Install g++ in Centoos and connect to Oracle database

1. Installation and operating environment

# yum Install gcc-c++

Note: Both gcc-c++ and Libstdc++-devel will be installed at this time.

2. See if the g++ is installed successfully
[[Email protected] Desktop]# g++-V

Use built-in specs.

Target: X86_64-redhat-linux

Configured as:.. /configure--prefix=/usr--mandir=/usr/share/man--infodir=/usr/share/info--with-bugurl=http:// Bugzilla.redhat.com/bugzilla--enable-bootstrap--enable-shared--enable-threads=posix--enable-checking=release-- With-system-zlib--enable-__cxa_atexit--disable-libunwind-exceptions--enable-gnu-unique-object-- Enable-languages=c,c++,objc,obj-c++,java,fortran,ada--ENABLE-JAVA-AWT=GTK--disable-dssi--with-java-home=/usr/ Lib/jvm/java-1.5.0-gcj-1.5.0.0/jre--enable-libgcj-multifile--enable-java-maintainer-mode--with-ecj-jar=/usr/ Share/java/eclipse-ecj.jar--disable-libjava-multilib--with-ppl--with-cloog--with-tune=generic--with-arch_32= i686--build=x86_64-redhat-linux

Threading Model: POSIX

GCC version 4.4.7 20120313 (Red Hat 4.4.7-11) (GCC)

3. Testing

(1) Test C language Program TESTC.C
#include <stdio.h>
int main ()
{
printf ("Hello c!\n");
return 0;
}

Run:
# gcc Testc.c-o TESTC
#./TESTC

(2) Test C + + program Test.cpp
#include <iostream>
using namespace Std;
int main ()
{
cout << "Come up and C + + me some time.";
cout << Endl;
cout << "You won ' t regret it!" << Endl;
return 10;
}

Run:
# g++-O test1 test.cpp
#./test1

4 Installing OracleClient

Mainly installs oracle-instantclient11.2-basic-11.2.0.4.0-1.x86_64.rpm and oracle-instantclient11.2-devel-11.2.0.4.0-1.x86_64. Rpm.
# RPM-IVH oracle-instantclient11.2-basic-11.2.0.4.0-1.x86_64.rpm
# RPM–IVH oracle-instantclient11.2-devel-11.2.0.4.0-1.x86_64.rpm

5 Configuration

(1) Configure the ld.so.conf file, fill in the following content:
# vi/etc/ld.so.conf
Include ld.so.conf.d/*.conf
/usr/lib/oracle/11.2/client64/lib

(2) Configure the/etc/hosts file (which fills in the IP address and host name of the Linux system host) and fill in the following contents:
# vi/etc/hosts
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
:: 1 localhost localhost.localdomain localhost6 localhost6.localdomain6
192.168.48.128 Myrhel

6 Testing the connection to the Oracle database

(1) Create a connclient.cpp file and enter the following:

[Email protected] test]# VI connclient.cpp

#include <iostream>

#include <string>

#include <occi.h>

using namespace Std;

using namespace Oracle::occi;

int main ()

{

Environment *env;

Connection *conn;

Statement *stmt;

String struser ("Scott");

String Strpwd ("Orcl0991");

String strconn_string ("10.208.17.206:1521/xe");

env = Environment::createenvironment (environment::object);

conn = Env->createconnection (struser, Strpwd, strconn_string);

if (null!= conn)

cout << "conn Success" << Endl;

Else

cout << "Conn failed" <<endl;

String strSQL ("Select Deptno,dname from dept");

stmt = Conn->createstatement (strSQL);

ResultSet *rset = Stmt->executequery ();

while (Rset->next ()) {

int deptno = Rset->getint (1);

String dname = rset->getstring (2);

cout<< "deptno=" <<deptno<< ", dname=" <<dname<<endl;

}

Stmt->closeresultset (RSet);

Conn->terminatestatement (stmt);

Env->terminateconnection (conn);

Environment::terminateenvironment (env);

Return0;

}

(2) Compile and run:
[Email protected] test]# g++-o connclient connclient.cpp-l/usr/lib/oracle/11.2/client64/lib-i/usr/include/oracle/1 1.2/client64/-locci-lclntsh/usr/lib64/libstdc++.so.6
[Email protected] test]#./connclient
Conn Success
Deptno=10,dname=accounting
Deptno=20,dname=research
Deptno=30,dname=sales
Deptno=40,dname=operations

See Oracle Feature page for more information on Oracle HTTP://WWW.LINUXIDC.COM/TOPICNEWS.ASPX?TID=12

Install g++ in Centoos and connect to Oracle database