ID: 19916
Comment by: [EMAIL PROTECTED]
Reported By: [EMAIL PROTECTED]
Status: Open
Bug Type: MSSQL related
Operating System: WIN2K prof. SP2
PHP Version: 4.2.1
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------------------------------------------------------------------------
[2002-10-15 08:39:49] [EMAIL PROTECTED]
Platform information:
Windows 2000 prof. SP2
IIS 5
MSSQL 7.0 and 2000
PHP 4.1.2 but I assume same behaviour with 4.2.1
according bug report #18271.
Hi,
I have experienced a very strange behaviour querying data from tables
in MS SQLServer 7.0 and 2000. Sometimes in a reproducable but
statistically way PHP hangs after querying data until IIS throws a
timeout similar to bug report #18271.
I have found that this occurs on our system only on tables having
columns with float datatypes of different lengths. After altering all
columns with real datatypes (4 Bytes) to float (e.g. double precision,
8 Bytes) everything seems to work fine. This bug didn't appear on
tables with solely real datatypes alongside with timestamp and varchar
etc datatypes or float datatypes accompanied by other char datatypes.
For completeness I list a part of my script for connecting to the
database and doing the query (but there is nothing special with the
script):
... some code on top ...
$mpid = $_GET["mpid"];
$hostname = "sql01";
$database = "fis_gp";
$username = "****";
$password = "****";
$con=mssql_connect($hostname,$username,$password) or die("Verbindung zu
$hostname konnte nicht hergestellt werden");
mssql_select_db($database, $con) or die("Datenbank $database nicht
erreichbar");
$querystr="select M.CODE, " // varchar 40
. " M.BEZEICHNUNG, " // varchar 80
. " M.GEOGR_LAENGE as LAENGE, " // float 8
. " M.GEOGR_BREITE as BREITE, " // float 8
. " M.HOEHE_NN, " // float 8
. " M.TK25, " // int 4
. " M.IN_DATENBANK as IN_DB, " // bit
. " M.DATUM_VON as VON, " // datetime 8
. " M.DATUM_BIS as BIS, " // datetime 8
. " P.ABSOLUTSCHWERE_71 as ABSS, " // float 8
. " P.BOUGUERSCHWERE as BOUS, " // real 4
. " P.DICHTE_BOUGUERSCHWERE as DICHTE, " // real 4
. " K.BEZEICHNUNG as KAMPAGNE, " // varchar 80
. " I.BEZEICHNUNG as INSTITUTION, " // varchar 80
. " A.EINH_NAME " // varchar 50
. "from ((((GR_Z_MESSPUNKT P "
. " inner join MESSUNG M on M.ID=P.MESSUNG_ID)
"
. " inner join ADM_EINHEIT A on A.ID=M.GEBIET_ID)
"
. " inner join KAMPAGNE K on K.ID=M.KAMPAGNE_ID)
"
. " inner join INSTITUTION I on I.ID=K.INSTITUTION_ID)
"
. "where M.ID = $mpid";
$result=mssql_query($querystr, $con);
$thisrow=mssql_fetch_array($result);
...etc...
Hope this helps to track this bug reported several times.
Andreas Maul
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