webMethods Simple interval tasks and Complex repeating tasks are breaking.

Hi

I have a problem with webMethods schedulers.
They are breaking and showing their next run time as 0. For again to start the schedulers I need to restart the Integration server.
Instead of restarting the server, if I disable and enable the scheduler that schedule is working for one time and again stopping at 0. i.e; the next interval as 0 seconds.

The error logged at time of schedulers break time is :

java.sql.SQLException: Cannot issue commit in a nested connection when there is a pending operation in the parent connection.

IS version 7.1.2

Simple Interval repeating interval is like 5 seconds, 7 seconds and 10 seconds like wise… Many Thanks in advance.

Thanks
Hari