DBMS_SCHEDULER.CREATE_JOB

CREATE OR REPLACE PROCEDURE "SCOTT"."PRINT_NOW_TIME"
is
date_now_char varchar2(255);
begin
select to_char(sysdate,'yyyy/mm/dd HH:MI:SS') into date_now_char from dual;
dbms_output.put_line(date_now_char);
insert into date_time values(sysdate);
commit;
end;

 

BEGIN
DBMS_SCHEDULER.CREATE_JOB (
job_name          =>  'TIME_JOB',
job_action      =>  'PRINT_NOW_TIME',
job_type        =>  'STORED_PROCEDURE',
repeat_interval   =>  'FREQ=MINUTELY',
comments          =>  'Daily at noon');
END;
/

 

 

begin
dbms_scheduler.enable('TIME_JOB');
end;

实现每分钟执行一次'TIME_JOB',即每分钟把当前时间插入date_time表

下面是参考的一部分

ENABLE Procedure

This procedure enables a program, job, chain, window, database destination, external destination, file watcher, or group. When an object is enabled, its

enabled

attribute is set to

TRUE

. By default, jobs, chains, and programs are created disabled and database destinations, external destinations, file watchers, windows, and groups are created enabled.

If a job was disabled and you enable it, the Scheduler begins to automatically run the job according to its schedule. Enabling a disabled job also resets the job

RUN_COUNT

,

FAILURE_COUNT

and

RETRY_COUNT

columns in the

*_SCHEDULER_JOBS

data dictionary views.

Validity checks are performed before enabling an object. If the check fails, the object is not enabled, and an appropriate error is returned. This procedure does not return an error if the object was already enabled.

Syntax

DBMS_SCHEDULER.ENABLE (
name              IN VARCHAR2,
commit_semantics  IN VARCHAR2 DEFAULT 'STOP_ON_FIRST_ERROR');

Parameters

Table 128-57 ENABLE Procedure Parameters

Parameter	Description
name	The name of the Scheduler object being enabled. Can be a comma-delimited list of names. If a job class name is specified, then all the jobs in the job class are enabled. If a group name is specified, then the group is enabled, but the enabled state of the group members is unaffected.
commit_semantics	The commit semantics. The following types are supported: STOP_ON_FIRST_ERROR - The procedure returns on the first error and previous successful enable operations are committed to disk. This is the default. TRANSACTIONAL - The procedure returns on the first error and everything that happened before that error is rolled back. This type is only supported when enabling a job or a list of jobs. ABSORB_ERRORS - The procedure tries to absorb any errors and enable the rest of the jobs. It commits all the enable operations that were successful. If errors occur, you can query the view SCHEDULER_BATCH_ERRORS for details. This type is only supported when enabling a job or a list of jobs.

Table 128-10 Values for repeat_interval

Name	Description
FREQ	This specifies the type of recurrence. It must be specified. The possible predefined frequency values are YEARLY, MONTHLY, WEEKLY, DAILY, HOURLY, MINUTELY, and SECONDLY. Alternatively, specifies an existing schedule to use as a user-defined frequency.
INTERVAL	This specifies a positive integer representing how often the recurrence repeats. The default is 1, which means every second for secondly, every day for daily, and so on. The maximum value is 99.