zoukankan      html  css  js  c++  java
  • Oracle Data Pump不使用直接路径加载的场景

    Situations in Which Direct Path Load Is Not Used

    If any of the following conditions exist for a table, then Data Pump uses external tables rather than direct path to load the data for that table:

    • A global index on multipartition tables exists during a single-partition load. This includes object tables that are partitioned.

    • A domain index exists for a LOB column.

    • A table is in a cluster.

    • There is an active trigger on a preexisting table.

    • Fine-grained access control is enabled in insert mode on a preexisting table.

    • A table contains BFILE columns or columns of opaque types.

    • A referential integrity constraint is present on a preexisting table.

    • A table contains VARRAY columns with an embedded opaque type.

    • The table has encrypted columns.

    • The table into which data is being imported is a preexisting table and at least one of the following conditions exists:

      • There is an active trigger

      • The table is partitioned

      • Fine-grained access control is in insert mode

      • A referential integrity constraint exists

      • A unique index exists

    • Supplemental logging is enabled and the table has at least one LOB column.

    • The Data Pump command for the specified table used the QUERYSAMPLE, or REMAP_DATA parameter.

    • A table contains a column (including a VARRAY column) with a TIMESTAMP WITH TIME ZONE datatype and the version of the time zone data file is different between the export and import systems.

  • 相关阅读:
    Python笔记:高阶函数
    linux C生成UUID的方法
    c语言连接mysql完整演示
    linux下C语言连接mysql数据库演示(在控制台编译的)
    mysql版本问题,导致的mysql.user表下面的字段变成了authentication_string
    选择排序算法
    汉诺塔递归实现
    操作系统复习第一章
    二叉树的基本操作
    字符串的模式匹配算法
  • 原文地址:https://www.cnblogs.com/gispf/p/3753456.html
Copyright © 2011-2022 走看看