In Oracle database, you can view defined scheduled tasks through the following methods: query the DBA_SCHEDULER_JOBS table to obtain basic task information; query the DBA_SCHEDULER_JOB_LOG view to obtain execution history details; query the DBA_SCHEDULER_JOB_RUN_DETAILS view to obtain each task execution Detailed data; query the V$ACTIVE_SCHEDULER_JOBS view to display the currently executing tasks.
Oracle database scheduled task viewing method
In the Oracle database, you can view the defined scheduled tasks through the following methods:
1. DBA_SCHEDULER_JOBS table
DBA_SCHEDULER_JOBS
The table stores the basic information of all defined scheduled tasks, including task name, status, last execution time, etc.
SELECT JOB_NAME, ENABLED, LAST_START_DATE, NEXT_START_DATE, JOB_CLASS, DESCRIPTION FROM DBA_SCHEDULER_JOBS;
2. DBA_SCHEDULER_JOB_LOG view
DBA_SCHEDULER_JOB_LOG
The view provides detailed information about the execution history of scheduled tasks, including execution time, execution results, error information, etc.
SELECT JOB_NAME, LOG_DATE, STATUS, MESSAGE, ELAPSED_TIME FROM DBA_SCHEDULER_JOB_LOG;
3. DBA_SCHEDULER_JOB_RUN_DETAILS view
DBA_SCHEDULER_JOB_RUN_DETAILS
The view provides more detailed information about the execution of each scheduled task, including the unit of work executed, the resources used, etc.
SELECT JOB_NAME, RUN_DATE, COMPLETION_STATUS, WORKUNIT_NAME, CPU_TIME, ELAPSED_TIME FROM DBA_SCHEDULER_JOB_RUN_DETAILS;
4. V$ACTIVE_SCHEDULER_JOBS view
V$ACTIVE_SCHEDULER_JOBS
The view displays the scheduled tasks currently being executed or queued for execution.
SELECT JOB_NAME, JOB_CLASS, START_DATE, PID, STATUS, LAST_CALL_ET, TIME_REMAINING FROM V$ACTIVE_SCHEDULER_JOBS;
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