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HomeDatabaseMysql TutorialOracle 数据库定时执行一些脚本

PROCEDURE Broken (job IN binary_integer, Broken IN boolean, next_date IN

DBMS_Job包的用法 
包含以下子过程:  
 
Broken()过程。 
change()过程。 
Interval()过程。 
Isubmit()过程。 
Next_Date()过程。 
Remove()过程。 
Run()过程。 
Submit()过程。 
User_Export()过程。 
What()过程。 
 
1、 
Broken()过程更新一个已提交的工作的状态,典型地是用来把一个已破工作标记为未破工作。 
这个过程有三个参数:job 、broken与next_date。 
 
PROCEDURE Broken (job       IN binary_integer, 
                  Broken    IN boolean, 
                  next_date IN date :=SYSDATE) 
 
job参数是工作号,它在问题中唯一标识工作。 
broken参数指示此工作是否将标记为破——TRUE说明此工作将标记为破,,而FLASE说明此工作将标记为未破。 
next_date参数指示在什么时候此工作将再次运行。此参数缺省值为当前日期和时间。 
 
 
 
2、 
Change()过程用来改变指定工作的设置。 
这个过程有四个参数:job、what 、next_date与interval。 
 
PROCEDURE Change (job        IN binary_integer, 
                  What       IN varchar2, 
                  next_date  IN date, 
                  interval   IN varchar2) 
 
此job参数是一个整数值,它唯一标识此工作。 
What参数是由此工作运行的一块PL/SQL代码块。 
next_date参数指示何时此工作将被执行。 
interval参数指示一个工作重执行的频度。 
 
 
 
3、 
Interval()过程用来显式地设置重执行一个工作之间的时间间隔数。 
这个过程有两个参数:job与interval。 
 
PROCEDURE Interval (job      IN binary_integer, 
                    Interval IN varchar2) 
 
job参数标识一个特定的工作。interval参数指示一个工作重执行的频度。 
 
 
 
4、 
ISubmit()过程用来用特定的工作号提交一个工作。 
这个过程有五个参数:job、what、next_date、interval与no_parse。 
 
PROCEDURE ISubmit (job       IN binary_ineger, 
                   What      IN varchar2, 
                   next_date IN date, 
                   interval  IN varchar2, 
                   no_parse  IN booean:=FALSE) 
 
这个过程与Submit()过程的唯一区别在于此job参数作为IN型参数传递且包括一个 
由开发者提供的工作号。如果提供的工作号已被使用,将产生一个错误。 
 
 
5、 
Next_Date()过程用来显式地设定一个工作的执行时间。这个过程接收两个参数:job与next_date。 
 
PROCEDURE Next_Date(job         IN binary_ineger, 
                    next_date   IN date) 
 
job标识一个已存在的工作。next_date参数指示了此工作应被执行的日期与时间。  

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