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Red Hat Enterprise Linux AS4, C++ OCCI connect Oracle 9i

时间:2016-03-02 15:05:09      阅读:251      评论:0      收藏:0      [点我收藏+]

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前提是已经安装好Oracle 9i。

1. 下载对应的ORACLE client安装。

http://www.oracle.com/technetwork/database/features/instant-client/index-097480.html

因为没有9i的client提供下载了,我选择最接近的版本下载:

Version 10.1.0.5
Instant Client Package - Basic: All files required to run OCI, OCCI, and JDBC-OCI applications
Download instantclient-basic-linux32-10.1.0.5-20060511.zip (31,413,713 bytes) (cksum - 384697539)

下载之后解压。

2. 先把示例代码给出来:

//oci.cpp
#include <iostream> #include <string> #include <occi.h> using namespace std; using namespace oracle::occi; int main() { Connection *conn; Environment *env; Statement *stmt; //build a connection string struser("scott"); string strpwd("tiger"); string strconn_string(""); cout << "1" << endl; env = Environment::createEnvironment(Environment::OBJECT); cout << "2" << endl; conn = env->createConnection(struser, strpwd, strconn_string); cout << "3" << endl; if( NULL != conn) cout << "conn success" << endl; else cout << "conn failed" << endl; //execute sql statement string strsql("select to_char(sysdate,‘yyyy-mm-dd hh24:mi:ss‘) from dual"); stmt = conn->createStatement(strsql); ResultSet *rset = stmt->executeQuery(); while(rset->next()) { string time = rset->getString(1); cout << "now time:" << time << endl; } //close resourses stmt->closeResultSet(rset); conn->terminateStatement(stmt); env->terminateConnection(conn); Environment::terminateEnvironment(env); return 0; }

3. 编译

这里对g++的版本有要求,如果是g++ 3.x.x的,可能会爆出如下错误:

undefined reference to `oracle::occi::Environment::createEnvironment(orac le::occi::Environment::Mode, void*, void* (*)(void*, unsigned int), void* (*)(void*, void*, unsigned int), void (*)(void*, void*))

网上很多讨论这个错误的,解决办法是安装低版本的g++。

 


资料(可以不看):解决方案的出处:http://www.dbforums.com/showthread.php?1619980-Makefile-problem-for-OCCI-on-Oracle-9i

If you‘re getting the following error messages:


undefined reference to `oracle:occi::Environment::createEnvironment(oracle:occi::Environment::Mode, void*, void* (*)(void*, unsigned), void* (*)(void*, void*, unsigned), void (*)(void*, void*))‘

and

undefined reference to `oracle:occi::Environment::terminateEnvironment(oracle:occi::Environment*)‘

then you‘re probably running oracle9i on redhat 8.0. to solve this, download and install the following rpm‘s from this redhat link:

* compat-gcc-7.3-2.96.118.i386.rpm
* compat-gcc-c++-7.3-2.96.118.i386.rpm
* compat-libstdc++-7.3-2.96.118.i386.rpm
* compat-libstdc++-devel-7.3-2.96.118.i386.rpm 

and compile with g++296 instead of g++. sure you‘ll be stuck with g++-2.96, but at least it will compile and run.


 

在谷歌搜索如下4个rpm包安装:

* compat-gcc-7.3-2.96.118.i386.rpm
* compat-libstdc++-7.3-2.96.118.i386.rpm
* compat-libstdc++-devel-7.3-2.96.118.i386.rpm 
* compat-gcc-c++-7.3-2.96.118.i386.rpm

请按照安装上述顺序安装rpm包,因为最后一个依赖于第一二三个。

如果安装的时候报错说“正在安装的g++与系统上存在的g++有冲突”,在rpm后加上-aid --force参数,如下:

sudo rpm -ivh xxx.rpm -aid --force

详情可见这篇文:http://www.cnblogs.com/duanguyuan/p/4118210.html

 

安装好此版本的g++后,就可以用以下命令编译了:

 g++296 -o oci -I /opt/oracle/product/rdbms/public/ -I /opt/oracle/product/rdbms/demo/ -I /home/oracle/instantclient10_1/ -L /opt/oracle/product/lib/ -L /opt/oracle/product/rdbms/lib/ oci.cpp -lclntsh -locci /usr/lib/libstdc++.so.5 -Wall -O -g

注意仔细看上边所包含的编译目录,先看看自己的$ORACLE_HOME在哪里,看看上述的目录都在不在。其中instantclient10_1目录便是第一步下载的Oracle client。

4. 运行

结果如下图

技术分享

 

 

其他参考:

http://blog.csdn.net/gyanp/article/details/6107044

http://oradim.blogspot.com/2009/08/getting-started-with-occi-linux-version.html

 

Red Hat Enterprise Linux AS4, C++ OCCI connect Oracle 9i

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原文地址:http://www.cnblogs.com/duanguyuan/p/4118592.html

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