Hi Team,
We recently upgraded from apex 5.1 to 20.1.
I have a page process which is executing a PLSQL package.
Inside the package it's processing around 8k records. Once I click on process button, process is called as expected and it started processing the rows. Each time, exactly after 15 mins the process completes in error without mentioning what is the error.

I even enabled debug and searched there also and no information at all. I verified all the session idle, timeout and maximum length parameters at application level and instance level all are pointed to 3600 seconds.
This was not happening in our 5.1(completes after 17mins) version of apex which is available in another instance.
Thanks in advance.
Regards,
Infantraj