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HomeDatabaseMysql TutorialOracle 11g自动创建分区(INTERVAL PATITION)后的定时删分区

TRUCK_GPS_TRANS表利用oracle11的INTERVAL PATITION自动创建分区功能按天分区,现在要定时删除30天之前的分区数据,保持表里只有

TRUCK_GPS_TRANS表利用Oracle11的INTERVAL PATITION自动创建分区功能按天分区,现在要定时删除30天之前的分区数据,保持表里只有30天的业务数据,因为分区是动态创建,,无法获得分区名,所以要用到字典表user_objects ,存储过程为:

CREATE OR REPLACE PROCEDURE PROC_DROP_PATITION_GPS_TRANS(beforeDays NUMBER 
                                                        ) As
  v_SqlExec VARCHAR2(2000); 
  v_err_num NUMBER; 
  v_err_msg VARCHAR2(100); 


 
  cursor cursor_cpu_info_part is
    select t.SUBOBJECT_NAME partition_name
      from user_objects t
    where object_name = upper('TRUCK_GPS_TRANS')
      and t.OBJECT_TYPE = 'TABLE PARTITION'
      and t.GENERATED ='Y'                                --第一个分区也就是创建表时候创建的第一个分区是不允许被删除的,oracle报错,自动GENERATED 的分区是可以删除的
      and t.CREATED   record_cpu_info_oldpart cursor_cpu_info_part%rowType;


BEGIN
  open cursor_cpu_info_part;
  loop
    fetch cursor_cpu_info_part
      into record_cpu_info_oldpart;
    exit when cursor_cpu_info_part%notfound;
    --删除 TRUCK_GPS_TRANS表分区
    v_SqlExec := 'ALTER TABLE TRUCK_GPS_TRANS DROP PARTITION ' ||
                record_cpu_info_oldpart.partition_name;
    dbms_output.put_line('删除TRUCK_GPS_TRANS表分区=' || v_SqlExec);
    DBMS_Utility.Exec_DDL_Statement(v_SqlExec);
  end loop;
  close cursor_cpu_info_part;


EXCEPTION
  WHEN OTHERS THEN
    v_err_num := SQLCODE;
    v_err_msg := SUBSTR(SQLERRM, 1, 100);
    dbms_output.put_line('MALS_NM_DROP_PARTITION_PROC执行出现异常,错误码=' ||
                        v_err_num || '错误描述=' || v_err_msg);
END PROC_DROP_PATITION_GPS_TRANS;

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