C编写的OCI连接Oracle数据库

linux下用C编写的OCI连接Oracle数据库程序代码

2009-11-28 15:57206人阅读评论(0)收藏举报在Oracle 建立数据库

create table employees(employee_id number(3), name varchar2(20), sex varchar2(5), birthday date);

alter session set nls_date_format = 'yyyy-mm-dd';

insert into employees values('101', '耳温枪', 'na', '1999-05-03');

insert into employees values('102', 'xiaoli ', 'na', '1999-02-03');

insert into employees values('103', 'xiaozhang ', '男', '1999-02-03');

insert into employees values('104', '五千万', '男', '1999-02-03');

insert into employees values('105', '问问', '女', '1999-02-03');

insert into employees values('106', '阿散酸', '女', '1999-02-03');

insert into employees values('107', '阿斯顿', '男', '1999-02-03');

insert into employees values('108', '撒旦', 'na', '2001-5-05');

insert into employees values ('001','张三','三','2001-07-05');

insert into employees values('111','张三','一','2003-02-08');

OCI代码：

/*gcc -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64

-I${ORACLE_HOME}/rdbms/public -I${ORACLE_HOME}/rdbms/demo

-L${ORACLE_HOME}/lib -lclntsh -o oracle_test oracle_test.c

*/

#include

#include

#include

#include

static OCIEnv *p_env;

static OCIError *p_err;

static OCISvcCtx *p_svc;

static OCIStmt *p_sql;

static OCIDefine *p_dfn = (OCIDefine *) 0;

static OCIBind *p_bnd = (OCIBind *) 0;

int main()

{

int p_bvi;

char *p_sli;

char *p_sli1;

int rc;

char errbuf[100];

int errcode;

char mysql[20];

p_sli=(char *)malloc(20);

memset(p_sli,0,20);

p_sli1=(char *)malloc(20);

memset(p_sli1,0,20);

/* Initialize OCI evironment*/

rc = OCIEnvCreate((OCIEnv **) &p_env,OCI_DEFAULT,(dvoid *)0,

(dvoid * (*)(dvoid *, size_t)) 0,

(dvoid * (*)(dvoid *, dvoid *, size_t))0,

(void (*)(dvoid *, dvoid *)) 0,

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

/* Initialize handles */

rc = OCIHandleAlloc( (dvoid *) p_env, (dvoid **) &p_err, OCI_HTYPE_ERROR,

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

rc = OCIHandleAlloc( (dvoid *) p_env, (dvoid **) &p_svc, OCI_HTYPE_SVCCTX,

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

/* Connect to database server */

rc = OCILogon(p_env, p_err, &p_svc, "scott", 5, "tiger", 5, "orcl", 4);

//rc = OCILogon(p_env, p_err, &p_svc, "hr/hr@orcl", 10, NULL, -1, NULL, -1);

if (rc != 0) {

OCIErrorGet((dvoid *)p_err, (ub4) 1, (text *) NULL, &errcode, errbuf, (ub4) sizeof(errbuf), OCI_HTYPE_ERROR);

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

exit(8);

}

else

{

printf("Connect to orcl successful! 已连接！/n");

}

/* Allocate and prepare SQL statement */

rc = OCIHandleAlloc((dvoid *) p_env, (dvoid **) &p_sql,

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

/* set my sql statement */

// strcpy(mysql,"select name from employees where emploee_id=:x");

strcpy(mysql, "select * from employees ");

// strcpy(mysql, "insert into employees values('109', 'x12er', 'na', '1888-06-08')");

//strcpy(mysql,"delete from employees where emploee_id='108'");

// strcpy(mysql,"desc employees;");

rc = OCIStmtPrepare(p_sql, p_err, mysql,

(ub4) strlen(mysql), (ub4) OCI_NTV_SYNTAX, (ub4) OCI_DEFAULT);

/* Bind the values for the bind variables */

// p_bvi = 101; /* Use employee_id=102 */

// rc = OCIBindByName(p_sql, &p_bnd, p_err, (text *) ":x",

// -1, (dvoid *) &p_bvi, sizeof(int), SQLT_INT, (dvoid *) 0,