Oracle数据库连接并访问Microsoft SQL Server数据库操作步骤

export CV_ASSUME_DISTID=RHEL8.0
export LANG=en_US

# This is a customized agent init file that contains the HS parameters
# that are needed for the Database Gateway for Microsoft SQL Server

#
# HS init parameters
#
HS_FDS_CONNECT_INFO=[192.168.227.134]:1433//UFDATA_999_2023
# alternate connect format is hostname/serverinstance/databasename
HS_FDS_TRACE_LEVEL=OFF
HS_FDS_RECOVERY_ACCOUNT=RECOVER
HS_FDS_RECOVERY_PWD=RECOVER

SID_LIST_LISTENER =
  (SID_LIST =
    (SID_DESC =
      (GLOBAL_DBNAME = orcl)
      (ORACLE_HOME = /u01/app/oracle/product/19.3.0/dbhome_1)
      (SID_NAME = orcl)
    )
      (SID_DESC=
         (SID_NAME=dg4msql)
         (ORACLE_HOME=/u01/app/oracle/product/19.3.0/dbhome_1)
         (PROGRAM=dg4msql)
      )
  )

LISTENER =
  (DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = TCP)(HOST = Java)(PORT = 1521))
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
    )
  )

# tnsnames.ora Network Configuration File: /u01/app/oracle/product/19.3.0/dbhome_1/network/admin/tnsnames.ora
# Generated by Oracle configuration tools.

LISTENER_ORCL =
  (ADDRESS = (PROTOCOL = TCP)(HOST = Java)(PORT = 1521))

ORCL =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = Java)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = orcl)
    )
  )

dg4msql  =
  (DESCRIPTION=
    (ADDRESS=(PROTOCOL=tcp)(HOST=Java)(PORT=1521))
    (CONNECT_DATA=(SID=dg4msql))
    (HS=OK)
  )

# dg4msql是在Oracle服务器上配置的ODBC数据源名称。
# sa和password是用于连接到SQL Server的凭据.
# gl_accvouch是SQL Server上访问的表的名称

CREATE DATABASE LINK hrpsv665
CONNECT TO "sa" IDENTIFIED BY "password"
USING 'dg4msql';

# 查询示例
SELECT * FROM gl_accvouch@hrpsv665;