END IF;
END;
END-EXEC;
IF (status == 0)
{
command.arr[command.len] = ''\0'';
/*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] = ''\0'';
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;
IF (status)
{
printf
("Daemon error while responding to system command.");
printf(" status: %d\n", status);
}
}
ELSE
{
printf
("Daemon error: invalid command ''%s'' received.\n",
command.arr);
}
}
ELSE
{
printf("Daemon error while waiting for signal.");
printf(" status = %d\n", status);
}
}
EXEC SQL COMMIT WORK RELEASE;
exit(0);
}
以上代码起名为daemon.pc,用proc预编译:
proc iname=daemon.pc userid=用户名/密码@服务名 sqlcheck=semantics
得到daemon.c,在用c进行编译,注意在NT上要把orasql8.lib加上,否则编译通过,连接没法通过.
3、在服务器上运行daemon.exe
4、在sqlplus运行测试语句:
SQL> variable rv number
SQL> execute :rv := DAEMON.EXECUTE_SYSTEM(''ls -la'');
PL/SQL 过程已成功完成。
SQL> execute :rv := DAEMON.EXECUTE_SYSTEM(''dir'');
PL/SQL 过程已成功完成。
SQL>
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