Scheduling Export Job - 10g R2

Hi,
We would like to have our export run on a daily basis. However, the export dump file should be overwritten and not newly created. Does somebody have a suggestion or script that creates this job? This is independent from our regular backups.
Thank you!

In unix,
First create a shell executable file
#!/bin/ksh
ORACLE_BASE=/u01/app/oracle
ORACLE_SID=prod
ORACLE_HOME=/u01/app/oracle/oracle/product/10.2.0/db_1
export ORACLE_BASE ORACLE_SID ORACLE_HOME
LANG=C;export LANG
PATH=/u01/app/oracle/oracle/product/10.2.0/db_1/bin:/usr/kerberos/bin:/usr/local/bin:/bin:/usr/bin:/usr/X11R6/bin:/home/oracle/jdk1.6.0/bin:/home/oracle/bin:.
export PATH
CLASSPATH=/home/oracle/jdk1.6.0/lib:.
export CLASSPATH
/u01/app/oracle/oracle/product/10.2.0/db_1/bin/exp jj/jj tables=tab5 file=/u04/expdp_dir/tab5.dmp
exit
now make the file executable,
chmod 755 /u04/expdp_dir/expdb.sh
Now create a job in the scheduler
begin
dbms_scheduler.create_job
(job_name=> 'daily_exp',
job_type =>'executable',
job_action =>'/u04/expdp_dir/expdb.sh',
repeat_interval =>'FREQ=DAILY;BYHOUR=19',
enabled=>TRUE);
end;
Well you will have to change the parameters as ur wish....
rgds,
Jj

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