Oracle如何直接运行OS命令(下)第1/2页
Oracle如何直接运行OS命令(下)第1/2页
发布时间:2016-12-28 来源:查字典编辑
摘要:正在看的ORACLE教程是:Oracle如何直接运行OS命令(下)。EXECSQLWHENEVERSQLERRORCONTINUE;sqlg...

正在看的ORACLE教程是:Oracle如何直接运行OS命令(下)。EXEC SQL WHENEVER SQLERROR CONTINUE;

sqlglm(msg_buffer, &buffer_size, &msg_length);

printf("Daemon error while connecting:n");

printf("%.*sn", msg_length, msg_buffer);

printf("Daemon quitting.n");

exit(1);

}

void

sql_error()

{

char msg_buffer[512];

int msg_length;

int buffer_size = 512;

EXEC SQL WHENEVER SQLERROR CONTINUE;

sqlglm(msg_buffer, &buffer_size, &msg_length);

printf("Daemon error while executing:n");

printf("%.*sn", msg_length, msg_buffer);

printf("Daemon continuing.n");

}

main()

{

EXEC SQL WHENEVER SQLERROR DO connect_error();

EXEC SQL CONNECT :uid;

printf("Daemon connected.n");

EXEC SQL WHENEVER SQLERROR DO sql_error();

printf("Daemon waiting...n");

while (1) {

EXEC SQL EXECUTE

BEGIN

/*接收deamon发来的字符*/

:status := DBMS_PIPE.RECEIVE_MESSAGE('daemon');

IF :status = 0 THEN

/*取出字符*/

DBMS_PIPE.UNPACK_MESSAGE(:command);

END IF;

END;

END-EXEC;

IF (status == 0)

{

command.arr[command.len] = '';

/*如果是stop,该进程就退出*/

IF (!strcmp((char *) command.arr, "STOP"))

{

printf("Daemon exiting.n");

break;

}

ELSE IF (!strcmp((char *) command.arr, "SYSTEM"))

{

EXEC SQL EXECUTE

BEGIN

DBMS_PIPE.UNPACK_MESSAGE(:return_name);

DBMS_PIPE.UNPACK_MESSAGE(:value);

END;

END-EXEC;

value.arr[value.len] = '';

printf("Will execute system command '%s'n", value.arr);

/*运行os命令*/

status = system(value.arr);

EXEC SQL EXECUTE

BEGIN

DBMS_PIPE.PACK_MESSAGE('done');

DBMS_PIPE.PACK_MESSAGE(:status);

:status := DBMS_PIPE.SEND_MESSAGE(:return_name);

END;

END-EXEC;

当前1/2页12下一页阅读全文

推荐文章
猜你喜欢
附近的人在看
推荐阅读
拓展阅读
相关阅读
网友关注
最新Oracle教程学习
热门Oracle教程学习
编程开发子分类