前言
4个月以前，预研了tns314的包分析。当时写了一个OCI测试程序，用来配合抓包。
现在将运行环境搞掉了，重新安装客户端后，发生了2个问题。
-
装32bits的oraclient, 编译的是64bits的OCI测试程序，引起报错。
解决方法：将测试工程种加入32bits和64bits的OCI库，根据安装的oraclient的不同(32bits/64bits), 也编译成(32bits/64bits)进行测试。 -
遍历行集时，出现报错: ORA-01405: 提取的列值为 NULL, 导致测试程序无法遍历结果集。
解决方法：遍历行集时，如果错误码不是OCI_NO_DATA，说明行集没遍历完，可以继续遍历下一行。只是这一行有NULL内容的字段(用sqldeveloper.exe看了对应的表，确实有NULL内容的字段).花时间做过的实验，隔的时间长了，再回头来弄，都忘的差不多了。
如果及时做笔记，完善保存测试工程。捡起来要方便些。
特别是自己有多个版本的测试工程时，时间长了，还真要花时间确认一下，才能知道哪个工程才是自己最后完善的那个测试工程。
OCI测试工程下载点
测试工程预览
// @file oci_test_on_vs2017.cpp
// @brief test oci interface
#include "stdafx.h"
#include <windows.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <string>
#include <conio.h>
// OCI开发环境配置
// 远端oracle服务器端装好，配好TNS服务名称
//
// 安装oracle客户端软件时，选第3项(开发工具).
// oracle客户端安装完后，用自带的网络助手配置监听器和远端的TNS服务名称
//
// 将工程设定为win64, 包含进OCI头文件和库文件.
// 在打开远端oracle服务器(进入服务器桌面)的情况下，就可以运行调试测试程序了.
// 不用配ODBS的DSN.
#include "oci.h"
// oci.lib is win64, win32编译不过.
// 要安装win32版的oracle client后，拷贝oci开发目录出来用
#pragma comment(lib, "oci.lib")
// #pragma comment(lib, "ociw32.lib")
// 用oracle网络助手配置的远端网络服务名称, 不是ODBC助手配置出来的dsn名称
#define REMOTE_TNS_SERVICE_NAME "orcl" // 服务名称不区分大小写
#define DB_USER_NAME "system"
#define DB_USER_PWD "system"
#define CMD_QUIT "q"
#define CMD_TEST_SELECT_ALL_BUILD_IN_TABLE "test_select"
#define CMD_TEST_SQL "test_sql"
const char* psz_ary_case_sql[] = {
// "select table_name,tablespace_name,temporary from user_tables",
// "select 'x' from dual",
// "select * from v$version",
// "select * from REPCAT$_RESOLUTION_METHOD",
"select * from AQ$_INTERNET_AGENT_PRIVS",
NULL
};
const char* psz_ary_orcl_all_tbl_name[] = {
"LOGMNR_PARAMETER$",
"LOGMNR_SESSION$",
"MVIEW$_ADV_WORKLOAD",
"MVIEW$_ADV_BASETABLE",
"MVIEW$_ADV_SQLDEPEND",
"MVIEW$_ADV_PRETTY",
"MVIEW$_ADV_TEMP",
"MVIEW$_ADV_FILTER",
"MVIEW$_ADV_LOG",
"MVIEW$_ADV_FILTERINSTANCE",
"MVIEW$_ADV_LEVEL",
"MVIEW$_ADV_ROLLUP",
"MVIEW$_ADV_AJG",
"MVIEW$_ADV_FJG",
"MVIEW$_ADV_GC",
"MVIEW$_ADV_CLIQUE",
"MVIEW$_ADV_ELIGIBLE",
"MVIEW$_ADV_OUTPUT",
"MVIEW$_ADV_EXCEPTIONS",
"MVIEW$_ADV_PARAMETERS",
"MVIEW$_ADV_INFO",
"MVIEW$_ADV_JOURNAL",
"MVIEW$_ADV_PLAN",
"AQ$_QUEUE_TABLES",
"AQ$_QUEUES", // 这个表特别的大
"AQ$_SCHEDULES",
"AQ$_INTERNET_AGENTS",
"AQ$_INTERNET_AGENT_PRIVS",
"DEF$_ERROR",
"DEF$_DESTINATION",
"DEF$_CALLDEST",
"DEF$_DEFAULTDEST",
"DEF$_LOB", // 这个表特别的大
"DEF$_PROPAGATOR",
"DEF$_ORIGIN",
"DEF$_PUSHED_TRANSACTIONS",
"REPCAT$_REPCAT",
"REPCAT$_FLAVORS",
"REPCAT$_REPSCHEMA",
"REPCAT$_SNAPGROUP",
"REPCAT$_REPOBJECT",
"REPCAT$_REPCOLUMN",
"REPCAT$_KEY_COLUMNS",
"REPCAT$_GENERATED",
"REPCAT$_REPPROP",
"REPCAT$_REPCATLOG",
"REPCAT$_DDL",
"REPCAT$_REPGROUP_PRIVS",
"REPCAT$_PRIORITY_GROUP",
"REPCAT$_PRIORITY",
"REPCAT$_COLUMN_GROUP",
"REPCAT$_GROUPED_COLUMN",
"REPCAT$_CONFLICT",
"REPCAT$_RESOLUTION_METHOD",
"REPCAT$_RESOLUTION",
"REPCAT$_RESOLUTION_STATISTICS",
"REPCAT$_RESOL_STATS_CONTROL",
"REPCAT$_PARAMETER_COLUMN",
"REPCAT$_AUDIT_ATTRIBUTE",
"REPCAT$_AUDIT_COLUMN",
"REPCAT$_FLAVOR_OBJECTS",
"REPCAT$_TEMPLATE_STATUS",
"REPCAT$_TEMPLATE_TYPES",
"REPCAT$_REFRESH_TEMPLATES",
"REPCAT$_USER_AUTHORIZATIONS",
"REPCAT$_OBJECT_TYPES",
"REPCAT$_TEMPLATE_REFGROUPS",
"REPCAT$_TEMPLATE_OBJECTS",
"REPCAT$_TEMPLATE_PARMS",
"REPCAT$_OBJECT_PARMS",
"REPCAT$_USER_PARM_VALUES",
"REPCAT$_TEMPLATE_SITES",
"REPCAT$_SITE_OBJECTS",
"REPCAT$_RUNTIME_PARMS",
"REPCAT$_TEMPLATE_TARGETS",
"REPCAT$_EXCEPTIONS",
"REPCAT$_INSTANTIATION_DDL",
"REPCAT$_EXTENSION",
"REPCAT$_SITES_NEW",
"LOGSTDBY$PARAMETERS",
"LOGSTDBY$EVENTS",
"LOGSTDBY$APPLY_MILESTONE",
"LOGSTDBY$SCN",
"LOGSTDBY$FLASHBACK_SCN",
"LOGSTDBY$PLSQL",
"LOGSTDBY$SKIP_TRANSACTION",
"LOGSTDBY$SKIP",
"LOGSTDBY$SKIP_SUPPORT",
"LOGSTDBY$HISTORY",
"LOGSTDBY$EDS_TABLES",
"DEF$_AQCALL", // 这个表特别的大
"DEF$_AQERROR", // 这个表特别的大
"SQLPLUS_PRODUCT_PROFILE",
"MVIEW$_ADV_INDEX",
"MVIEW$_ADV_PARTITION",
"HELP",
"LOGMNR_GT_TAB_INCLUDE$",
"LOGMNR_GT_USER_INCLUDE$",
"LOGMNR_GT_XID_INCLUDE$",
"LOGMNRT_MDDL$",
"OL$",
"OL$HINTS",
"OL$NODES",
"LOGMNR_DICTSTATE$",
"LOGMNRC_GTLO",
"LOGMNRC_GTCS",
"LOGMNRC_GSII",
"LOGMNRC_GSBA",
"LOGMNR_SEED$",
"LOGMNR_DICTIONARY$",
"LOGMNR_OBJ$",
"LOGMNR_TAB$",
"LOGMNR_COL$",
"LOGMNR_ATTRCOL$",
"LOGMNR_TS$",
"LOGMNR_IND$",
"LOGMNR_USER$",
"LOGMNR_TABPART$",
"LOGMNR_TABSUBPART$",
"LOGMNR_TABCOMPART$",
"LOGMNR_TYPE$",
"LOGMNR_COLTYPE$",
"LOGMNR_ATTRIBUTE$",
"LOGMNR_LOB$",
"LOGMNR_CDEF$",
"LOGMNR_CCOL$",
"LOGMNR_ICOL$",
"LOGMNR_LOBFRAG$",
"LOGMNR_INDPART$",
"LOGMNR_INDSUBPART$",
"LOGMNR_INDCOMPART$",
"LOGMNR_LOGMNR_BUILDLOG",
"LOGMNR_NTAB$",
"LOGMNR_OPQTYPE$",
"LOGMNR_SUBCOLTYPE$",
"LOGMNR_KOPM$",
"LOGMNR_PROPS$",
"LOGMNR_ENC$",
"LOGMNR_REFCON$",
"LOGMNR_PARTOBJ$",
"LOGMNRP_CTAS_PART_MAP",
"LOGSTDBY$APPLY_PROGRESS",
"MVIEW$_ADV_OWB",
"LOGMNRC_DBNAME_UID_MAP",
"LOGMNR_RESTART_CKPT$", // 这个表特别的大
"LOGMNR_AGE_SPILL$", // 这个表特别的大
"LOGMNR_SESSION_EVOLVE$",
"LOGMNR_UID$",
"LOGMNR_SESSION_ACTIONS$",
"LOGMNR_SPILL$", // 这个表特别的大
"LOGMNR_FILTER$",
"LOGMNR_PROCESSED_LOG$",
"LOGMNR_GLOBAL$",
"LOGMNR_RESTART_CKPT_TXINFO$", // 这个表特别的大
"LOGMNR_LOG$",
"LOGMNR_ERROR$",
NULL
};
typedef struct _tag_col_info{
char* m_psz_name;
int m_i_len_name;
int m_i_data_type_org;
int m_i_data_type_now;
char* m_psz_data;
int m_i_len_data;
_tag_col_info() {
m_psz_name = NULL;
m_i_len_name = 0;
m_i_data_type_org = SQLT_CHR;
m_i_data_type_now = SQLT_CHR;
m_psz_data = NULL;
m_i_len_data = 0;
}
void clear() {
if (NULL != m_psz_name) {
delete [] m_psz_name;
m_psz_name = NULL;
}
if (NULL != m_psz_data) {
delete [] m_psz_data;
m_psz_data = NULL;
}
m_i_len_name = 0;
m_i_len_data = 0;
m_i_data_type_org = SQLT_CHR;
m_i_data_type_now = SQLT_CHR;
}
}TAG_COL_INFO;
void task_readme();
std::string get_oci_error(const char* psz_tip, OCIError* h_oci_error);
void print_oci_error(const char* psz_tip, OCIError* h_oci_error);
void do_oci_task_ex(OCIEnv* h_oci_env, OCIServer* h_oci_server, OCIError* h_oci_error, OCISvcCtx* h_oci_context, OCISession* h_oci_user);
void do_oci_task(const char* psz_sql, OCIEnv* h_oci_env, OCIServer* h_oci_server, OCIError* h_oci_error, OCISvcCtx* h_oci_context, OCISession* h_oci_user);
void case_oci_opt();
int g_i_columns_cnt = 0;
TAG_COL_INFO g_col_info[100];
int _tmain(int argc, _TCHAR* argv[])
{
case_oci_opt();
printf("END\n");
system("pause");
return 0;
}
void case_oci_opt()
{
sword sw_rc = 0;
sword sw_tmp = 0;
OCIEnv* h_oci_env = NULL; // 环境句柄
OCIServer* h_oci_server = NULL; // 服务器句柄
OCIError* h_oci_error = NULL; // 错误句柄
OCISvcCtx* h_oci_context = NULL; // 上下文句柄
OCISession* h_oci_user = NULL; // 用户句柄
sb4 errcode = 0;
do {
// 打印数据库连接信息
printf("connect local tns service name [%s], user name = [%s], password = [%s]\r\n",
REMOTE_TNS_SERVICE_NAME,
DB_USER_NAME,
DB_USER_PWD);
// 创建环境句柄(线程和环境对象)
sw_rc = OCIEnvCreate(&h_oci_env, OCI_THREADED | OCI_OBJECT, (dvoid*)0, 0, 0, 0, (size_t)0, (dvoid**)0);
if (OCI_SUCCESS != sw_rc) {
print_oci_error("error : create env handle", h_oci_error);
break;
}
// 创建服务器句柄
sw_rc = OCIHandleAlloc((dvoid*)h_oci_env, (dvoid**)&h_oci_server, OCI_HTYPE_SERVER, 0, (dvoid**)0);
if (OCI_SUCCESS != sw_rc) {
print_oci_error("error : create service handle", h_oci_error);
break;
}
// 创建错误句柄
sw_rc = OCIHandleAlloc((dvoid*)h_oci_env, (dvoid**)&h_oci_error, OCI_HTYPE_ERROR, 0, (dvoid**)0);
if (OCI_SUCCESS != sw_rc) {
print_oci_error("error : create error handle", h_oci_error);
break;
}
// OCI连接的不是ODBC DSN名称
// my_oracle_dsn
// ORA-12154: TNS: 无法解析指定的连接标识符
// OCI连接的是远端TNS服务名称
// TNSPING ORCL
// 成功
// 如果远端的oracle服务器关了，这里会显示错误：连接超时
// ORA-12170: TNS: 连接超时
// 连接远程数据库(tns服务名称)
sw_rc = OCIServerAttach(h_oci_server, h_oci_error,
(text*)REMOTE_TNS_SERVICE_NAME,
(sb4)strlen(REMOTE_TNS_SERVICE_NAME),
OCI_DEFAULT);
// packet 1~18
if (OCI_SUCCESS != sw_rc) {
print_oci_error("error : remote database connect", h_oci_error);
break;
}
// 创建上下文
sw_rc = OCIHandleAlloc((dvoid*)h_oci_env, (dvoid**)&h_oci_context, OCI_HTYPE_SVCCTX, 0, (dvoid**)0);
// packet 19~20
if (OCI_SUCCESS != sw_rc) {
print_oci_error("error : create context", h_oci_error);
break;
}
// 设置上下文属性
sw_rc = OCIAttrSet((dvoid**)h_oci_context, OCI_HTYPE_SVCCTX, (dvoid*)h_oci_server, (ub4)0, OCI_ATTR_SERVER, h_oci_error);
if (OCI_SUCCESS != sw_rc) {
print_oci_error("error : set context", h_oci_error);
break;
}
// 创建用户句柄
sw_rc = OCIHandleAlloc((dvoid*)h_oci_env, (dvoid**)&h_oci_user, OCI_HTYPE_SESSION, 0, (dvoid**)0);
if (OCI_SUCCESS != sw_rc) {
print_oci_error("error : create user", h_oci_error);
break;
}
// 设置用户名
sw_rc = OCIAttrSet((dvoid*)h_oci_user, OCI_HTYPE_SESSION, (dvoid*)DB_USER_NAME, (ub4)strlen(DB_USER_NAME), OCI_ATTR_USERNAME, h_oci_error);
if (OCI_SUCCESS != sw_rc) {
print_oci_error("error : set user name", h_oci_error);
break;
}
// 设置口令
sw_rc = OCIAttrSet((dvoid*)h_oci_user, OCI_HTYPE_SESSION, (dvoid*)DB_USER_PWD, (ub4)strlen(DB_USER_PWD), OCI_ATTR_PASSWORD, h_oci_error);
if (OCI_SUCCESS != sw_rc) {
print_oci_error("error : set user password", h_oci_error);
break;
}
// 会话开始
sw_rc = OCISessionBegin(h_oci_context, h_oci_error, h_oci_user, OCI_CRED_RDBMS, OCI_DEFAULT);
// packet 21~26
if (OCI_SUCCESS != sw_rc) {
print_oci_error("error : session begin", h_oci_error);
break;
}
// 在会话上设置用户信息
sw_rc = OCIAttrSet((dvoid*)h_oci_context, OCI_HTYPE_SVCCTX, (dvoid*)h_oci_user, (ub4)0, OCI_ATTR_SESSION, h_oci_error);
if (OCI_SUCCESS != sw_rc) {
print_oci_error("error : set user info on service handle", h_oci_error);
break;
}
// 干活
do_oci_task_ex(h_oci_env, h_oci_server, h_oci_error, h_oci_context, h_oci_user);
printf("ok : db operation over\r\n");
} while (0);
// 会话结束
sw_rc = OCISessionEnd(h_oci_context, h_oci_error, h_oci_user, OCI_DEFAULT);
// packet 39~41
if (OCI_SUCCESS != sw_rc) {
print_oci_error("error : end session", h_oci_error);
}
// 断开连接
sw_rc = OCIServerDetach(h_oci_server, h_oci_error, OCI_DEFAULT);
// packet 42`46
if (OCI_SUCCESS != sw_rc) {
print_oci_error("error : detach server", h_oci_error);
}
// --------------------------------------------------------------------------------
// 释放句柄
// --------------------------------------------------------------------------------
sw_rc = OCIHandleFree((void*)h_oci_user, OCI_HTYPE_SESSION);
if (OCI_SUCCESS != sw_rc) {
print_oci_error("error : OCI_HTYPE_SESSION", h_oci_error);
}
sw_rc = OCIHandleFree((void*)h_oci_context, OCI_HTYPE_SVCCTX);
if (OCI_SUCCESS != sw_rc) {
print_oci_error("error : OCI_HTYPE_SVCCTX", h_oci_error);
}
sw_rc = OCIHandleFree((void*)h_oci_error, OCI_HTYPE_ERROR);
if (OCI_SUCCESS != sw_rc) {
print_oci_error("error : OCI_HTYPE_ERROR", NULL);
}
sw_rc = OCIHandleFree((void*)h_oci_server, OCI_HTYPE_SERVER);
if (OCI_SUCCESS != sw_rc) {
print_oci_error("error : OCI_HTYPE_SERVER", NULL);
}
sw_rc = OCIHandleFree((void*)h_oci_env, OCI_HTYPE_ENV);
if (OCI_SUCCESS != sw_rc) {
print_oci_error("error : OCI_HTYPE_ENV", NULL);
}
}
std::string get_oci_error(const char* psz_tip, OCIError* h_oci_error)
{
char sz_buf[4096] = { '\0' };
sword sw_rc = 0;
sb4 errcode = 0;
std::string str_rc = "";
if (NULL != psz_tip) {
str_rc += psz_tip;
}
str_rc += "\r\n";
if (NULL != h_oci_error) {
sw_rc = OCIErrorGet(
h_oci_error,
(ub4)1,
(text*)NULL,
&errcode,
(OraText*)sz_buf,
(ub4)sizeof(sz_buf),
(b4)OCI_HTYPE_ERROR);
if (OCI_SUCCESS == sw_rc) {
str_rc += "\t";
str_rc += sz_buf;
}
}
return str_rc;
}
void print_oci_error(const char* psz_tip, OCIError* h_oci_error)
{
printf("%s\r\n", get_oci_error(psz_tip, h_oci_error).c_str());
}
void do_oci_task_ex(OCIEnv* h_oci_env, OCIServer* h_oci_server, OCIError* h_oci_error, OCISvcCtx* h_oci_context, OCISession* h_oci_user)
{
char sz_sql[4096] = { '\0' };
char c_tmp = '\0';
int i = 0;
do {
task_readme();
fflush(stdin);
memset(sz_sql, 0, sizeof(sz_sql));
do {
c_tmp = _getch();
if ((c_tmp == '\r') || (strlen(sz_sql) >= (sizeof(sz_sql) - 1))) {
printf("\n");
break;
}
if ('\b' == c_tmp) {
task_readme();
fflush(stdin);
memset(sz_sql, 0, sizeof(sz_sql));
continue;
}
sz_sql[strlen(sz_sql)] = c_tmp;
printf("%c", c_tmp);
} while (1);
printf("input is : %s\n", sz_sql);
if (0 == strcmp(CMD_QUIT, sz_sql)) {
printf("user command to quit\n");
break;
}
else if (0 == strcmp(CMD_TEST_SELECT_ALL_BUILD_IN_TABLE, sz_sql)) {
for (i = 0; i < sizeof(psz_ary_orcl_all_tbl_name) / sizeof(psz_ary_orcl_all_tbl_name[0]); i++) {
if (NULL == psz_ary_orcl_all_tbl_name[i]) {
break;
}
printf("test task [%d] begin ...\n", i);
memset(sz_sql, 0, sizeof(sz_sql));
sprintf(sz_sql, "select * from %s", psz_ary_orcl_all_tbl_name[i]);
printf("execut sql \"%s\" ...\r\n", sz_sql);
do_oci_task(sz_sql, h_oci_env, h_oci_server, h_oci_error, h_oci_context, h_oci_user);
printf("test task [%d] end ...\n", i);
}
}
else if (0 == strcmp(CMD_TEST_SQL, sz_sql)) {
for (i = 0; i < sizeof(psz_ary_case_sql) / sizeof(psz_ary_case_sql[0]); i++) {
if (NULL == psz_ary_case_sql[i]) {
break;
}
printf("test task [%d] begin ...\n", i);
memset(sz_sql, 0, sizeof(sz_sql));
sprintf(sz_sql, "%s", psz_ary_case_sql[i]);
printf("execut sql \"%s\" ...\r\n", sz_sql);
do_oci_task(sz_sql, h_oci_env, h_oci_server, h_oci_error, h_oci_context, h_oci_user);
printf("test task [%d] end ...\n", i);
}
}
else {
printf("execut sql \"%s\" ...\r\n", sz_sql);
do_oci_task(sz_sql, h_oci_env, h_oci_server, h_oci_error, h_oci_context, h_oci_user);
}
} while (1);
}
void task_readme()
{
printf("\n");
printf("// --------------------------------------------------------------------------------\n");
printf("// 任务列表:\n");
printf("// 输入SQL语句, 回车, 执行输入的SQL语句\n");
printf("// 输入'" CMD_TEST_SELECT_ALL_BUILD_IN_TABLE "', 对预置的表名数组进行select * 操作\n");
printf("// 输入'" CMD_TEST_SQL "', 执行预置的sql语句数组\n");
printf("// 输入'" CMD_QUIT "'退出\n");
printf("// --------------------------------------------------------------------------------\n");
}
void do_oci_task(const char* psz_sql, OCIEnv* h_oci_env, OCIServer* h_oci_server, OCIError* h_oci_error, OCISvcCtx* h_oci_context, OCISession* h_oci_user)
{
OraText* ora_text_select = (OraText*)psz_sql;
sword sw_rc = 0;
OCIStmt* h_oci_stmt = NULL; // SQL语句句柄
OCIDefine* h_oci_define = NULL;
OCIParam* h_oci_param = NULL;
OraText* colName = NULL;
ub4 colNameSize = 0;
ub2 stmt_type = 0; // SQL语句类型
ub4 fieldCount = 0; // 结果集字段数量
ub4 i_index = 0;
int i_row_index = 0;
ub4 col_len = 0;
ub4 col_lenSize = 0;
int dtypeNew = 0;
ub4 dtype = 0;
do {
if ((NULL == h_oci_env)
|| (NULL == h_oci_server)
|| (NULL == h_oci_error)
|| (NULL == h_oci_user)
|| (NULL == h_oci_context)) {
printf("oci handle invalid\r\n");
break;
}
printf("do oci task\r\n");
if (NULL != psz_sql) {
SetConsoleTitleA(psz_sql);
}
if (0 == strlen(psz_sql)) {
printf("please input sql\n");
break;
}
// 建立SQL语句句柄
sw_rc = OCIHandleAlloc(h_oci_env, (void**)&h_oci_stmt, OCI_HTYPE_STMT, (size_t)0, (dvoid**)0);
if (OCI_SUCCESS != sw_rc) {
print_oci_error("error : create OCI_HTYPE_STMT", h_oci_error);
break;
}
// 准备SQL语句
sw_rc = OCIStmtPrepare(h_oci_stmt, h_oci_error, ora_text_select, (ub4)strlen((const char*)ora_text_select), (ub4)OCI_NTV_SYNTAX, (ub4)OCI_DEFAULT);
if (OCI_SUCCESS != sw_rc) {
print_oci_error("error : OCIStmtPrepare", h_oci_error);
break;
}
// 执行SQL
printf("sw_rc = OCIStmtExecute(h_oci_context, h_oci_stmt, h_oci_error, (ub4)0, (ub4)0, (OCISnapshot*)0, (OCISnapshot*)0, OCI_DEFAULT);\r\n");
sw_rc = OCIStmtExecute(h_oci_context, h_oci_stmt, h_oci_error, (ub4)0, (ub4)0, (OCISnapshot*)0, (OCISnapshot*)0, OCI_DEFAULT);
// packet 27~29
if (OCI_SUCCESS != sw_rc) {
print_oci_error("error : OCIStmtExecute", h_oci_error);
break;
}
// printf("press any key to get result set\n");
// _getch();
// 获取SQL语句类型
sw_rc = OCIAttrGet(h_oci_stmt, OCI_HTYPE_STMT, &stmt_type, NULL, OCI_ATTR_STMT_TYPE, h_oci_error);
if (OCI_SUCCESS != sw_rc) {
print_oci_error("error : OCI_ATTR_STMT_TYPE", h_oci_error);
break;
}
// 取结果集列信息
if (OCI_STMT_SELECT == stmt_type) {
printf("query result set :\r\n");
printf("sw_rc = OCIAttrGet(h_oci_stmt, OCI_HTYPE_STMT, &fieldCount, NULL, OCI_ATTR_PARAM_COUNT, h_oci_error);\r\n");
sw_rc = OCIAttrGet(h_oci_stmt, OCI_HTYPE_STMT, &fieldCount, NULL, OCI_ATTR_PARAM_COUNT, h_oci_error);
if (OCI_SUCCESS != sw_rc) {
print_oci_error("error : OCI_ATTR_STMT_TYPE", h_oci_error);
break;
}
printf("query result set columns = %d\r\n", fieldCount);
g_i_columns_cnt = fieldCount;
for (i_index = 0; i_index < fieldCount; i_index++) {
h_oci_param = NULL;
dtype = 0;
printf("columns %d : \r\n", i_index + 1);
ub4 dtypeSize = sizeof(dtype);
sw_rc = OCIParamGet(h_oci_stmt, OCI_HTYPE_STMT, h_oci_error, (void**)&h_oci_param, i_index + 1);
if (OCI_SUCCESS != sw_rc)
{
print_oci_error("error : OCIParamGet", h_oci_error);
break;
}
sw_rc = OCIAttrGet(h_oci_param, OCI_DTYPE_PARAM, &dtype, &dtypeSize, OCI_ATTR_DATA_TYPE, h_oci_error);
if (OCI_SUCCESS != sw_rc)
{
print_oci_error("error : OCIAttrGet", h_oci_error);
break;
}
g_col_info[i_index].m_i_data_type_org = (int)dtype;
printf("\tg_col_info[%d].m_i_data_type_org = %d\r\n", i_index, g_col_info[i_index].m_i_data_type_org);
colName = NULL;
colNameSize = sizeof(colName);
sw_rc = OCIAttrGet(h_oci_param, OCI_DTYPE_PARAM, &colName, &colNameSize, OCI_ATTR_NAME, h_oci_error);
if (OCI_SUCCESS != sw_rc)
{
print_oci_error("error : OCIAttrGet", h_oci_error);
break;
}
g_col_info[i_index].m_i_len_name = (int)colNameSize;
g_col_info[i_index].m_psz_name = new char[g_col_info[i_index].m_i_len_name + 1];
memset(g_col_info[i_index].m_psz_name, 0, g_col_info[i_index].m_i_len_name + 1);
// strcpy_s(g_col_info[i_index].m_psz_name, g_col_info[i_index].m_i_len_name, (char*)colName);
memcpy(g_col_info[i_index].m_psz_name, (char*)colName, g_col_info[i_index].m_i_len_name);
printf("\tname = %s\r\n", (char*)g_col_info[i_index].m_psz_name);
printf("\tname len = %d\r\n", (int)g_col_info[i_index].m_i_len_name);
col_len = 0;
col_lenSize = sizeof(col_len);
dtypeNew = SQLT_CHR;
switch (dtype)
{
case SQLT_DAT:
case SQLT_DATE:
case SQLT_TIME:
case SQLT_TIME_TZ:
case SQLT_TIMESTAMP:
case SQLT_TIMESTAMP_TZ:
case SQLT_TIMESTAMP_LTZ:
{
dtypeNew = SQLT_ODT;
col_len = sizeof(OCIDate);
}
break;
case SQLT_CLOB:
case SQLT_CHR:
case SQLT_INT:
case SQLT_UIN:
case SQLT_NUM:
case SQLT_FLT:
case SQLT_STR:
case SQLT_VNU:
case SQLT_LNG:
case SQLT_VCS:
case SQLT_LVC:
case SQLT_AFC:
case SQLT_AVC:
{
sw_rc = OCIAttrGet(h_oci_param, OCI_DTYPE_PARAM, &col_len, &col_lenSize, OCI_ATTR_DATA_SIZE, h_oci_error);
if (OCI_SUCCESS != sw_rc)
{
print_oci_error("error : OCIAttrGet", h_oci_error);
break;
}
printf("\tdata len = %d\r\n", (int)col_len);
dtypeNew = SQLT_CHR;
}
break;
default:
// assert(0);
break;
}
g_col_info[i_index].m_i_data_type_now = (int)dtypeNew;
printf("\tg_col_info[%d].m_i_data_type_now = %d\r\n", i_index, g_col_info[i_index].m_i_data_type_now);
g_col_info[i_index].m_i_len_data = (int)col_len;
g_col_info[i_index].m_psz_data = new char[g_col_info[i_index].m_i_len_data + 1];
memset(g_col_info[i_index].m_psz_data, 0, g_col_info[i_index].m_i_len_data + 1);
h_oci_define = NULL;
sw_rc = OCIDefineByPos(h_oci_stmt, &h_oci_define, h_oci_error, i_index + 1, g_col_info[i_index].m_psz_data, col_len * sizeof(char), dtypeNew, 0, 0, 0, OCI_DEFAULT);
if (OCI_SUCCESS != sw_rc)
{
print_oci_error("error : OCIDefineByPos", h_oci_error);
break;
}
printf("----------------------------------------\r\n");
}
}
// 遍历行集
i_row_index = 0;
do {
sw_rc = OCIStmtFetch(h_oci_stmt, h_oci_error, 1, OCI_FETCH_NEXT, OCI_DEFAULT);
// 如果是查第一行，并不发收包，可能执行后，返回的数据中已经包含第一行
// packet 30~32 如果数据不够了，会继续请求包。
// packet 33~35
// packet 36~38
if (OCI_NO_DATA == sw_rc)
{
// 只有OCI_NO_DATA代表行集读完了
printf("OCI_NO_DATA\n");
break;
}
if (OCI_SUCCESS != sw_rc)
{
printf("error : sw_rc = %d\n", sw_rc);
// sw_rc is -1
print_oci_error("OCIStmtFetch", h_oci_error);
// ORA-01405: 提取的列值为 NULL
// 只是这行有问题, 可以继续读下一行
// 看了表内容, 确实有的字段是NULL
continue;
}
for (i_index = 0; i_index != g_i_columns_cnt; i_index++)
{
printf("row[%d]col[%d] = %s\r\n", i_row_index, i_index, (NULL != g_col_info[i_index].m_psz_data) ? g_col_info[i_index].m_psz_data : "NULL");
}
printf("----------------------------------------\r\n");
i_row_index++;
// break; // @todo for debug, only show one row
} while (1);
// 释放资源
for (i_index = 0; i_index != g_i_columns_cnt; i_index++)
{
g_col_info[i_index].clear();
}
} while (0);
printf("press any key to end the query\n");
_getch();
printf("will be end query\n");
Sleep(1000);
// 释放oci句柄
if (NULL != h_oci_stmt) {
sw_rc = OCIHandleFree((void*)h_oci_stmt, OCI_HTYPE_STMT);
}
if (OCI_SUCCESS != sw_rc) {
print_oci_error("error : OCI_HTYPE_STMT", NULL);
}
}