Error While Running DBMS_SCHEDULER.RUN_JOB in Oacle 11g DB in LINUX ENvirnoment

Question

Dear ALL,
I have two separate Server, One is App. Server which is on WINDOWS 2008 and the DB server on LINUX. I'm created a job for Daily logical Backup of Database through EXP command on DB Server.
I have created DBMS_SCHEDULER.CREATE_JOB with JOB_ACTION /home/oracle/wms_dbdmp/auto_backup.sh the Location of .sh file which contain the following code
#!/bin/bash
exp test/test@orcl file=/home/oracle/wms_dbdmp/test.dmp log=/home/oracle/wms_dbdmp/test.log compress=N rows=Y grants=Y owner=(test) statistics=NONE
ECHO "Export done successfully..."
Exit 0
Now i created job successfully, but when i'm invoking this .sh file through DBMS_SCHEDULER>RUN_JOB('backup_01');
I'm facing error which are given as-
ORA-27369: job of type EXECUTABLE failed with exit code: Permission denied
ORA-06512: at "SYS.DBMS_ISCHED", line 185
ORA-06512: at "SYS.DBMS_SCHEDULER", line 486
ORA-06512: at line 1
I did this on WINDOWS Environment Successfully. I'm naive user for LINUX Envirnoment SO Please Guide me to rid off to this problem.
I will be very thank full to all...

Answer 1

I wrote the script as
#!/bin/bash
exp test/test@orcl file=/home/oracle/wms_dbdmp/test.dmp log=/home/oracle/wms_dbdmp/test.log compress=N rows=Y grants=Y owner=(test) statistics=NONE
exit 0
But it didn't work through procedure....how to invoke .sh file through db procedure...?