使用Oracle透明网关(Gataway)操作SQL Server

文章目录

一、安装Oracle及SQLServer
二、安装Oracle透明网关gateway
三、配置透明网关gateway
四、创建dblink
五、总结

一、安装Oracle及SQLServer

数据库安装步骤忽略，保证网络端口可以正常通信即可。

二、安装Oracle透明网关gateway

1、next

2、输入inventory绝对路径以及用户组

3、输入安装绝对路径

4、选择安装的网关

5、配置目标SQL Server 实例信息，该步骤会自动生成相应文件

6、使用root用户按照顺序执行以下脚本

[root@oracle ~]# /data/oraInventory/orainstRoot.sh
Changing permissions of /data/oraInventory.
Adding read,write permissions for group.
Removing read,write,execute permissions for world.Changing groupname of /data/oraInventory to dba.
The execution of the script is complete.
[root@oracle ~]# /data/oracle/product/11.2.0/db_1/root.sh
Running Oracle 11g root.sh script...The following environment variables are set as:ORACLE_OWNER= oracleORACLE_HOME=  /data/oracle/product/11.2.0/db_1Enter the full pathname of the local bin directory: [/usr/local/bin]: Copying dbhome to /usr/local/bin ...Copying oraenv to /usr/local/bin ...Copying coraenv to /usr/local/bin ...Creating /etc/oratab file...
Entries will be added to the /etc/oratab file as needed by
Database Configuration Assistant when a database is created
Finished running generic part of root.sh script.
Now product-specific root actions will be performed.
Finished product-specific root actions.

7、安装完成

8、installd products查看已安装信息

三、配置透明网关gateway

[oracle@oracle db_1]$ cat $ORACLE_HOME/dg4msql/admin/initdg4msql.ora
# 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
#
##仅需要调整该变量，端口默认1433可忽略，否则在hostname后配置，后面跟SQLServer实例名以及SQLServer库名
HS_FDS_CONNECT_INFO=192.168.1.10/MSSQLSERVER/test
# alternate connect format is hostname/serverinstance/databasename
HS_FDS_TRACE_LEVEL=OFF
HS_FDS_RECOVERY_ACCOUNT=RECOVER
HS_FDS_RECOVERY_PWD=RECOVER

以下配置可以参考$ORACLE_HOME/dg4msql/admin/listener.ora.sample、$ORACLE_HOME/dg4msql/admin/tnsnames.ora.sample

[oracle@oracle db_1]$ cat $ORACLE_HOME/network/admin/listener.ora
# listener.ora Network Configuration File: /data/oracle/product/11.2.0/db_1/network/admin/listener.ora
# Generated by Oracle configuration tools.LISTENER =(ADDRESS_LIST=(ADDRESS=(PROTOCOL=tcp)(HOST=localhost)(PORT=1521)))SID_LIST_LISTENER=(SID_LIST=(SID_DESC=(SID_NAME=dg4msql)(ORACLE_HOME=/data/oracle/product/11.2.0/db_1)(PROGRAM=dg4msql)))ADR_BASE_LISTENER = /data/oracle

重启监听

[oracle@oracle ~]$  lsnrctl stopLSNRCTL for Linux: Version 11.2.0.1.0 - Production on 30-JUN-2020 08:51:39Copyright (c) 1991, 2009, Oracle.  All rights reserved.Connecting to (ADDRESS=(PROTOCOL=tcp)(HOST=localhost)(PORT=1521))
The command completed successfully
[oracle@oracle ~]$  lsnrctl startLSNRCTL for Linux: Version 11.2.0.1.0 - Production on 30-JUN-2020 08:51:48Copyright (c) 1991, 2009, Oracle.  All rights reserved.Starting /data/oracle/product/11.2.0/db_1/bin/tnslsnr: please wait...TNSLSNR for Linux: Version 11.2.0.1.0 - Production
System parameter file is /data/oracle/product/11.2.0/db_1/network/admin/listener.ora
Log messages written to /data/oracle/diag/tnslsnr/oracle/listener/alert/log.xml
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=oracle)(PORT=1521)))Connecting to (ADDRESS=(PROTOCOL=tcp)(HOST=localhost)(PORT=1521))
STATUS of the LISTENER
------------------------
Alias                     LISTENER
Version                   TNSLSNR for Linux: Version 11.2.0.1.0 - Production
Start Date                30-JUN-2020 08:51:48
Uptime                    0 days 0 hr. 0 min. 0 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Listener Parameter File   /data/oracle/product/11.2.0/db_1/network/admin/listener.ora
Listener Log File         /data/oracle/diag/tnslsnr/oracle/listener/alert/log.xml
Listening Endpoints Summary...(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=oracle)(PORT=1521)))
Services Summary...
Service "dg4msql" has 1 instance(s).Instance "dg4msql", status UNKNOWN, has 1 handler(s) for this service...
The command completed successfully
[oracle@oracle ~]$  lsnrctl statusLSNRCTL for Linux: Version 11.2.0.1.0 - Production on 30-JUN-2020 08:53:39Copyright (c) 1991, 2009, Oracle.  All rights reserved.Connecting to (ADDRESS=(PROTOCOL=tcp)(HOST=localhost)(PORT=1521))
STATUS of the LISTENER
------------------------
Alias                     LISTENER
Version                   TNSLSNR for Linux: Version 11.2.0.1.0 - Production
Start Date                30-JUN-2020 08:51:48
Uptime                    0 days 0 hr. 1 min. 50 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Listener Parameter File   /data/oracle/product/11.2.0/db_1/network/admin/listener.ora
Listener Log File         /data/oracle/diag/tnslsnr/oracle/listener/alert/log.xml
Listening Endpoints Summary...(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=oracle)(PORT=1521)))
Services Summary...
Service "dg4msql" has 1 instance(s).Instance "dg4msql", status UNKNOWN, has 1 handler(s) for this service...
Service "orcl" has 1 instance(s).Instance "orcl", status READY, has 1 handler(s) for this service...
Service "orclXDB" has 1 instance(s).Instance "orcl", status READY, has 1 handler(s) for this service...
The command completed successfully

[oracle@oracle db_1]$ cat $ORACLE_HOME/network/admin/tnsnames.ora
# tnsnames.ora Network Configuration File: /data/oracle/product/11.2.0/db_1/network/admin/tnsnames.ora
# Generated by Oracle configuration tools.
ORCL =(DESCRIPTION =(ADDRESS = (PROTOCOL = TCP)(HOST = oracle)(PORT = 1521))(CONNECT_DATA =(SERVER = DEDICATED)(SERVICE_NAME = orcl)))
dg4msql  =(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=localhost)(PORT=1521))(CONNECT_DATA=(SID=dg4msql))(HS=OK))

测试tns

[oracle@oracle ~]$ tnsping dg4msqlTNS Ping Utility for Linux: Version 11.2.0.1.0 - Production on 30-JUN-2020 08:50:27Copyright (c) 1997, 2009, Oracle.  All rights reserved.Used parameter files:
/data/oracle/product/11.2.0/db_1/network/admin/sqlnet.oraUsed TNSNAMES adapter to resolve the alias
Attempting to contact (DESCRIPTION= (ADDRESS=(PROTOCOL=tcp)(HOST=localhost)(PORT=1521)) (CONNECT_DATA=(SID=dg4msql)) (HS=OK))
OK (0 msec)

四、创建dblink

#创建dblink，如果在create之后不加public,则创建的dblink就不是公共的,就只有创建者可以使用了
#  创建dblink的用户有对应的数据库权限，create public database link 或者create database link
sys@orcl(133)> create public database link dg4msql2 connect to sa identified by "970125" using 'dg4msql';Database link created.Elapsed: 00:00:00.01
#查看dblink
sys@orcl(133)> select owner,object_name from dba_objects where object_type='DATABASE LINK';OWNER                                                        OBJECT_NAME
------------------------------------------------------------ ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
SYS                                                          DG4MSQL
PUBLIC                                                       DG4MSQL2Elapsed: 00:00:00.08
#测试
sys@orcl(133)> select * from t1@dg4msql2;id name
---------- ----------------------------------------12 zijieElapsed: 00:00:00.57
sys@orcl(133)> insert into t1@dg4msql values(3,'hello');1 row created.Elapsed: 00:00:00.78
sys@orcl(133)> select * from t1@dg4msql2;id name
---------- ----------------------------------------12 zijie3 helloElapsed: 00:00:00.01
#删除dblink
sys@orcl(133)> drop public database link dg4msql2;Database link dropped.Elapsed: 00:00:00.01

Oracle中查询结果集与SQL Server一致

五、总结

Oracle通过透明网关这样的一个接口操纵其他数据库，实现数据库的异构服务。配置上比较简单，保证配置上准确无误，网络通信正常即可实现。如果需要配置多个透明网关，只需要新增一个initSID.ora文件，监听及TNS对应修改即可。

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