从 oracle 数据库到 sqlite 数据库,有没有什么好的办法 - V2EX
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从 oracle 数据库到 sqlite 数据库,有没有什么好的办法

  •  
  •   sdushn 2018-08-08 10:41:33 +08:00 4011 次点击
    这是一个创建于 2669 天前的主题,其中的信息可能已经有所发展或是发生改变。
    网上的工具是收费的,oracleToSqlite,有没有什么好办法导入呢
    10 条回复    2018-08-21 15:38:54 +08:00
    lihongjie0209
        1
    lihongjie0209  
       2018-08-08 11:34:22 +08:00
    导出 csv, 再导入 sqlite?
    sdushn
        2
    sdushn  
    OP
       2018-08-08 11:49:08 +08:00 via Android
    @lihongjie0209 正在用这个方法数据量大,导入太慢了
    lihongjie0209
        3
    lihongjie0209  
       2018-08-08 11:57:13 +08:00   1
    Situations Where A Client/Server RDBMS May Work Better

    High Concurrency

    SQLite supports an unlimited number of simultaneous readers, but it will only allow one writer at any instant in time. For many situations, this is not a problem. Writer queue up. Each application does its database work quickly and moves on, and no lock lasts for more than a few dozen milliseconds. But there are some applications that require more concurrency, and those applications may need to seek a different solution.


    看起来不支持并行写入, 不管什么工具都没办法提速吧
    sdushn
        4
    sdushn  
    OP
       2018-08-08 13:30:08 +08:00
    @lihongjie0209 是啊,似乎是不能提速的,比较尴尬啊
    LightLolo
        5
    LightLolo  
       2018-08-08 13:53:20 +08:00   1
    只是数据抽取的话,试试数据抽取工具么? KETTLE 这种。
    jydeng
        6
    jydeng  
       2018-08-08 14:16:01 +08:00   1
    LS+1
    rockyou12
        7
    rockyou12  
       2018-08-08 14:19:23 +08:00
    其实我很好奇既然数据量很大,为什么还要换成 sqlite 这种单文件的数据库(‘◇’)?
    lihongjie0209
        8
    lihongjie0209  
       2018-08-08 14:29:51 +08:00
    @LightLolo #5 数据库不支持并行写入的话, 使用其他工具也没办法
    sdushn
        9/span>
    sdushn  
    OP
       2018-08-08 16:50:28 +08:00
    @LightLolo 数据已经抽取出来了,只是导入稍慢

    @rockyou12 在调试程序,手动同步服务端和客户端数据(笑哭)

    @lihongjie0209 已经导入进去了,导入了几个小时的样子,哈哈
    sdushn
        10
    sdushn  
    OP
       2018-08-21 15:38:54 +08:00
    最后采用了最笨的办法,导出后再导入,弄完之后自己有写了 java 小脚本,两边数据库连起来,一边读,一边写就好了
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