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今天在Oracle 11g的环境上制造数据碰到ORA-30009: CONNECT BY 操作内存不足,10g开始支持XML后,改为xmltable就可以了。

今天在Oracle 11g的环境上制造数据碰到ORA-30009: CONNECT BY 操作内存不足,10g开始支持XML后,,改为xmltable就可以了。

SQL> drop table t_range purge;

SQL> create table t_range (id number not null PRIMARY KEY, test_date date) partition by range (test_date)
    (
    partition p_2014_7 values less than (to_date('2014-08-01', 'yyyy-mm-dd')),
    partition p_2014_8 values less than (to_date('2014-09-01', 'yyyy-mm-dd')),
    partition p_2014_9 values less than (to_date('2014-10-01', 'yyyy-mm-dd')),
    partition p_2014_10 values less than (to_date('2014-11-01', 'yyyy-mm-dd')),
    partition p_2014_11 values less than (to_date('2014-12-01', 'yyyy-mm-dd')),
    partition p_2014_12 values less than (to_date('2015-01-01', 'yyyy-mm-dd')),
    partition p_max values less than (MAXVALUE)
  ) nologging;

SQL> insert /*+append */ into t_range  select rownum,
          to_date(to_char(sysdate - 120, 'J') +
                  trunc(dbms_random.value(0, 120)),
                  'J')
      from dual
    connect by level insert /*+append */ into t_range  select rownum,
                        *
第 1 行出现错误:
ORA-30009: CONNECT BY 操作内存不足
已用时间:  00: 00: 10.28
SQL> rollback;
回退已完成。

SQL> insert /*+append */ into t_range  select rownum,
          to_date(to_char(sysdate - 120, 'J') +
                  trunc(dbms_random.value(0, 120)),
                  'J')
      from xmltable('1 to 2000000');
已创建2000000行。
已用时间:  00: 00: 28.76
SQL> commit;

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