postgresql oracle_fdw访问oracle数据1、环境准备 --下载安装包： https://github.com/laurenz/oracle_fdw/releases --下载安装oracle client： oracle-instantclient12.2-basic-12.2.0.1.0-1.x86_64.rpm oracle-instantclient12.2-devel-12.2.0.1.0-1.x86_64.rpm oracle-instantclient12.2-odbc-12.2.0.1.0-2.x86_64.rpm oracle-