We usually schedule expdp jobs in a standard shell script.  But the same can be achieved using dbms_scheduler utility also.

Below are steps for scheduling expdp job.

Here we will schedule a full expdp backup of the database, which will run daily at 11:30 HRS.

1. First, prepare the parfile

cat expdp_tab.par

userid=system/oracle
dumpfile=FULL_DB.dmp
logfile=FULL_DB.log
directory=T
full=y

2. Now create the credential for os user:(oracle)

BEGIN
dbms_credential.create_credential (
CREDENTIAL_NAME => 'ORACLEOSUSER',
USERNAME => 'oracle',
PASSWORD => 'oracle@123',
DATABASE_ROLE => NULL,
WINDOWS_DOMAIN => NULL,
COMMENTS => 'Oracle OS User',
ENABLED => true
);
END;

If you are using any user other than oracle, then create a credential using that Userid and password.

3. Now create the job:

Begin 
Dbms_scheduler.create_job 
( 
job_name => 'BACKUP_FULLDB', 
job_type => 'EXTERNAL_SCRIPT', 
job_action => '/oracle/app/oracle/product/12.1.0/dbhome_1/bin/expdp parfile=/export/home/oracle/expdp_tab.par', 
start_date => sysdate, 
Repeat_interval =>'FREQ=DAILY;BYHOUR=11; BYMINUTE=25',
enabled => TRUE,
credential_name=>'ORACLEOSUSER'); 
end; 
/ 

Above job is scheduled to run daily at 11:30 hrs

4. Monitor the job status and log:

set pagesize 299
set lines 299
col JOB_NAME for a24
col actual_start_date for a56
col RUN_DURATION for a34
select job_name,status,actual_start_date,run_duration from DBA_SCHEDULER_JOB_RUN_DETAILS where job_name='&JOB_NAME';


select * from DBA_SCHEDULER_JOB_LOG where job_name='&JOB_NAME';

SEE ALSO – Scheduler jobs in oracle

SEE ALSO – Useful crsctl commands

SEE ALSO – Useful srvctl commands