Identify four uses of the Oracle Scheduler.（）

• A、 enables Oracle database to schedule which processes execute on which processors in a multiple CPU environment
• B、 enables Oracle database to do patches according to a DBA-defined schedule
• C、 enables you to schedule the execution of jobs based on time
• D、 enables you to execute jobs in a clustered environment
• E、 enables you to periodically execute operating systemscript files located on the same server as the database
• F、 enables you to create a job that makes use of saved programs and schedules
• G、 enables you to automate the management of the jobs that are created using the DBMS_JOB package