【YashanDB知识库】YashanDB-OCI-快速上手

本文内容来自YashanDB官网，具体内容请见https://www.yashandb.com/newsinfo/7488285.html?templateId=1718516

背景

OCI 是Oracle调用接口（Oracle Call Interface 简称OCI) 提供了一组对Oracle数据库进行存取的接口子例程（函数），通过在第三方设计语言（如C语言）中进行调用可达到存取ORACLE数据库的目的。

崖山数据库基于Oracle的OCI接口，开发了强兼容的接口，应用可以做比较少的改动，平滑地迁移到崖山数据库。

主要优点

1、Oracle数据库服务器特性中的即时可用性

2、企业级的性能和可伸缩性

3、强健的安全模型

4、在所有运行Oracle的平台上的可移植性。

本文将介绍cmake 方式编译崖山数据库，帮助读者快速上手崖山数据库的OCI接口，并在使用OCI解决实际工作遇到的问题。

环境准备

1、配置yashandb的C驱动和 OCI 文件

2、准备Oracle的OCI软件包，需要下载两个:

其一是instantclient-basic-linux.x64-21.14.0.0.0dbru.zip,

其二是instantclient-sdk-linux.x64-21.14.0.0.0dbru.zip

3、机器提前安装GDB和CMAKE工具

如何编译yashandb的OCI代码？

接下来，以官网OCI示例代码为例，快速上手编译Yashandb的OCI代码

准备编译前命令

编辑 CMakeList.txt，它是CMAKE工程编译的声明命令文件

点击查看代码

[yashan103@localhost oci_dir]$ cat CMakeLists.txt

cmake_minimum_required(VERSION 2.8.12)

# CMAKE的工程名

project(YAS_OCI_TEST)

set(CMAKE_CXX_STANDARD 11)

set(CMAKE_CXX_STANDARD_REQUIRED ON)

set(BUILD_USE_64BITS on)

set(CMAKE_CONFIGURATION_TYPES "Debug" CACHE STRING "" FORCE)

set(CMAKE_BUILD_TYPE "Debug" CACHE STRING "" FORCE)

#设置OCI接口的源代码路径

SET(LIBHELLO_SRC

./bb.c

)

#查找库文件

find_library(YAS_OCI_LIBRARY NAMES yas_oci PATHS /home/yashan103/oci_lib/yashandb-oci-23.2.1.100-4-gecc0e02-linux-x86_64)

#确认库文件是否找到

if(NOT YAS_OCI_LIBRARY)

   message(FATAL_ERROR "Could not find libyas_oci.so")

endif()

# 添加OCI.h的头文件

include_directories(/home/yashan103/instantclient_21_12/sdk/include)

##执行编译操作

add_executable(YAS_OCI_TEST ${LIBHELLO_SRC})


##添加OCI的yashandb依赖文件

target_link_libraries(YAS_OCI_TEST ${YAS_OCI_LIBRARY})

[yashan103@localhost oci_dir]$

[yashan103@localhost oci_dir]$

[yashan103@localhost oci_dir]$ cat CMakeLists.txt

cmake_minimum_required(VERSION 2.8.12)

# CMAKE的工程名

project(YAS_OCI_TEST)

set(CMAKE_CXX_STANDARD 11)

set(CMAKE_CXX_STANDARD_REQUIRED ON)

set(BUILD_USE_64BITS on)

set(CMAKE_CONFIGURATION_TYPES "Debug" CACHE STRING "" FORCE)

set(CMAKE_BUILD_TYPE "Debug" CACHE STRING "" FORCE)

#设置OCI接口的源代码路径

SET(LIBHELLO_SRC

./bb.c

)

#查找库文件

find_library(YAS_OCI_LIBRARY NAMES yas_oci PATHS /home/yashan103/oci_lib/yashandb-oci-23.2.1.100-4-gecc0e02-linux-x86_64)

#确认库文件是否找到

if(NOT YAS_OCI_LIBRARY)

   message(FATAL_ERROR "Could not find libyas_oci.so")

endif()

# 添加OCI.h的头文件

include_directories(/home/yashan103/instantclient_21_12/sdk/include)

##执行编译操作

add_executable(YAS_OCI_TEST ${LIBHELLO_SRC})

##添加OCI的yashandb依赖文件

target_link_libraries(YAS_OCI_TEST ${YAS_OCI_LIBRARY})

准备Oracle的依赖文件点击查看代码

[yashan103@localhost instantclient_21_12]$ ll

total 272500

-rwxr-xr-x. 1 yashan103 yashan103 42192 Dec 21 2023 adrci

-rw-r--r--. 1 yashan103 yashan103 5780 Dec 21 2023 BASIC_LICENSE

-rw-r--r--. 1 yashan103 yashan103 1634 Dec 21 2023 BASIC_README

drwxrwxr-x. 2 yashan103 yashan103 55 Apr 1 10:46 bin

-rwxr-xr-x. 1 yashan103 yashan103 59544 Dec 21 2023 genezi

drwxrwxr-x. 2 yashan103 yashan103 6 Aug 5 21:38 include

drwxrwxr-x. 2 yashan103 yashan103 6 Aug 5 21:38 lib

lrwxrwxrwx. 1 yashan103 yashan103 21 Jul 23 11:22 libclntshcore.so -> libclntshcore.so.21.1

lrwxrwxrwx. 1 yashan103 yashan103 21 Jul 23 11:22 libclntshcore.so.12.1 -> libclntshcore.so.21.1

lrwxrwxrwx. 1 yashan103 yashan103 21 Jul 23 11:22 libclntshcore.so.18.1 -> libclntshcore.so.21.1

lrwxrwxrwx. 1 yashan103 yashan103 21 Jul 23 11:22 libclntshcore.so.19.1 -> libclntshcore.so.21.1

lrwxrwxrwx. 1 yashan103 yashan103 21 Jul 23 11:22 libclntshcore.so.20.1 -> libclntshcore.so.21.1

-rwxr-xr-x. 1 yashan103 yashan103 8108592 Dec 21 2023 libclntshcore.so.21.1

lrwxrwxrwx. 1 yashan103 yashan103 17 Jul 23 11:22 libclntsh.so -> libclntsh.so.21.1

lrwxrwxrwx. 1 yashan103 yashan103 17 Jul 23 11:22 libclntsh.so.10.1 -> libclntsh.so.21.1

lrwxrwxrwx. 1 yashan103 yashan103 17 Jul 23 11:22 libclntsh.so.11.1 -> libclntsh.so.21.1

lrwxrwxrwx. 1 yashan103 yashan103 17 Jul 23 11:22 libclntsh.so.12.1 -> libclntsh.so.21.1

lrwxrwxrwx. 1 yashan103 yashan103 17 Jul 23 11:22 libclntsh.so.18.1 -> libclntsh.so.21.1

lrwxrwxrwx. 1 yashan103 yashan103 17 Jul 23 11:22 libclntsh.so.19.1 -> libclntsh.so.21.1

lrwxrwxrwx. 1 yashan103 yashan103 17 Jul 23 11:22 libclntsh.so.20.1 -> libclntsh.so.21.1

-rwxr-xr-x. 1 yashan103 yashan103 84191392 Dec 21 2023 libclntsh.so.21.1

-rw-r--r--. 1 yashan103 yashan103 3412144 Apr 1 10:46 libcrypto.so.1.1

lrwxrwxrwx. 1 yashan103 yashan103 14 Apr 1 10:46 libcsvexp.so -> libcsvexp.so.0

lrwxrwxrwx. 1 yashan103 yashan103 20 Apr 1 10:46 libcsvexp.so.0 -> libcsvexp.so.1.1.100

-rwxr-xr-x. 1 yashan103 yashan103 241088 Apr 1 10:46 libcsvexp.so.1.1.100

lrwxrwxrwx. 1 yashan103 yashan103 15 Apr 1 10:46 liblz4.so -> liblz4.so.1.9.3

lrwxrwxrwx. 1 yashan103 yashan103 15 Apr 1 10:46 liblz4.so.1 -> liblz4.so.1.9.3

-rw-r--r--. 1 yashan103 yashan103 236216 Apr 1 10:46 liblz4.so.1.9.3

-rwxr-xr-x. 1 yashan103 yashan103 5844176 Dec 21 2023 libnnz21.so

lrwxrwxrwx. 1 yashan103 yashan103 21 Jul 23 11:22 libocci_gcc53.so -> libocci_gcc53.so.21.1

-rwxr-xr-x. 1 yashan103 yashan103 956832 Dec 21 2023 libocci_gcc53.so.21.1

lrwxrwxrwx. 1 yashan103 yashan103 15 Jul 23 11:22 libocci.so -> libocci.so.21.1

lrwxrwxrwx. 1 yashan103 yashan103 15 Jul 23 11:22 libocci.so.10.1 -> libocci.so.21.1

lrwxrwxrwx. 1 yashan103 yashan103 15 Jul 23 11:22 libocci.so.11.1 -> libocci.so.21.1

lrwxrwxrwx. 1 yashan103 yashan103 15 Jul 23 11:22 libocci.so.12.1 -> libocci.so.21.1

lrwxrwxrwx. 1 yashan103 yashan103 15 Jul 23 11:22 libocci.so.18.1 -> libocci.so.21.1

lrwxrwxrwx. 1 yashan103 yashan103 15 Jul 23 11:22 libocci.so.19.1 -> libocci.so.21.1

lrwxrwxrwx. 1 yashan103 yashan103 15 Jul 23 11:22 libocci.so.20.1 -> libocci.so.21.1

-rwxr-xr-x. 1 yashan103 yashan103 2374808 Dec 21 2023 libocci.so.21.1

-rwxr-xr-x. 1 yashan103 yashan103 142717504 Dec 21 2023 libociei.so

-r-xr-xr-x. 1 yashan103 yashan103 153600 Dec 21 2023 libocijdbc21.so

-rwxr-xr-x. 1 yashan103 yashan103 116208 Dec 21 2023 liboramysql.so

-rw-r--r--. 1 yashan103 yashan103 771118 Apr 1 10:46 libpcre2-8.a

lrwxrwxrwx. 1 yashan103 yashan103 20 Apr 1 10:46 libpcre2-8.so -> libpcre2-8.so.0.10.4

lrwxrwxrwx. 1 yashan103 yashan103 20 Apr 1 10:46 libpcre2-8.so.0 -> libpcre2-8.so.0.10.4

-rw-r--r--. 1 yashan103 yashan103 383080 Apr 1 10:46 libpcre2-8.so.0.10.4

lrwxrwxrwx. 1 yashan103 yashan103 13 Apr 1 10:46 libssl.so -> libssl.so.1.1

-rw-r--r--. 1 yashan103 yashan103 693200 Apr 1 10:46 libssl.so.1.1

lrwxrwxrwx. 1 yashan103 yashan103 14 Apr 1 10:46 libyascli.so -> libyascli.so.0

lrwxrwxrwx. 1 yashan103 yashan103 20 Apr 1 10:46 libyascli.so.0 -> libyascli.so.1.1.100

-rwxr-xr-x. 1 yashan103 yashan103 2699208 Apr 1 10:46 libyascli.so.1.1.100

lrwxrwxrwx. 1 yashan103 yashan103 17 Apr 1 10:46 libyas_infra.so -> libyas_infra.so.0

lrwxrwxrwx. 1 yashan103 yashan103 23 Apr 1 10:46 libyas_infra.so.0 -> libyas_infra.so.1.1.100

-rwxr-xr-x. 1 yashan103 yashan103 11305496 Apr 1 10:46 libyas_infra.so.1.1.100

-rwxrwxr-x. 1 yashan103 yashan103 597808 Aug 5 22:04 libyas_oci.so

-rwxr-xr-x. 1 yashan103 yashan103 408008 Apr 1 10:46 libyex_client.so

lrwxrwxrwx. 1 yashan103 yashan103 16 Apr 1 10:46 libzstd.so -> libzstd.so.1.5.2

lrwxrwxrwx. 1 yashan103 yashan103 16 Apr 1 10:46 libzstd.so.1 -> libzstd.so.1.5.2

-rw-r--r--. 1 yashan103 yashan103 1159832 Apr 1 10:46 libzstd.so.1.5.2

drwxr-xr-x. 3 yashan103 yashan103 19 Dec 21 2023 network

-rw-r--r--. 1 yashan103 yashan103 5245454 Dec 21 2023 ojdbc11.jar

-rw-r--r--. 1 yashan103 yashan103 5153068 Dec 21 2023 ojdbc8.jar

drwxr-xr-x. 5 yashan103 yashan103 79 Dec 21 2023 sdk

-rw-r--r--. 1 yashan103 yashan103 5780 Dec 21 2023 SDK_LICENSE

-rw-rw-r--. 1 yashan103 yashan103 1628 Dec 21 2023 SDK_README

-rw-r--r--. 1 yashan103 yashan103 1805644 Dec 21 2023 ucp.jar

-rwxr-xr-x. 1 yashan103 yashan103 236176 Dec 21 2023 uidrvci

-rw-r--r--. 1 yashan103 yashan103 31869 Dec 21 2023 xstreams.jar

-rw-r--r--. 1 yashan103 yashan103 20076 Apr 1 10:46 yacli.h

准备Yashandb OCI 依赖文件

点击查看代码

[yashan103@localhost yashandb-oci-23.2.1.100-4-gecc0e02-linux-x86_64]$ pwd

/home/yashan103/oci_lib/yashandb-oci-23.2.1.100-4-gecc0e02-linux-x86_64

[yashan103@localhost yashandb-oci-23.2.1.100-4-gecc0e02-linux-x86_64]$ ll

total 600

-rwxrwxr-x. 1 yashan103 yashan103 597808 Jul 8 17:14 libyas_oci.so

-rwxrwxr-x. 1 yashan103 yashan103 13576 Jul 8 17:14 yasociconntest

执行编译命令

点击查看代码

[yashan103@localhost oci_dir]$ ll

total 32

-rw-rw-r--. 1 yashan103 yashan103 4534 Aug 5 23:03 bb.c

drwxrwxr-x. 5 yashan103 yashan103 4096 Aug 5 22:25 CMakeFiles

-rw-rw-r--. 1 yashan103 yashan103 861 Aug 5 23:05 CMakeLists.txt

-rwxrwxr-x. 1 yashan103 yashan103 15896 Aug 5 22:25 YAS_OCI_TEST

[yashan103@localhost oci_dir]$ cmake -B build .

-- Configuring done

-- Generating done

-- Build files have been written to: /home/yashan103/oci_dir

[yashan103@localhost oci_dir]$ make

Scanning dependencies of target YAS_OCI_TEST

[ 50%] Building C object CMakeFiles/YAS_OCI_TEST.dir/bb.c.o

[100%] Linking C executable YAS_OCI_TEST

[100%] Built target YAS_OCI_TEST

执行二进制软件

点击查看代码

[yashan103@localhost oci_dir]$ ./YAS_OCI_TEST

test succeed!

以一个OCI代码解释代码常用语法的含义

点击查看代码

#include <stdio.h>

#include <stdint.h>

#include <stdlib.h>

#include <string.h>

#include <oci.h>

 

 

// 调用OCI代码的CALL函数

#define OCI_TEST_CALL(ociFunc) \

    do { \

        sword r = ociFunc; \

        if (r != OCI_SUCCESS) { \

            checkerr(errhp, r); \

            return r; \

        } \

    } while (0)

 

static text* username = (text*)"sys";

static text* password = (text*)"Cod-2022";

static text* dbname = (text*)"CITEST";

 

static OCIEnv* envhp = NULL;

static OCIError* errhp = NULL;

static OCISvcCtx* svchp = NULL;

static OCISession* authp = NULL;

static OCIServer* srvhp = NULL;

 

// ## 检查代码执行是否返回异常的函数

void checkerr(OCIError* errhp, sword status)

{

    text errbuf[512];

    sb4 errcode = 0;

 

      // 根据status 判断OCI执行结果状态

    switch (status) {

        case OCI_SUCCESS:

            break;

        case OCI_SUCCESS_WITH_INFO:

            (void)printf("Error - OCI_SUCCESS_WITH_INFO\n");

            break;

        case OCI_NEED_DATA:

            (void)printf("Error - OCI_NEED_DATA\n");

            break;

        case OCI_NO_DATA:

            (void)printf("Error - OCI_NODATA\n");

            break;

        case OCI_ERROR:

            (void)OCIErrorGet((dvoid*)errhp, (ub4)1, (text*)NULL, &errcode, errbuf, (ub4)sizeof(errbuf),

                              OCI_HTYPE_ERROR);

            (void)printf("Error - %.*s\n", 512, errbuf);

            break;

        case OCI_INVALID_HANDLE:

            (void)printf("Error - OCI_INVALID_HANDLE\n");

            break;

        case OCI_STILL_EXECUTING:

            (void)printf("Error - OCI_STILL_EXECUTE\n");

            break;

        case OCI_CONTINUE:

            (void)printf("Error - OCI_CONTINUE\n");

            break;

        default:

            break;

    }

}

// 单行绑定导入数据

sword testSingleBind()

{

    OCIStmt* stmthp = NULL;

    // 申请一个句柄

    (void)OCIHandleAlloc((dvoid*)envhp, (dvoid**)&stmthp, OCI_HTYPE_STMT, (size_t)0, (dvoid**)0);

 

    OCIBind* bindp1 = NULL;

    OCIDefine* definep1 = NULL;

    ub4 intOut1[3] = {0, 1, 2};

 

    OraText* sql = "drop table if exists tbl_bind";

    // 类似JDBC的prepare statement

    //在 OCI（Oracle Call Interface）中，ub4 是 Oracle C 数据类型之一，它代表一个无符号的 4 字节（32位）整数。OCI 是 Oracle 数据库提供的编程接口，允许开发者使用 C 或 C++ 编写可以与 Oracle 数据库交互的程序。

 

    OCI_TEST_CALL(OCIStmtPrepare(stmthp, errhp, sql, (ub4)strlen((char*)sql), (ub4)OCI_NTV_SYNTAX, (ub4)OCI_DEFAULT));

    // 类似JDBC的执行

    OCI_TEST_CALL(OCIStmtExecute(svchp, stmthp, errhp, (ub4)1, (ub4)0, NULL, NULL, OCI_DEFAULT));

 

    sql = "create table tbl_bind(col1 int, col2 varchar(20))";

    OCI_TEST_CALL(OCIStmtPrepare(stmthp, errhp, sql, (ub4)strlen((char*)sql), (ub4)OCI_NTV_SYNTAX, (ub4)OCI_DEFAULT));

    OCI_TEST_CALL(OCIStmtExecute(svchp, stmthp, errhp, (ub4)1, (ub4)0, NULL, NULL, OCI_DEFAULT));

 

    sql = "insert into tbl_bind values (:1, '11')";

    OCI_TEST_CALL(OCIStmtPrepare(stmthp, errhp, sql, (ub4)strlen((char*)sql), (ub4)OCI_NTV_SYNTAX, (ub4)OCI_DEFAULT));

    OCI_TEST_CALL(OCIBindByPos(stmthp, &bindp1, errhp, (ub4)1, (dvoid*)intOut1, (sb4)sizeof(ub4), SQLT_INT, 0, 0, 0, 0, NULL, OCI_DEFAULT));

    OCI_TEST_CALL(OCIStmtExecute(svchp, stmthp, errhp, (ub4)3, (ub4)0, NULL, NULL, OCI_DEFAULT));

    

    ub4 rowcnt;

    OCI_TEST_CALL(OCIAttrGet((CONST dvoid*)stmthp, (ub4)OCI_HTYPE_STMT, (void*)&rowcnt, (ub4*)0, (ub4)OCI_ATTR_ROW_COUNT, errhp));

    if (rowcnt != 3) {

        return OCI_ERROR;

    }

   

    // 单行取数据

    sql = "select col1 + 99 from tbl_bind";

    OCI_TEST_CALL(OCIStmtPrepare(stmthp, errhp, sql, (ub4)strlen((char*)sql), (ub4)OCI_NTV_SYNTAX, (ub4)OCI_DEFAULT));

    OCI_TEST_CALL(OCIDefineByPos(stmthp, &definep1, errhp, (ub4)1, (dvoid*)intOut1, (sb4)sizeof(ub4), SQLT_INT, 0, 0, 0, OCI_DEFAULT));

    OCI_TEST_CALL(OCIStmtExecute(svchp, stmthp, errhp, (ub4)3, (ub4)0, NULL, NULL, OCI_DEFAULT));

    if (intOut1[0] != 99 || intOut1[1] != 100 || intOut1[2] != 101) {

        return OCI_ERROR;

    }

      //释放句柄

    (void)OCIHandleFree((dvoid*)stmthp, (ub4)OCI_HTYPE_STMT);

    return OCI_SUCCESS;

}

 

// 批量绑定导入数据

sword testBatchBind()

{

    OCIStmt* stmthp = NULL;

    (void)OCIHandleAlloc((dvoid*)envhp, (dvoid**)&stmthp, OCI_HTYPE_STMT, (size_t)0, (dvoid**)0);

 

    OCIBind* bindp = NULL;

    OCIDefine* definep = NULL;

 

    sb1 intIn1[4];

    sb2 ind1[4];

    ub2 rlen1[4];

 

    OraText* sql = "drop table if exists tbl_bind";

    OCI_TEST_CALL(OCIStmtPrepare(stmthp, errhp, sql, (ub4)strlen((char*)sql), (ub4)OCI_NTV_SYNTAX, (ub4)OCI_DEFAULT));

    OCI_TEST_CALL(OCIStmtExecute(svchp, stmthp, errhp, (ub4)1, (ub4)0, NULL, NULL, OCI_DEFAULT));

 

    sql = "create table tbl_bind(col1 bigint)";

    OCI_TEST_CALL(OCIStmtPrepare(stmthp, errhp, sql, (ub4)strlen((char*)sql), (ub4)OCI_NTV_SYNTAX, (ub4)OCI_DEFAULT));

    OCI_TEST_CALL(OCIStmtExecute(svchp, stmthp, errhp, (ub4)1, (ub4)0, NULL, NULL, OCI_DEFAULT));

 

    intIn1[0] = 0;

    intIn1[1] = 1;

    intIn1[2] = 2;

 

    ind1[0] = 0;

    ind1[1] = 0;

    ind1[2] = 0;

 

    rlen1[0] = 1;

    rlen1[1] = 1;

    rlen1[2] = 1;

 

    OraText* sql1 = "insert into tbl_bind values (:1)";

    OCI_TEST_CALL(OCIStmtPrepare(stmthp, errhp, sql1, (ub4)strlen((char*)sql1), (ub4)OCI_NTV_SYNTAX, (ub4)OCI_DEFAULT));

    OCI_TEST_CALL(OCIBindByPos(stmthp, &bindp, errhp, (ub4)1, (dvoid*)intIn1, (sb4)sizeof(sb1), SQLT_INT, ind1, rlen1, 0, 0, NULL, OCI_DEFAULT));

    OCI_TEST_CALL(OCIStmtExecute(svchp, stmthp, errhp, (ub4)3, (ub4)0, NULL, NULL, OCI_DEFAULT));

    

    // 批量取数据

    OraText* sql2 = "select col1 from tbl_bind order by rowid";

    OCI_TEST_CALL(OCIStmtPrepare(stmthp, errhp, sql2, (ub4)strlen((char*)sql2), (ub4)OCI_NTV_SYNTAX, (ub4)OCI_DEFAULT));

    OCI_TEST_CALL(OCIDefineByPos(stmthp, &definep, errhp, (ub4)1, (dvoid*)intIn1, (sb4)sizeof(sb1), SQLT_INT, ind1, rlen1, 0, OCI_DEFAULT));

    OCI_TEST_CALL(OCIStmtExecute(svchp, stmthp, errhp, (ub4)3, (ub4)0, NULL, NULL, OCI_DEFAULT));

 

    if (intIn1[0] != 0 || intIn1[1] != 1 || intIn1[2] != 2) {

        return OCI_ERROR;

    }

 

    if (ind1[0] != 0 || ind1[1] != 0 || ind1[2] != 0) {

        return OCI_ERROR;

    }

 

    if (rlen1[0] != 1 || rlen1[1] != 1 || rlen1[2] != 1) {

        return OCI_ERROR;

    }

    

    (void)OCIHandleFree((dvoid*)stmthp, (ub4)OCI_HTYPE_STMT);

    return OCI_SUCCESS;

}

 

// 连接数据库

sword testConnect()

{

    sword errcode = 0;

 

    errcode = OCIEnvCreate((OCIEnv**)&envhp, (ub4)OCI_THREADED, (dvoid*)0, (dvoid * (*)(dvoid*, size_t))0,

                     (dvoid * (*)(dvoid*, dvoid*, size_t))0, (void (*)(dvoid*, dvoid*))0, (size_t)0, (dvoid**)0);

 

    if (errcode != 0) {

        (void)printf("OCIEnvCreate failed with errcode = %d.\n", errcode);

        return OCI_ERROR;

    }

 

    (void)OCIHandleAlloc((dvoid*)envhp, (dvoid**)&errhp, OCI_HTYPE_ERROR, (size_t)0, (dvoid**)0);

    (void)OCIHandleAlloc((dvoid*)envhp, (dvoid**)&svchp, OCI_HTYPE_SVCCTX, (size_t)0, (dvoid**)0);

    (void)OCIHandleAlloc((dvoid*)envhp, (dvoid**)&srvhp, OCI_HTYPE_SERVER, (size_t)0, (dvoid**)0);

 

    OCI_TEST_CALL(OCIServerAttach(srvhp, errhp, (text*)dbname, (sb4)strlen((char*)dbname), 0));

    (void)OCIAttrSet((dvoid*)svchp, OCI_HTYPE_SVCCTX, (dvoid*)srvhp, (ub4)0, OCI_ATTR_SERVER, (OCIError*)errhp);

 

    (void)OCIHandleAlloc((dvoid*)envhp, (dvoid**)&authp, (ub4)OCI_HTYPE_SESSION, (size_t)0, (dvoid**)0);

    (void)OCIAttrSet((dvoid*)authp, (ub4)OCI_HTYPE_SESSION, (dvoid*)username, (ub4)strlen((char*)username), (ub4)OCI_ATTR_USERNAME, errhp);

    (void)OCIAttrSet((dvoid*)authp, (ub4)OCI_HTYPE_SESSION, (dvoid*)password, (ub4)strlen((char*)password), (ub4)OCI_ATTR_PASSWORD, errhp);

 

    OCI_TEST_CALL(OCISessionBegin(svchp, errhp, authp, OCI_CRED_RDBMS, (ub4)OCI_DEFAULT));

    (void)OCIAttrSet((dvoid*)svchp, (ub4)OCI_HTYPE_SVCCTX, (dvoid*)authp, (ub4)0, (ub4)OCI_ATTR_SESSION, errhp);

 

    return OCI_SUCCESS;

}

 

// 关闭数据库连接

sword testDisconnect()

{

    OCI_TEST_CALL(OCISessionEnd(svchp, errhp, authp, (ub4)0));

    OCI_TEST_CALL(OCIServerDetach(srvhp, errhp, (ub4)OCI_DEFAULT));

 

    (void)OCIHandleFree((dvoid*)authp, (ub4)OCI_HTYPE_SESSION);

    (void)OCIHandleFree((dvoid*)srvhp, (ub4)OCI_HTYPE_SERVER);

    (void)OCIHandleFree((dvoid*)svchp, (ub4)OCI_HTYPE_SVCCTX);

    (void)OCIHandleFree((dvoid*)errhp, (ub4)OCI_HTYPE_ERROR);

    (void)OCIHandleFree((dvoid*)envhp, (ub4)OCI_HTYPE_ENV);

 

    return OCI_SUCCESS;

}

sword runTest()

{

    if (testConnect() != OCI_SUCCESS) {

        return 1;

    }

    if (testSingleBind() != OCI_SUCCESS) {

        return 2;

    }

    if (testBatchBind() != OCI_SUCCESS) {

        return 3;

    }

    if (testDisconnect() != OCI_SUCCESS) {

        return 5;

    }

    return 0;

}

 

int main(argc, argv)

int argc;

char* argv[];

{

    sword runResult = runTest();

    if (runResult == 0) {

        printf("test succeed!\n");

    } else {

        printf("test failed! failed test num : %d\n", runResult);

    }

    return runResult;

}

参考资料

https://www.yashandb.com/newsinfo/7488285.html?templateId=1718516