Edit report at https://bugs.php.net/bug.php?id=24522&edit=1
ID: 24522
Comment by: cjrogala at gmail dot com
Reported by: cdcr440 at hotmail dot com
Summary: MSSQL: "Changed database context to" error when
running query
Status: Bogus
Type: Bug
Package: MSSQL related
Operating System: WinNT
PHP Version: 4.3.1
Block user comment: N
Private report: N
New Comment:
I am an idiot. Please disregard my post.
Previous Comments:
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[2011-07-10 18:34:22] cjrogala at gmail dot com
You may want to reopen this issue. I am inserting data into MS SQL Server
2008r2 and using PHP 5.2; and the same error occurs. The positive is that the
error did not prevent the data from being inserted into the database, but it
did display the same error message. I did not attempt to change the timeout
since this is a much later version. I also noticed this issue in a few
different location on the web. I am logging into the database as the sa and
like I said, the data is making into the database; but the error still appears
when validating the result of the query. Unlike the previous post, I will not
provide a credentials, but I know it's not a connection error since the data is
getting into the database. Here is my code:
$tsql = "USE littleliam
INSERT INTO [littleliam].[dbo].[tbl_blogPosts]
([postText]
,[created]
,[createdBy]
,[approved])
VALUES ('" .$postText ."', GETDATE(), " .$author .", " .$approvalStatus
.")";
//Used to validate the query by running it in SQL Server Management studios
echo $tsql;
//Prepare and execute the statement.
mssql_select_db('littleliam');
$insertReview = mssql_query($tsql, $msServerLink);
if (!$res) {
print("SQL statement failed with error:\n");
print(" ".mssql_get_last_message()."\n");
} else {
print("One data row inserted.\n");
}
mssql_close($msServerLink);
My connection script is:
$msServerLink = mssql_connect($db_server, $db_user, $db_pass);
The only thing I could think of is selecting the database in the connect
function. Can a database be selected in the mssql_connect function?
------------------------------------------------------------------------
[2003-07-13 10:48:25] sni...@php.net
Temporarily closing. :)
------------------------------------------------------------------------
[2003-07-10 04:03:09] cdcr440 at hotmail dot com
Thank you very much for that. Unfortunately, I can't check that this fixes the
problem because it's gone today and I didn't manage to find a query that fails.
As I said it's unpredictable and appears/disappears regularly. I've increased
the timeout and I'll see if the problem comes back again.
Sorry to have wasted your time, I think you can temporarily close this bug
report.
------------------------------------------------------------------------
[2003-07-09 17:19:58] f...@php.net
This sounds like a timeout porblem.
You can use two php.ini settings to control the timeouts.
mssql.connect_timeout = 5
mssql.timeout = 60
These are default values in seconds. try to increase the second timeout value.
(I'll make sure thes values makes it into the distributed versions of php.ini).
------------------------------------------------------------------------
[2003-07-09 07:52:15] cdcr440 at hotmail dot com
Thanks for looking into this.
The access rights should be sufficient because I tried several users including
the sa user and the problem occured for all.
The database name doesn't include white spaces.
mssql.min_message_severity = 10 in my php.ini as I had attached but still see
the message you say I should only see with mssql.min_message_severity = 0,
maybe that's related to the problem. Could it be the result of the MSSQL module
getting confused?
Even though "Changed database context to 'XXX'" isn't an error message, it
appears when the query I try to run fails and the subsequent database
selections fail with the same error.
Here is the shortest example that produces the error, sorry for the biggish
query, this one is one that I know generates an error. It connects with the sa
user that can access everything without restrictions:
<?
$config["sqlserver"]="192.168.101.3";
$config["sqluser"]="sa";
$config["sqlpassword"]="x";
$config["sqldatabase"]="XXX";
$theQuery="select top 15 ni.* from NewsItem as ni, NewsItemStatus as nis,
NewsStatus as ns
where nis.NewsItemID=ni.ID
and ns.ID=nis.NewsStatusID
and lower(ns.Status) = lower('live')
and (ni.ID in (select ni1.ID from NewsItem ni1 JOIN NewsItemNewsTagTable as
nintt1 ON nintt1.NewsItemID=ni1.ID where ni1.[Date] >= '09-Jun-2003' and
nintt1.[Date] >= '09-Jun-2003' and ni1.[Date] <= '09-Jul-2003' and
nintt1.[Date] <= '09-Jul-2003' and ( (lower(cast (Text as varchar(8000)))
like '%chuan%' )or (lower(cast (BassoeComment as varchar(8000))) like
'%chuan%' )or (lower(cast (FirstParagraph as varchar(8000))) like '%chuan%'
)or (lower(cast (Title as varchar(8000))) like '%chuan%' )or (lower(cast
(nintt1.TagsCache as varchar(8000))) like '%chuan%' ))) and ni.ID in (select
ni1.ID from NewsItem ni1 JOIN NewsItemNewsTagTable as nintt1 ON
nintt1.NewsItemID=ni1.ID where ni1.[Date] >= '09-Jun-2003' and nintt1.[Date]
>= '09-Jun-2003' and ni1.[Date] <= '09-Jul-2003' and nintt1.[Date] <=
'09-Jul-2003' and ( (lower(cast (Text as varchar(8000))) like '%hup%' )or
(lower(cast (BassoeComment as varchar(8000))) like '%hup%' )or (lower(cast
(FirstParagraph as varchar(8000))) like '%hup%' )or (lower(cast (Title as
varchar(8000))) like '%hup%' )or (lower(cast (nintt1.TagsCache as
varchar(8000))) like '%hup%' )))) and ( ni.NewsTypeID=4 ) and ni.[Date] >=
'09-Jun-2003' and ni.[Date] <= '09-Jul-2003' order by ni.[Date] desc,
ni.[Timestamp] desc ";
print("Connecting to DB server... ");
$dbID = MSSQL_CONNECT($config["sqlserver"], $config["sqluser"],
$config["sqlpassword"]);
if (!$dbID) {
print("Error connecting to DB server.<br>\n");
} else {
print("done.<br>\n");
}
print("Selecting database... ");
if (!mssql_select_db($config["sqldatabase"], $dbID)) {
print("Error selecting database.<br>\n");
} else {
print("done.<br>\n");
}
print("Running query... ");
$theResults = mssql_query($theQuery, $dbID);
if (!$theResults) {
print("Unable to run query:\n");
print(mssql_get_last_message()."<br>\n");
} else {
print("done.<br>\n");
}
?>
The output is as follows:
Connecting to DB server... done.
Selecting database... done.
Running query... Unable to run query: Changed database context to 'XXX'.
However, the query runs fine query analyzer with the same user (sa!), although
slowly, so we can rule out a purely SQL problem.
However, if the query is reduced a bit, it doesn't fail:
select top 15 ni.* from NewsItem as ni, NewsItemStatus as nis, NewsStatus
as ns
where nis.NewsItemID=ni.ID
and ns.ID=nis.NewsStatusID
and lower(ns.Status) = lower('live')
and (ni.ID in (select ni1.ID from NewsItem ni1 JOIN NewsItemNewsTagTable as
nintt1 ON nintt1.NewsItemID=ni1.ID where ni1.[Date] >= '09-Jun-2003' and
nintt1.[Date] >= '09-Jun-2003' and ni1.[Date] <= '09-Jul-2003' and
nintt1.[Date] <= '09-Jul-2003' and ( (lower(cast (Text as varchar(8000)))
like '%chuan%' )or (lower(cast (BassoeComment as varchar(8000))) like
'%chuan%' )or (lower(cast (FirstParagraph as varchar(8000))) like '%chuan%'
)or (lower(cast (Title as varchar(8000))) like '%chuan%' )or (lower(cast
(nintt1.TagsCache as varchar(8000))) like '%chuan%' )))) and ( ni.NewsTypeID=4
) and ni.[Date] >= '09-Jun-2003' and ni.[Date] <= '09-Jul-2003' order by
ni.[Date] desc, ni.[Timestamp] desc
So although it looks like a query problem, I remind you that both queries run
fine through both query analyzer and the enterprise manager. Could it be a kind
of time out problem since the second query (that succeeds) runs faster? I don't
see timeout settings in the MSSQL configuration in php.ini. The script itself
doesn't timeout and continues executing after the error.
The log I attached the other day was also showing that subsequent attempts to
select the database to run another query would fail.
Does this help?
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