Question

尝试并行运行多个作业时获取以下异常。这种情况会间歇性地发生。

失败点是DBMS_SCHEDULER.run_job

SQL Exception ORA-27478: job "JOB_MIG_17602" is running
"ORA-06512: at "SYS.DBMS_ISCHED", line 196
ORA-06512: at "SYS.DBMS_SCHEDULER", line 48

工作描述：

作业调用更新表的存储过程。使用唯一作业名称创建的作业的不同实例调用相同的存储过程。

以下是运行作业的步骤：

DBMS_SCHEDULER.create_job(
    job_name                     => l_job_name,
    job_type                     => 'STORED_PROCEDURE',
    job_action                   => i_chunk_processor_name,
    number_of_arguments          => 2,
    enabled                      => FALSE,
    auto_drop                    => FALSE
);

DBMS_SCHEDULER.set_job_argument_value(job_name => l_job_name, argument_position => 1, argument_value => i_user_id);

DBMS_SCHEDULER.set_job_argument_value(job_name => l_job_name, argument_position => 2, argument_value => i_chunk_id);


DBMS_SCHEDULER.enable(l_job_name);

COMMIT;

DBMS_SCHEDULER.run_job(job_name => l_job_name, use_current_session => FALSE);

Answer 1

启用作业意味着它有资格执行。因此，如果调度程序协调员选择它并在之前启动它，那么您将进入＆＃34; run_job＆＃34;命令，然后你就会得到错误，例如

SQL> begin 2 DBMS_SCHEDULER.create_job( 3 job_name => 'XXX', 4 job_type => 'PLSQL_BLOCK', 5 job_action => 'begin dbms_lock.sleep(60); end;', 6 enabled => FALSE, 7 auto_drop => FALSE 8 ); 9 end; 10 / PL/SQL procedure successfully completed. SQL> exec DBMS_SCHEDULER.enable('XXX'); PL/SQL procedure successfully completed. -- I wait for a few seconds -- SQL> exec DBMS_SCHEDULER.run_job(job_name => 'XXX', use_current_session => FALSE); BEGIN DBMS_SCHEDULER.run_job(job_name => 'XXX', use_current_session => FALSE); END; * ERROR at line 1: ORA-27478: job "MCDONAC"."XXX" is running ORA-06512: at "SYS.DBMS_ISCHED", line 238 ORA-06512: at "SYS.DBMS_SCHEDULER", line 568 ORA-06512: at line 1

如果您启用它，则不需要显式的run_job请求。

SQL异常ORA-27478：job＆＃34; JOB_MIG_17602＆＃34;正在DBMS_SCHEDULER.run_job

1 个答案: