EXPERT RESPONSE
In Oracle 9i, there is no direct way to execute an operating system command directly from PL/SQL. But you can write an external file using Perl, C or C++, using sys.DBMS_PIPE.
If you are using Oracle 10g, you can use sys.DBMS_SCHEDULER. The script below shows an example of how to set up a dbms_scheduler to execute the command '/app/oracle/x.sh':
BEGIN
dbms_scheduler.create_job(job_name => 'myjob',
job_type => 'executable',
job_action => '/app/oracle/x.sh',
enabled => TRUE,
auto_drop => TRUE);
END;
/
exec dbms_scheduler.run_job('myjob');
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