How to schedule DB2 scripts to run

DB2 10.5 on Windows

How do most people schedule DB2 scripts to run?  I would like to be able to run certain maintenance scripts to run at 3:00 am nightly.  

I have created a batch file that calls another batch file that runs the DB2 cmd window.  The script in the second batch files creates another file of SQL commands that is then run.  The whole thing is run from the windows task scheduler but there are some issues.  

1.  I hate batch files and having to have 2 seems silly.

2.  The files run fine when I run them but fail more often than not when called from the windows task scheduler.  (various reasons not the focus of this post).  The problem is in running the 3rd script file.

3.  I have to put the username / password in the bat file in clear text.

So my question is how do most DB2 DBA's do this on windows?  SQL Server has a nice built-in job agent that makes it a breeze but DB2 does not seem to have that ability.

Is there an easier way to do this?  Am I missing something obvious that would make my life simpler?  Is there a third party application that will run as the SQL Server Agent with DB2?

Thank you!

Jim