DBMS_JOB.SUBMIT 建立job定時排程

yewushang發表於2014-05-05
MIT

SUBMIT Procedure

This procedure submits a new job. It chooses the job from the sequence sys.jobseq.

Syntax 

DBMS_JOB.SUBMIT ( 
   job       OUT BINARY_INTEGER,
   what      IN  VARCHAR2,
   next_date IN  DATE DEFAULT sysdate,
   interval  IN  VARCHAR2 DEFAULT 'null',
   no_parse  IN  BOOLEAN DEFAULT FALSE,
   instance  IN  BINARY_INTEGER DEFAULT any_instance,
   force     IN  BOOLEAN DEFAULT FALSE);

Parameters

Table 78-9 SUBMIT Procedure Parameters

Parameter Description

job

Number of the job being run.

what

PL/SQL procedure to run.

next_date

Next date when the job will be run.

interval

Date function that calculates the next time to run the job. The default is NULL. This must evaluate to a either a future point in time or NULL.

no_parse

A flag. The default is FALSE. If this is set to FALSE, then Oracle parses the procedure associated with the job. If this is set to TRUE, then Oracle parses the procedure associated with the job the first time that the job is run.

For example, if you want to submit a job before you have created the tables associated with the job, then set this to TRUE.

instance

When a job is submitted, specifies which instance can run the job.

force

If this is TRUE, then any positive integer is acceptable as the job instance. If this is FALSE (the default), then the specified instance must be running; otherwise the routine raises an exception.


Usage Notes

  • You must issue a COMMIT statement immediately after the statement.

  • The parameters instance and force are added for job queue affinity. Job queue affinity gives users the ability to indicate whether a particular instance or any instance can run a submitted job.

Example

This submits a new job to the job queue. The job calls the procedure DBMS_DDL.ANALYZE_OBJECT to generate optimizer statistics for the table DQUON.ACCOUNTS. The statistics are based on a sample of half the rows of the ACCOUNTS table. The job is run every 24 hours: 

VARIABLE jobno number;
BEGIN
   DBMS_JOB.SUBMIT(:jobno, 
      'dbms_ddl.analyze_object(''TABLE'',
      ''DQUON'', ''ACCOUNTS'', 
      ''ESTIMATE'', NULL, 50);' 
      SYSDATE, 'SYSDATE + 1');
   COMMIT;
END;
/
Statement processed.
print jobno
JOBNO
----------
14144

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