OCCI中的内存泄漏 Memory Leak in OCCI

一个简单的OCCI小程序充,用valgrind 检查也会报一大堆错误
valgrind --tool=memcheck --leak-check=yes ./occiexam

据oralce forum上的一位kyrptt老兄说,　这并不是程序的问题,而是OCCI库本身的问题

"You do not have a Leak.

The OCCI library allocates space for something in setUserName with:

new[] and then de-allocates it with delete instead of delete[].

Actually the OCCI library outputs alot of messages with Valgrind. but I have not noticed nay particularly damaging leaks.

I suggest you use a Suppresions file to ignore the specific OCCI related errors so you dont miss leaks of your own."

害得我花了这么长时间去研究这个问题,


#include <iostream>


#include <string>


#include <vector>




#include <occi.h>




using namespace std;


using namespace oracle::occi;






int main()




...{




Environment* env;


env = Environment::createEnvironment(Environment::OBJECT);


cout << "Enviorment created " << endl;




Connection* conn;


Statement *stmt;


ResultSet *rs;


vector<MetaData> vMD;


vector<MetaData> vArgMD;


int dataType;


char tmpChar[1024];




Statement::Status status;


try




...{




conn = env->createConnection("iris","tpstps", "iris10gr1");


cout << "connection created " << endl;


stmt = conn->createStatement();




string sStmt = "begin :1 := PKGNETWORK.spGetNetworkInfoByIP(:2, :3); end;";


// 1st sp


stmt->setSQL(sStmt);


stmt->registerOutParam(1, OCCIINT);


stmt->setString(2,"192.168.6.12");


stmt->setMaxParamSize(2,20);


stmt->registerOutParam(3,OCCICURSOR);




status = stmt->execute();


int retVal = stmt->getInt(1);


rs = stmt->getCursor(3);//use ResultSet to fetch rows


vMD = rs->getColumnListMetaData();


dataType = vMD[0].getInt(MetaData::ATTR_DATA_TYPE);




cout << "Attribute count : " << vMD[0].getAttributeCount() << endl;


dataType=vMD[0].getInt(MetaData::ATTR_DATA_TYPE);


cout << "Attribute type : " << dataType << endl;


cout << "Attribute name : " << vMD[0].getString(MetaData::ATTR_NAME)<< endl;


cout << "Size : " << vMD.size() << endl;


while (rs->next())




...{


cout << "next row";


cout << "NetID : " << rs->getString(1).c_str() << endl;


}




cout << " vector filled for SP1" << endl;


cin >> tmpChar;




vMD.clear();


stmt->closeResultSet(rs);


conn->terminateStatement(stmt);




cout << "1st sp executed" << endl;




// 2nd sp


string sStmt1 = "begin :1 := PKGJUNK.SpGetTblAccount(:2); end;";


stmt = conn->createStatement();


stmt->setSQL(sStmt1);


stmt->registerOutParam(1, OCCIINT);


stmt->registerOutParam(2,OCCICURSOR);


status = stmt->execute();




retVal = stmt->getInt(1);


rs = stmt->getCursor(2);//use ResultSet to fetch rows


int loop = 1;


vMD = rs->getColumnListMetaData();


dataType = vMD[0].getInt(MetaData::ATTR_DATA_TYPE);




cout << "Attribute count : " << vMD[0].getAttributeCount() << endl;


dataType=vMD[0].getInt(MetaData::ATTR_DATA_TYPE);


cout << "Attribute type : " << dataType << endl;


cout << "Attribute name : " << vMD[0].getString(MetaData::ATTR_NAME)<< endl;


cout << "Size : " << vMD.size() << endl;


while (rs->next())




...{


cout << "next row";


cout << "NetID : " << rs->getString(1).c_str() << endl;


}




stmt->closeResultSet(rs);


cout << "2nd sp executed" << endl;




conn->terminateStatement(stmt);




// sp-3


string sStmt2 = "begin :1 := PKGONELINK.spValidateAccount(:2,:3,:4,:5,:6); end;";


stmt = conn->createStatement();


stmt->setSQL(sStmt2);


stmt->registerOutParam(1, OCCIINT);


stmt->setString(2,"37863 ");


stmt->setMaxParamSize(2,100);


stmt->registerOutParam(3,OCCISTRING, 20);


stmt->registerOutParam(4,OCCISTRING, 2);


stmt->registerOutParam(5,OCCISTRING, 3);


stmt->registerOutParam(6,OCCISTRING, 3);




status = stmt->execute();




cout << "3rd sp executed" << endl;




conn->terminateStatement(stmt);


conn->flushCache();


env->terminateConnection(conn);




vMD.clear();




cout << "Demo completed...data deleted" << endl;


cin >> tmpChar;


}


catch (SQLException &ex)




...{//cleanup


cout << "Error, cleaning up..." << ex.getMessage() << endl;


conn->terminateStatement(stmt);


env->terminateConnection(conn);


cout << "terminating env" << endl;


Environment::terminateEnvironment(env);


// throw;//will be caught by outer handler


}




Environment::terminateEnvironment(env);




return 0;


}





Reference
http://forums.oracle.com/forums/thread.jspa?messageID=1493167