多项选择题

Which DBMS_SCHEDULER procedure（s） can be used to alter an existing job？（）

A. SET_ATTRIBUTE_NULL
B. ALTER_JOB
C. ALTER_JOB_PARAMETERS
D. ALTER
E. SET_ATTRIBUTE

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单项选择题

A. Fixed schedule
B. Inline schedule
C. Stored schedule
D. Hard-coded schedule
E. None of the above

多项选择题

A. DBA_SCHEDULER_JOB_RUN_DETAILS
B. DBA_SCHEDULER_RUNNING_JOBS
C. DBA_SCHEDULER_CURRENT_JOBS
D. DBA_SCHEDULER_JOBS
E. DBA_SCHEDULER_EXECUTING_JOBS

单项选择题

A. FREQ
B. BYHOUR
C. RUNDATE
D. INTERVAL
E. BYMINUTE