通过unixODBC访问PostgreSQL数据库

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[作者 高健@博客园  [email protected]]

 

步骤1,先安装PostgreSQL

具体不详述,参考PostgreSQL的官方文档或下载、解压后的INSTALL文件中的指令即可

运行configure时指定安装目录:./configure --prefix=/usr/local/pgsql

我安装的是 PostgreSQL9.1.2

 

步骤2,再安装unixODBC

下载 unixODBC-2.3.1.tar.gz,以postgres 用户身份进行解压。

然后运行:./configure --prefix=/usr/local/unixodbc

然后 make

       sudo make install

 

步骤3,再安装psqlodbc

一开始安装的是psqlodbc-09.01.0200.tar.gz,make的时候,发现和unixODBC有冲突。

查阅文档,解决方法是-----换版本!

http://postgresql.1045698.n5.nabble.com/Compile-error-08-04-0200-with-unix-odbc-2-2-14p2-1-on-Debian-Squeeze-AMD64-td3244665.html

所以,下载  psqlodbc-09.02.0100.tar.gz

以postgres用户身份解压缩,然后运行:

export LD_LIBRARY_PATH=/usr/local/unixodbc/lib:$LD_LIBRARY_PATH

./configure --prefix=/usr/local/psqlodbc --with-libpq=/usr/local/pgsql/ --with-unixodbc=/usr/local/pgsql/unixodbc/

再运行:

     make

     sudo make install

 

步骤4,配置unixODBC 

    

[root@server etc]# pwd
/usr/local/unixodbc/etc [root@server etc]# ls ODBCDataSources odbc.ini odbcinst.ini [root@server etc]# cat odbcinst.ini [PostgreSQL] Description=PostgreSQL driver for Linux Driver=/usr/local/psqlodbc/lib/psqlodbcw.so Setup=/usr/local/psqlodbc/lib/psqlodbcw.so UsageCount=1



[root@server etc]# cat odbc.ini [GaoTest] Description=Test for Mr Gao Driver=PostgreSQL Trace=Yes TraceFile=sql.log Database=postgres Servername=localhost UserName=postgres Password=postgres Port=5432 Protocol=6.4 ReadOnly=No RowVersioning=No ShowSystemTables=No ShowOidColumn=No FakeOidIndex=No ConnSettings= [root@server etc]#

 

 

步骤5,验证

通过isql来验证是否可以连接到postgresql,

运行中通过strace跟踪发现,isql需要在几个目录中寻找libpq.so.5

 

open("/usr/local/unixodbc/lib/libpq.so.5", O_RDONLY) = -1 ENOENT (No such file or directory) open("/usr/local/unixodbc/lib/libpq.so.5", O_RDONLY) = -1 ENOENT (No such file or directory) open("/lib64/tls/x86_64/libpq.so.5", O_RDONLY) = -1 ENOENT (No such file or directory) stat("/lib64/tls/x86_64", 0x7fff7fdcd0b0) = -1 ENOENT (No such file or directory) open("/lib64/tls/libpq.so.5", O_RDONLY) = -1 ENOENT (No such file or directory) stat("/lib64/tls", 0x7fff7fdcd0b0)      = -1 ENOENT (No such file or directory) open("/lib64/x86_64/libpq.so.5", O_RDONLY) = -1 ENOENT (No such file or directory) stat("/lib64/x86_64", 0x7fff7fdcd0b0)   = -1 ENOENT (No such file or directory) open("/lib64/libpq.so.5", O_RDONLY)     = -1 ENOENT (No such file or directory) stat("/lib64", {st_mode=S_IFDIR|0755, st_size=12288, ...}) = 0 open("/usr/lib64/tls/x86_64/libpq.so.5", O_RDONLY) = -1 ENOENT (No such file or directory) stat("/usr/lib64/tls/x86_64", 0x7fff7fdcd0b0) = -1 ENOENT (No such file or directory) open("/usr/lib64/tls/libpq.so.5", O_RDONLY) = -1 ENOENT (No such file or directory) stat("/usr/lib64/tls", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0 open("/usr/lib64/x86_64/libpq.so.5", O_RDONLY) = -1 ENOENT (No such file or directory) stat("/usr/lib64/x86_64", 0x7fff7fdcd0b0) = -1 ENOENT (No such file or directory) open("/usr/lib64/libpq.so.5", O_RDONLY) = -1 ENOENT (No such file or directory) stat("/usr/lib64", {st_mode=S_IFDIR|0755, st_size=106496, ...}) = 0

于是在lib64目录下建立到 libpq.so.5的链接:

[root@server lib64]# pwd                        
/lib64 [root@server lib64]# [root@server lib64]# ls -lrt libpq.so.5 lrwxrwxrwx 1 root root 31  9月 17 17:48 libpq.so.5 -> /usr/local/pgsql/lib/libpq.so.5 

然后再次运行isql:

[root@server etc]# cd /usr/local/unixodbc/bin [root@server bin]# ./isql -v GaoTest +---------------------------------------+                    
| Connected!                            |                    
|                                       |                    
| sql-statement                         |                    
| help [tablename]                      |                    
| quit                                  |                    
|                                       |                    
+---------------------------------------+ SQL> quit [root@server bin]# 

 

[作者 高健@博客园  [email protected]]
回到上一级页面:PostgreSQL基础知识与基本操作索引页    回到顶级页面:PostgreSQL索引页
磨砺技术珠矶,践行数据之道,追求卓越价值

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