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Invoking an Oracle bat file from dbms_scheduler

Oracle Database Tips by Donald BurlesonSeptember 3,  2015


Oracle is the world's most robust and flexible database and Oracle provides a great internal scheduler in the dbms_scheduler package. 

There is an excellent overview of Oracle shell scripting best practices in book "Oracle Shell Scripting" by Jon Emmons, and see the book "Oracle Job Scheduling" for an overview of using dbms_scheduler for executing external shell scripts within Oracle.

Oracle's dbms_scheduler package allows you to "shell-out" to the OS environment, executing shell scripts and bat files, directly from within Oracle.  In UNIX and Linux, it's easy to run an OS script from dbms_scheduler.

Also, note that you can embed OS commands directly inside PL/SQL.

Ken Naim published this working script which invokes a Windows bat file from inside Oracle, using the dbms_scheduler syntax:

begin dbms_scheduler.drop_job (job_name=>'daily_backup'); end;
/
begin  dbms_scheduler.drop_program(program_name   => 'backup_database');
end;
/
begin  dbms_scheduler.drop_schedule(schedule_name =>
'daily_at_4am_except_monday'); end;


begin
  dbms_scheduler.create_schedule(
       schedule_name   => 'daily_at_4am_except_monday',
       repeat_interval => 'FREQ=DAILY; INTERVAL=1;
BYDAY=TUE,WED,THU,FRI,SAT,SUN; BYHOUR=4',
       comments        => 'schedule to run daily at 4am except on mondays');
  dbms_scheduler.create_program
    (  program_name   => 'backup_database',
       program_type   => 'EXECUTABLE',
       program_action => 'd:\oracle\product\admin\dw\scripts\backup_dw.bat >
nul',
       enabled        => TRUE,
       comments       => 'Backup dw database using rman and then backup rman
database via hot backup.'
    );

  dbms_scheduler.create_job (
    job_name=>'daily_backup',
    program_name =>'backup_database',
        schedule_name=> 'DAILY_AT_4AM_EXCEPT_MONDAY',
    enabled      => true,
        comments     => 'backs up the dw and rman databases daily at 4am
except on for mondays.'
  );
end;
/

select * from dba_scheduler_jobs

 

 


 

 

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