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PHP连mysql和oracle数据库性能比较

Jun 13, 2016 am 11:22 AM
mysql oracle php use and performance database Compare of Simple surface

使用一个很简单的表,mysql和oracle使用的表结构是一样的,都只有三个字段,结构如下:
mysql的表结构:
CREATE TABLE board (
   board_id smallint(6) NOT NULL auto_increment,
   board_name char(16) NOT NULL,
   board_manager char(20),
   PRIMARY KEY (board_id)
);
oracle的结构:
CREATE TABLE PHP_ORACLE."BOARD"
       ("BOARD_ID" FLOAT,
       "BOARD_NAME" CHAR(16) NOT NULL,
       "BOARD_MANAGER" CHAR(20)) ;

我们只测试了INSERT操作花的时间,对于select,并未作测试。
因为win32下只有PHP3才能连接oracle数据库,所以只测试了用PHP3连接oracle的性能。相
信在PHP4的正式版本出来后,用PHP4连接oracle的速度应该有所提升。
而在LINUX下,因为我没有装oracle,所以只测试了mysql的性能。据说在LINUX下,oracle
的性能不错,只是无法测试。
并且我们将所有的用于数据库连接和oracle用来分析sql语句的代码都放在了统计代码之外
,所以测试得出的时间只是用于执行SQL操作所花费的时间。

用来测试mysql的程序:

$dblink=mysql_connect("localhost","root","shh123");
mysql_select_db("bbs");
$counter=1;
set_time_limit(300);
$query="insert into board (board_name,board_manager) values (test,test)";
$begin_time=time();
for ($i=1;$i        mysql_db_query("bbs",$query);
    $counter++;
}
$end_time=time();
mysql_close($dblink);
echo "test db speed...
";
echo "begin time:".$begin_time."
";
echo "
end time:".$end_time."
";
$total=$end_time-$begin_time;
echo "total spent time:".$total;
?>

用来测试oracle的程序:

$handle=OCILogon("php_oracle","php_oracle");

$counter=1;
set_time_limit(300);
$query="insert into board (board_id,board_name,board_manager) values (:board_id,test,test)";
$state=OCIParse($handle, $query);
OCIBindByName($state, ":board_id", &$i,32);
$begin_time=time();
for ($i=1;$i        ociexecute($state);
}
$end_time=time();
OCIFreeStatement($state);
ocilogoff($handle);
echo "test db speed...
";
echo "begin time:".$begin_time."
";
echo "
end time:".$end_time."
";
$total=$end_time-$begin_time;
echo "total spent time:".$total;
?>

测试结果:

环境:win32+apache+php4+mysql
结果:28秒

环境:win32+apache+php3+mysql
结果:34秒

环境:win32+apache+php3+oracle8.0.5(oci函数)
结果:46秒

环境:linux+apache+php4+mysql
结果:10秒

结论:
在WIN32下,mysql的性能虽然不是很好,但和oracle8比起来,还是要快很多,尤其是我在
测试程序中,并没有将数据库连接的语句包括进来,所以这个测试结果只是插入数据所花费
的时间,而oracle的连接,天,太慢了!在我的机器上,连接一次,至少1-2秒钟。
而在LINUX下,mysql的性能相对于在WIN32下,又有了一个很大的飞跃。由28秒骤减到10秒。
所以,如果你不需要存储过程的支持,并且数据库量不是大的那么惊人的话,还是在LINUX
下使用mysql作为你的数据库吧!这个轻量级的数据库可以给你最佳的性能、可管理性和相
当不错的安全性。


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