用户：
sys@im1>exec DBMS_IJOB.broken(275,true);
PL/SQL procedure successfully completed.
sys@im1>select job, what, log_user, priv_user,broken from dba_jobs where job=275;
JOB WHAT LOG_USER PRIV_USER B
---------- ---------------------------------------- ---------- ---------- -
275 WEB_SMS.cleanAppBuffer; SYSTEM SYSTEM Y
sys@im1>exec DBMS_IJOB.broken(275,false);
PL/SQL procedure successfully completed.
sys@im1>select job, what, log_user, priv_user,broken from dba_jobs where job=275;
JOB WHAT LOG_USER PRIV_USER B
---------- ---------------------------------------- ---------- ---------- -
275 WEB_SMS.cleanAppBuffer; SYSTEM SYSTEM N
尝试以system用户执行命令此命令，会报错：
system@im1>exec DBMS_IJOB.broken(295,false);
BEGIN DBMS_IJOB.broken(295,false); END;
*
ERROR at line 1:
ORA-06550: line 1, column 7:
PLS-00201: identifier 'DBMS_IJOB.BROKEN' must be declared
ORA-06550: line 1, column 7:
PL/SQL: Statement ignored
参考文章：
DBMS_JOB Remove Procedure Fails With ORA-23421 [ID 452864.1]
ORA-23421 OR ORA-03421 TRYING TO ALTER A JOB [ID 1029977.6]
ORA-23421: job number is not a job in the job queue when dropping an existing job [ID 1214884.1]
最后一篇文章介绍当job$的索引INDEX I_JOB_JOB 损坏，也会导致此错误，对索引进行重建即可！
