DBMS_JOB vs DBMS_SCHEDULER

Question

What is the difference between DBMS_JOB and DBMS_SCHEDULER ?

Answer 1

One difference to be aware of is that unlike DBMS_JOB, DBMS_SCHEDULER performs a commit, which makes it unsuitable for some uses. It is also rather cumbersome for simpler requirements. While DBMS_JOB will no longer be enhanced, it is unlikely to ever be desupported, as there must be thousands of systems that are using it and rely on the way it works, including not performing an implicit commit of the transaction from which it was called.

See this Ask Tom thread for more.