作 恢复可选表清单，可指定条件恢复部分数据，可恢复到指定增备日期 ## Greenplum集群之间数据传输 ## Transfer命令 基于gpfdist和外部表实现，比基于命名管道的gptransfer更稳定高效 • 两个集群之间必须互相网络连通 集群之间无需ssh互信 • 源端与目标端对象名称可不一致 • 条件源端过滤，降低带条件场景的网络压力 • 源端可以是视图，自动识别是否使用快速模式 命令可部署在可在集群外执行 自动识别低速模式，快速模式和全速模式 • 可指定并发数(同时多张表传输)，可指定编码Encoding，解决特殊的乱码问题 命令简单易用——单命令无需部署，参数基本保持与gptransfer一致，自动完成全部必要的准备工作

Installing the Greenplum Database Software. - The gptransfer utility is no longer included; use gpcopy for all functionality that was provided with gptransfer. - The gp_fault_strategy system table is no longer

Installing the Greenplum Database Software. - The gptransfer utility is no longer included; use gpcopy for all functionality that was provided with gptransfer. - The gp_fault_strategy system table is no longer

Installing the Greenplum Database Software. - The gptransfer utility is no longer included; use gpcopy for all functionality that was provided with gptransfer. - The gp_fault_strategy system table is no longer

Installing the Greenplum Database Software. - The gptransfer utility is no longer included; use gpcopy for all functionality that was provided with gptransfer. - The gp_fault_strategy system table is no longer

Installing the Greenplum Database Software. - The gptransfer utility is no longer included; use gpcopy for all functionality that was provided with gptransfer. - The gp_fault_strategy system table is no longer

如果要关闭转义功能，可以使用`ESCAPE 'OFF'`，这样，文本中的所有字符就表现为原本的值，不过，建议不要这么做，尤其是中文环境，没有转义根本无法正常工作，最早的`gptransfer`工具就是这么做的，根本用不了。 ## 字符编码 字符编码系统，是将字符集中的符号和一堆数字进行一对一映射，以便于传输和存储。GP服务端，虽然也支持多种编码集，比如ISO8859系列的单 the writable # gpfdist side. Need a better way to coordinate this. time.sleep(self.__wait_time) 在gptransfer的Python代码中，充斥着各种sleep操作，因为无法精确控制命名管道的状态，导致的结果是，一个表中哪怕只有几条记录，也需要花费至少十多秒来完成数据的传输。在不追求极致性能的场景，很多时候

Installing the Greenplum Database Software. The gptransfer utility is no longer included; use gpcopy for all functionality that was provided with gptransfer. The gp_fault_strategy system table is no longer

Installing the Greenplum Database Software. The gptransfer utility is no longer included; use gpcopy for all functionality that was provided with gptransfer. The gp_fault_strategy system table is no longer

Installing the Greenplum Database Software. The gptransfer utility is no longer included; use gpcopy for all functionality that was provided with gptransfer. The gp_fault_strategy system table is no longer