Generating ADDM Reports Automatically Every Hour?

I have been trying to develop a script for generating ADDM Reports every hour and save it in a directory on the server. I was able to develop a script to run the AWR Reports for every hour and save them in a directory, but I ran into troubled waters in the ADDM script.

Database Version : Oracle Database Enterprise Edition 10.2.0.3
OS : IBM AIX 5.3

I'm trying to debug the script below to generate ADDM reports on a per hour basis and save them in a folder as well as mail than to a particular entity.

########################################################################################
# Set up Oracle environment variables...
#------------------------------------------------------------------------------
export PATH=/usr/bin:/etc:/usr/sbin:/usr/ucb:/oracle/app/oracle/product/10.2.0/bin:/usr/bin/X11:/sbin:.:/oracle/app/oracle/product/10.2.0/bin
export ORACLE_HOME=/oracle/app/oracle/product/10.2.0
export ORACLE_SID=sarcotest2.ora
export ORAENV_ASK=NO

[Code].....

Initially, the script did return me an ADDM report, but the problem was that it generated the report for only a set of two snapshots (eg: 410110 and 410111). later when the snapshots advanced further, it still generated the same report for the same snapshots.

Now, it seems it have made several changes to the script in the declare and dbms_advisor section and the reports are not being generated anyway.

One problem I am facing is

ORA-13605: The specified task or object ADDM_UAT does not exist for the current user.
ORA-06512: at "SYS.PRVT_ADVISOR", line 2043
ORA-06512: at "SYS.DBMS_ADVISOR", line 560
ORA-06512: at line 1

It seems the task is not being generated at all in my user's schema.