#43561 [NEW]: Selecting large numbers of rows results in OOM
From: php at seven dot net dot nz
Operating system: Linux
PHP version: 5.2.5
PHP Bug Type: PDO related
Bug description: Selecting large numbers of rows results in OOM
Description:
------------
Selecting a large number of rows in a prepared statement results in an OOM
error after execute() is called.
The SQL server is located on a different box. I have not been able to
pinpoint the exact number of rows as it is a moving target. It has failed
on as low as 20k and as high as 50k.
Obviously it would result in OOM if I had selected everything into an
array, but from what I gather results should not be being sent to PHP until
the fetchXYZ functions are called. Or am I wrong?
It worked with 5.2.0 on the same box.
Reproduce code:
---------------
<?php
$database = new PDO (
'dblib:host=10.9.8.213;dbname=realenz',
'sa',
'loo0nieP'
);
$query = "SELECT TOP 50000 * FROM nc_listing_full";
$statement = $database->prepare ($query);
$statement->execute ();
?>
Expected result:
----------------
Query to execute
Actual result:
--------------
Fatal error: Allowed memory size of 134217728 bytes exhausted (tried to
allocate 4 bytes) in
/www/data/realestate-dev/scripts/htdocs/cron/rebuild_listings.php on line
12
--
Edit bug report at http://bugs.php.net/?id=43561&edit=1
--
Try a CVS snapshot (PHP 4.4): http://bugs.php.net/fix.php?id=43561&r=trysnapshot44
Try a CVS snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=43561&r=trysnapshot52
Try a CVS snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=43561&r=trysnapshot53
Try a CVS snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=43561&r=trysnapshot60
Fixed in CVS: http://bugs.php.net/fix.php?id=43561&r=fixedcvs
Fixed in release: http://bugs.php.net/fix.php?id=43561&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=43561&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=43561&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=43561&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=43561&r=support
Expected behavior: http://bugs.php.net/fix.php?id=43561&r=notwrong
Not enough info: http://bugs.php.net/fix.php?id=43561&r=notenoughinfo
Submitted twice: http://bugs.php.net/fix.php?id=43561&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=43561&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=43561&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=43561&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=43561&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=43561&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=43561&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=43561&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=43561&r=mysqlcfg
Thread (3 messages)
- php at seven dot net dot nz