实验环境

OS

[root@mogdb-01 ~]# lsb_release -a
LSB Version:	:core-4.1-amd64:core-4.1-noarch:cxx-4.1-amd64:cxx-4.1-noarch:desktop-4.1-amd64:desktop-4.1-noarch:languages-4.1-amd64:languages-4.1-noarch:printing-4.1-amd64:printing-4.1-noarch
Distributor ID:	CentOS
Description:	CentOS Linux release 7.6.1810 (Core) 
Release:	7.6.1810
Codename:	Core

DB

stone=> select version();
                                                                     version                                                                      
--------------------------------------------------------------------------------------------------------------------------------------------------
 (MogDB 3.0.0 build 25635e6b) compiled at 2022-07-08 22:28:37 commit 0 last mr   on x86_64-unknown-linux-gnu, compiled by g++ (GCC) 7.3.0, 64-bit
(1 row)

背景

1、Oracle迁移至MogDB 2、Oracle代码中使用了DBLink 3、远端与本地相关Oracle库均已迁至MogDB