DBMS_JOB vs DBMS_SCHEDULER

Question

What is the difference between DBMS_JOB and DBMS_SCHEDULER ?

Answer 1

Listed next are some of the benefits that DBMS_SCHEDULER has over cron:

• Can make the execution of a job dependent on the completion of another job

• Robust resource balancing and flexible scheduling features

• Can run jobs based on a database event

• DBMS_SCHEDULER syntax works the same regardless of the operating system

• Can run status reports using the data dictionary

• If working in clustered environment, no need to worry about synchronizing multiple cron tables for each node in the cluster

Listed next are some of the advantages of using cron:

• Easy to use, simple, tried and true

• Almost universally available on all Linux/Unix boxes; for the most part, runs nearly identically regardless of the Linux/Unix platform (yes, there are minor differences)

• Database agnostic; operates independently of the database and works the same regardless of the database vendor or database version

• Works whether the database is available or not