南大通用数据库-Gbase-8a-学习-11-Oracle通过Dblink访问Gbase8a

一、测试环境

二、测试步骤

1、查看是否安装Oracle网关

默认安装的。

[root@xdw1 ~]# su - oracle
上一次登录：二 8月 16 09:14:39 CST 2022pts/3 上

[oracle@xdw1 ~]$  dg4odbc


Oracle Corporation --- TUESDAY   AUG 16 2022 09:31:12.030

Heterogeneous Agent Release 11.2.0.1.0 - 64bit Production  Built with
   Oracle Database Gateway for ODBC
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2、安装unixODBC

相关安装包下载可以参考之前写的一篇文章Postgresql学习02-配置ODBC数据源

（1）解压

[root@xdw1 pkg]# tar -xvf unixODBC-2.3.4.tar.gz
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（2）编译安装

[root@xdw1 unixODBC-2.3.4]# ./configure --prefix=/usr/local/unixODBC-2.3.4 --includedir=/usr/include --libdir=/usr/lib -bindir=/usr/bin --sysconfdir=/etc

[root@xdw1 unixODBC-2.3.4]# make -j 3

[root@xdw1 unixODBC-2.3.4]# make install
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（3）查看unixodbc是否安装成功

[root@xdw1 unixODBC-2.3.4]# odbcinst -j
unixODBC 2.3.4
DRIVERS............: /etc/odbcinst.ini
SYSTEM DATA SOURCES: /etc/odbc.ini
FILE DATA SOURCES..: /etc/ODBCDataSources
USER DATA SOURCES..: /root/.odbc.ini
SQLULEN Size.......: 8
SQLLEN Size........: 8
SQLSETPOSIROW Size.: 8
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（4）配置ODBC环境变量

/etc/profile文件末尾添加如下两行。

export ODBCSYSINI=/etc
export ODBCINI=/etc/odbc.ini
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添加完source一下这个文件，让环境变量在当前会话生效。

[root@xdw1 unixODBC-2.3.4]# source /etc/profile
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3、配置相关文件

（1）odbcinst.ini

我的libgsodbc8.so动态库放在/opt/pkg下，需要和官网申请。

[root@xdw1 unixODBC-2.3.4]# cat /etc/odbcinst.ini 
[GBaseODBCDriver]
Driver=/opt/pkg/libgsodbc8.so
UsageCount=1
DontDLClose=1
Threading=0
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（2）odbc.ini

[root@xdw1 unixODBC-2.3.4]# cat /etc/odbc.ini
[gbase8a]
Description=ODBC
Driver=GBaseODBCDriver
Server=192.168.142.10
Port=5258
UID=czg
Password=qwer1234
Database=czg
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4、测试数据源配置是否正常

[root@xdw1 unixODBC-2.3.4]# su - oracle
上一次登录：二 8月 16 09:31:10 CST 2022pts/3 上

[oracle@xdw1 ~]$ isql gbase8a -v
+---------------------------------------+
| Connected!                            |
|                                       |
| sql-statement                         |
| help [tablename]                      |
| quit                                  |
|                                       |
+---------------------------------------+

SQL> select version();
+--------------------+
| version()          |
+--------------------+
| 8.6.2.43-R33.132743|
+--------------------+
SQLRowCount returns 1
1 rows fetched
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5、配置tnsnames.ora文件

tnsnames.ora添加如下内容：

gbase8a =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.142.11)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = gbase8a)
    )
 (HS = OK)
  )
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完整内容如下：

[oracle@xdw1 admin]$ pwd
/u01/app/oracle/product/11.2.0/network/admin

[oracle@xdw1 admin]$ cat tnsnames.ora 
# tnsnames.ora Network Configuration File: /u01/app/oracle/product/11.2.0/network/admin/tnsnames.ora
# Generated by Oracle configuration tools.

ORCL =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.142.11)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = orcl)
    )
  )

gbase8a =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.142.11)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = gbase8a)
    )
 (HS = OK)
  )
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6、配置listener.ora文件

listener.ora添加如下内容：

  (SID_DESC =
  (SID_NAME = gbase8a)
  (ORACLE_HOME = /u01/app/oracle/product/11.2.0)
  (PROGRAM = dg4odbc)
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完整内容如下：

[oracle@xdw1 admin]$ pwd
/u01/app/oracle/product/11.2.0/network/admin

[oracle@xdw1 admin]$ echo $ORACLE_HOME
/u01/app/oracle/product/11.2.0

[oracle@xdw1 admin]$ cat listener.ora 
# listener.ora Network Configuration File: /u01/app/oracle/product/11.2.0/network/admin/listener.ora
# Generated by Oracle configuration tools.

LISTENER =
  (DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
      (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.142.11)(PORT = 1521))
    )
  )

ADR_BASE_LISTENER = /u01/app/oracle

SID_LIST_LISTENER =  
(SID_LIST =  
  (SID_DESC =  
  (GLOBAL_DBNAME = orcl)
  (SID_NAME = orcl)
  )
  (SID_DESC =
  (SID_NAME = gbase8a)
  (ORACLE_HOME = /u01/app/oracle/product/11.2.0) 
  (PROGRAM = dg4odbc)
  )
)
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7、配置initgbase8a.ora文件

[oracle@xdw1 admin]$ pwd
/u01/app/oracle/product/11.2.0/hs/admin

[oracle@xdw1 admin]$ cat initgbase8a.ora
HS_FDS_CONNECT_INFO = gbase8a
HS_FDS_TRACE_LEVEL = 0
HS_FDS_SHAREABLE_NAME=/usr/lib64/libodbc.so
HS_FDS_SUPPORT_STATISTICS=FALSE
HS_LANGUAGE=AMERICAN_AMERICA.WE8ISO8859P15
set ODBCINI=/etc/odbc.ini
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8、监听重载

[oracle@xdw1 admin]$ lsnrctl reload

LSNRCTL for Linux: Version 11.2.0.1.0 - Production on 16-AUG-2022 14:48:41

Copyright (c) 1991, 2009, Oracle.  All rights reserved.

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521)))
The command completed successfully

[oracle@xdw1 admin]$ lsnrctl status

LSNRCTL for Linux: Version 11.2.0.1.0 - Production on 16-AUG-2022 14:48:47

Copyright (c) 1991, 2009, Oracle.  All rights reserved.

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521)))
STATUS of the LISTENER
------------------------
Alias                     LISTENER
Version                   TNSLSNR for Linux: Version 11.2.0.1.0 - Production
Start Date                15-AUG-2022 14:42:47
Uptime                    1 days 0 hr. 5 min. 59 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Listener Parameter File   /u01/app/oracle/product/11.2.0/network/admin/listener.ora
Listener Log File         /u01/app/oracle/diag/tnslsnr/xdw1/listener/alert/log.xml
Listening Endpoints Summary...
  (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=192.168.142.11)(PORT=1521)))
Services Summary...
Service "gbase8a" has 1 instance(s).
  Instance "gbase8a", status UNKNOWN, has 1 handler(s) for this service...
Service "orcl" has 1 instance(s).
  Instance "orcl", status UNKNOWN, has 1 handler(s) for this service...
The command completed successfully
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9、Oracle创建Dblink

[oracle@xdw1 admin]$ sqlplus / as sysdba

SQL*Plus: Release 11.2.0.1.0 Production on Tue Aug 16 14:11:27 2022

Copyright (c) 1982, 2009, Oracle.  All rights reserved.


Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options

SQL> conn czg/qwer1234
Connected.

SQL>  create public database link gbase8a connect to "czg" identified by "qwer1234" using 'gbase8a';

Database link created.

SQL> select * from czg@gbase8a;

	 a b
---------- ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
	 2 zxj
	 1 czg

SQL> 
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10、Gbase8a中验证

gbase> select * from czg.czg;
+------+------+
| a    | b    |
+------+------+
|    2 | zxj  |
|    1 | czg  |
+------+------+
2 rows in set (Elapsed: 00:00:00.17)
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