memory leak in occi

转帖于 http://hi.baidu.com/walterfan/blog/item/94d9a938605d87c0d462256c.html 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