Недавно я обнаружил, что SQL-запрос, который работал раньше, теперь отключается через 60 секунд и выдает ошибку. Запрос выполняется медленно, но выполняется как часть ночной работы, поэтому сама проблема не возникает (поэтому, пожалуйста, не предлагайте мне ее оптимизировать).
Я могу последовательно воспроизвести ошибку, выполнив "select SLEEP (120)"; от PHP, как показано ниже. Однако выполнение одного и того же оператора из клиента MySQL выполняется успешно (возвращает 0). Я попытался настроить wait_timeout (установлен на 28800), но не повезло. Я также перезагрузил сервер db и машину.
Тот факт, что он всегда истекает ровно через 60 секунд, подсказывает мне, что это скорее всего будет установка, а не проблема с ограниченными ресурсами.
Я бегу:
Windows Server 2003
MySql 5.1.36-сообщество
PHP 5.3
Ниже приведен мой тестовый код, вывод и результаты из SHOW VARIABLES
Спасибо!
CODE:
set_error_handler("sqlErrorHandler");
set_time_limit(12000);
$link = mysql_connect("$MYSQL_Host","$MYSQL_User","$MYSQL_Pass");
mysql_select_db($MYSQL_db, $link);
echo "mysql_ping = " . (mysql_ping($link) ? "LIVE" : "DEAD") . "<br /><br />";
$sql = "SELECT SLEEP(120);";
$start = microtime(true);
mysql_query($sql, $link);
echo "**query done**<br />";
allDone();
function allDone(){
global $start, $sql;
$end = microtime(true);
echo "sql : $sql<br />";
echo "elapsed : " . ($end - $start) . "<br />";
echo "<br />";
}
function sqlErrorHandler($errno, $errstr, $errfile, $errline){
global $link;
echo "Error : $errno<br />$errstr<br />";
echo "mysql_ping : " . (mysql_ping($link) ? "LIVE" : "DEAD") . "<br />";
echo "<br />";
allDone();
}
OUTPUT:
mysql_ping = LIVE
Error : 2
mysql_query() [function.mysql-query]: MySQL server has gone away
mysql_ping : DEAD
sql : SELECT SLEEP(120);
elapsed : 60.051116943359
Error : 2
mysql_query() [function.mysql-query]: Error reading result set header
mysql_ping : DEAD
sql : SELECT SLEEP(120);
elapsed : 60.0511469841
**query done**
sql : SELECT SLEEP(120);
elapsed : 60.051155090332
ПОКАЖИТЕ ПЕРЕМЕННЫЕ:
Variable_name=Value
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auto_increment_offset=1
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character_sets_dir=C:\\Program Files\\MySQL\\MySQL Server 5.1\\share\\charsets\\
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collation_server=latin1_swedish_ci
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datadir=C:\\Documents and Settings\\All Users\\Application Data\\MySQL\\MySQL Server 5.1\\Data\\
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init_file=
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version=5.1.36-community
version_comment=MySQL Community Server (GPL)
version_compile_machine=ia32
version_compile_os=Win32
wait_timeout=28800
warning_count=0