Oracle通过odbc数据源连接代码数据库创建DBLINK操作
一、安装unixODBC
2、将unixODBC-2.3.0.tar.gz放到/root目录
3、命令安装
[root@localhost /]# tar -zxvf unixODBC-2.3.0.tar.gz
[root@localhost /]# cd unixODBC-2.3.0
[root@localhost unixODBC-2.3.0]# ./configure --prefix=/usr/local/unixODBC-2.3.0 --includedir=/usr/include --libdir=/usr/lib --bindir=/usr/bin --sysconfdir=/etc
[root@localhost unixODBC-2.3.0]#make && make install
安装成功后,unixODBC所需的头文件都被安装到了/usr/inlucde下,编译好的库文件安装到了/usr/lib下,与unixODBC相关的可执行文件安装到了/usr/bin下,配置文件放到了/etc下。
安装完成之后可以看一下这个路径在哪里
[root@RH6 ~]# odbcinst -j
unixODBC 2.3.9
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
二、配置odbc.ini
2.1配置odbc.ini
[root@RH6 ~]# cat /etc/odbc.ini
[dm8]
Driver = DM8 ODBC DRIVER
Description = DM ODBC DSND
SERVER = 192.168.189.145
UID = SYSDBA
PWD = SYSDBA
TCP_PORT = 5236
2.2配置odbcinst.ini
odbcinst.ini文件中添加
[root@RH6 ~]# cat /etc/odbcinst.ini
[DM8 ODBC DRIVER]
Description = ODBC DRIVER FOR DM8
Driver = /usr/local/bin/libdodbc.so
threading = 0
切换到oracle用户测试
isql -v dm8 username password
如果提示这个错误可以把动态库添加到环境变量中,只需要在末尾加上达梦的动态库文件路径即可;
[oracle@RH6 ~]$ isql -v dm8
[01000][unixODBC][Driver Manager]Can't open lib '/home/dmdata/bin/libdodbc.so' : file not found
[ISQL]ERROR: Could not SQLConnect
[oracle@RH6~]$vim .bash_profile
Export LD_LIBRARY_PATH=LD_LIBRARY_PATH:/usr/lib/oracle/11.2/client64/lib/:/home/dmdata/bin/
[oracle@RH6~]$source .bash_profile
进行再次测试
[oracle@RH6 ~]$ isql -v dm8
+---------------------------------------+
| Connected! |
| |
| sql-statement |
| help [tablename] |
| quit |
| |
+---------------------------------------+
SQL>
三、配置透明网关
[oracle@RH6 admin]$ cd /home/app/oracle/product/11.2.0/db_1/hs/admin
[oracle@RH6 admin]$ ls
extproc.ora initdg4odbc.ora initdm8.ora listener.ora.sample tnsnames.ora.sample
[oracle@RH6 admin]$ vim initdm8.ora
HS_FDS_CONNECT_INFO = DM8
HS_FDS_TRACE_LEVEL = off
set ODBCINI=/etc/odbc.ini
HS_FDS_SHAREABLE_NAME =/usr/lib/libodbc.so
四、配置oracle监听
vim $ORACLE_HOME/network/admin/listener.ora 配置静态监听添加以下内容
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(PROGRAM = dg4odbc)
(ORACLE_HOME = /home/app/oracle/product/11.2.0/db_1)
(SID_NAME = dm8) --odbc.ini中的名称
)
( SID_DESC =
(GLOBAL_DBNAME = orcl)
(ORACLE_HOME = /home/app/oracle/product/11.2.0/db_1)
(SID_NAME = orcl)
)
)
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.189.150)(PORT = 1521))
)
(DESCRIPTION =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
)
)
ADR_BASE_LISTENER = /home/app/oracle
配置tnsnames.ora
vim $ORACLE_HOME/network/admin/tnsnames.ora
dm8=
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.189.150)(PORT = 1521))
(CONNECT_DATA =
(SERVICE_NAME = dm8)
)
(HS = OK)
)
测试之后tnsping dm8测试检查
配置完成之后重启监听文件lsnrctl stop lsnrctl start lsnrctl status
重启之后你会发现有一个dm8的实例被监听,状态为unknown;
监听端点概要...
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=192.168.189.150)(PORT=1521)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))
服务摘要..
服务 "dm8" 包含 1 个实例。
实例 "dm8", 状态 UNKNOWN, 包含此服务的 1 个处理程序...
服务 "orcl" 包含 1 个实例。
实例 "orcl", 状态 UNKNOWN, 包含此服务的 1 个处理程序...
命令执行成功
五、在oracle数据库中创建dblink
create database link dmlink connect to "SYSDBA" identified by SYSDBA using 'DM8';
六、测试通过dblink查看达梦数据库数据