Hi
I have asp.net programs. I used a very simple data transfer method by using
URLs
¡°First.aspx¡± contents a line to send data to the ¡°second.aspx¡± page, for
example: http://server/path/seond.apsx?data=mydata
There is a customer setting refresh rate in ¡°First.aspx¡± page.
So, if customer set refresh rate to 6 sec (mydata could be different each
time), there are more then 10 different calls (connections) to
¡°second.aspx¡± from the same ¡°first.aspx¡± page in one minute. This gave
me Error 403.9. (too many connections)
Is anyway I can keep the one connetions all the time between the two pages?
thanks 13 1897
Hello Larry:
With connection pooling in .NET you do not need to share the connection
object between web pages (though you can technically store it in the session
object). It might work better if you explicitly closed the connection after
you finished retrieving the data.
You can further read about the connection pooling on MSDN: http://msdn.microsoft.com/library/de...taProvider.asp
HTH,
Phillip Williams http://www.societopia.net http://www.webswapp.com
"Larry" wrote: Hi I have asp.net programs. I used a very simple data transfer method by using URLs ¡°First.aspx ¡Â± contents a line to send data to the ¡°second.aspx ¡± page, for example: http://server/path/seond.apsx?data=mydata There is a customer setting refresh rate in ¡°First.aspx ¡Â± page.
So, if customer set refresh rate to 6 sec (mydata could be different each time), there are more then 10 different calls (connections) to ¡°second.aspx ¡± from the same ¡°first.aspx ¡Â± page in one minute. This gave me Error 403.9. (too many connections) Is anyway I can keep the one connetions all the time between the two pages? thanks
will it be ok if I use the "connection lifetime" in my connection string?
"Server=mypc;Da tabase=mydata;U ser ID=sa;Password= ps;Trusted_Conn ection=True;
Connection Lifetime=5"
disconnect it after 6 sec.
thanks
"Phillip Williams" <Ph************ **@webswapp.com > wrote in message
news:3D******** *************** ***********@mic rosoft.com... Hello Larry:
With connection pooling in .NET you do not need to share the connection object between web pages (though you can technically store it in the
session object). It might work better if you explicitly closed the connection
after you finished retrieving the data.
You can further read about the connection pooling on MSDN: http://msdn.microsoft.com/library/de...us/cpguide/htm
l/cpconConnection PoolingForSQLSe rverNETDataProv ider.asp HTH, Phillip Williams http://www.societopia.net http://www.webswapp.com
"Larry" wrote:
Hi I have asp.net programs. I used a very simple data transfer method by
using URLs ?¡ãFirst.aspx?¡ À contents a line to send data to the ?¡ãsecond.aspx? ¡À
page, for example: http://server/path/seond.apsx?data=mydata There is a customer setting refresh rate in ?¡ãFirst.aspx?¡ À page.
So, if customer set refresh rate to 6 sec (mydata could be different
each time), there are more then 10 different calls (connections) to ?¡ãsecond.aspx? ¡À from the same ?¡ãfirst.aspx?¡ À page in one minute.
This gave me Error 403.9. (too many connections) Is anyway I can keep the one connetions all the time between the two
pages?
thanks
Hello Larry,
You can certainly experiment with the Connection Lifetime values if you find
that it makes a difference. But, are you still getting the "too many
connections" error if you close the connection object directly after the
retrieval of the data is done in every page?
--
Phillip Williams http://www.societopia.net http://www.webswapp.com
"Larry" wrote: will it be ok if I use the "connection lifetime" in my connection string?
"Server=mypc;Da tabase=mydata;U ser ID=sa;Password= ps;Trusted_Conn ection=True; Connection Lifetime=5"
disconnect it after 6 sec. thanks
"Phillip Williams" <Ph************ **@webswapp.com > wrote in message news:3D******** *************** ***********@mic rosoft.com... Hello Larry:
With connection pooling in .NET you do not need to share the connection object between web pages (though you can technically store it in the session object). It might work better if you explicitly closed the connection after you finished retrieving the data.
You can further read about the connection pooling on MSDN: http://msdn.microsoft.com/library/de...us/cpguide/htm l/cpconConnection PoolingForSQLSe rverNETDataProv ider.asp HTH, Phillip Williams http://www.societopia.net http://www.webswapp.com
"Larry" wrote:
Hi I have asp.net programs. I used a very simple data transfer method by using URLs ?¡ãFirst.aspx ?¡À contents a line to send data to the ?¡ãsecond.asp x?¡À page, for example: http://server/path/seond.apsx?data=mydata There is a customer setting refresh rate in ?¡ãFirst.aspx ?¡À page.
So, if customer set refresh rate to 6 sec (mydata could be different each time), there are more then 10 different calls (connections) to ?¡ãsecond.asp x?¡À from the same ?¡ãfirst.aspx ?¡À page in one minute. This gave me Error 403.9. (too many connections) Is anyway I can keep the one connetions all the time between the two pages?
thanks
Trying to keep connections alive between page requests will only
excacerbate your problem. The symptoms you describe lead me to believe
that you're not closing and disposing of your connections properly.
Make sure you explicitly close all connections, and never open and
close them outside a single block of code.
Here is a typical lifecycle for one of your connections:
using (SqlConnection objConn = new SqlConnection(y ourConnectionSt ring))
{
objConn.Open();
// build your command, fill a dataset, or whatever
objConn.Close()
}
If your code is missing the using block or the .Close(), you run the
risk of it staying alive longer that you expect it to. Given your
description of the problem, I'd sat that is probably what's happening.
Good luck!
Jason Kester
Expat Software Consulting Services http://www.expatsoftware.com
I did close the connetions, please check the code.
---------------------
switch ((CommandFuncti ons)Convert.ToI nt32(xmlNode.In nerText))
{
case CommandFunction s.Select:
strSQL = CreateSqlSelect (true);
¡*
if (xdData.Documen tElement == null )
{ ¡*
if (GetConnection( ))
{
IDataReader dbDataReader = null;
try
{
GetCommand(strS QL);
dbDataReader = dbCommand.Execu teReader();
while (dbDataReader.R ead())
{¡* }
}
catch (System.Excepti on e) { ¡* }
finally
{
if ( dbDataReader != null ) dbDataReader.Cl ose();
dbDataReader = null;
CloseConnection ();
}
UpdateCacheList (xnNode.OuterXm l);
}
}
break;
case: ¡*
}
---------------------
"Phillip Williams" <Ph************ **@webswapp.com > wrote in message
news:3E******** *************** ***********@mic rosoft.com... Hello Larry,
You can certainly experiment with the Connection Lifetime values if you
find that it makes a difference. But, are you still getting the "too many connections" error if you close the connection object directly after the retrieval of the data is done in every page? -- Phillip Williams http://www.societopia.net http://www.webswapp.com
"Larry" wrote:
will it be ok if I use the "connection lifetime" in my connection
string? "Server=mypc;Da tabase=mydata;U ser
ID=sa;Password= ps;Trusted_Conn ection=True; Connection Lifetime=5"
disconnect it after 6 sec. thanks
"Phillip Williams" <Ph************ **@webswapp.com > wrote in message news:3D******** *************** ***********@mic rosoft.com... Hello Larry:
With connection pooling in .NET you do not need to share the
connection object between web pages (though you can technically store it in the session object). It might work better if you explicitly closed the connection after you finished retrieving the data.
You can further read about the connection pooling on MSDN: http://msdn.microsoft.com/library/de...us/cpguide/htm l/cpconConnection PoolingForSQLSe rverNETDataProv ider.asp HTH, Phillip Williams http://www.societopia.net http://www.webswapp.com
"Larry" wrote:
> Hi > > > > I have asp.net programs. I used a very simple data transfer method
by using > URLs > > > > ???First.aspx?? ¨¤ contents a line to send data to the
???second.aspx? ?¨¤ page, for > example: http://server/path/seond.apsx?data=mydata > > > > There is a customer setting refresh rate in ???First.aspx?? ¨¤ page. > > So, if customer set refresh rate to 6 sec (mydata could be different each > time), there are more then 10 different calls (connections) to > ???second.aspx? ?¨¤ from the same ???first.aspx?? ¨¤ page in one
minute. This gave > me Error 403.9. (too many connections) > > > > Is anyway I can keep the one connetions all the time between the two pages? > > > > thanks > > >
Well, the code you posted looks ok to me. There is no reason that it would
cause the "too many connections" error.
Look for other possible causes:
1- The other Cases in your Select block: Do any of them do an update using
another connection object?
2- The connectionManag ement element of your machine.config and web.config
(if any) http://msdn.microsoft.com/library/de...entelement.asp
3- The frequency of this page being hit as compared to the time that the
query takes to complete.
That is my best guess.
HTH,
Phillip Williams http://www.societopia.net http://www.webswapp.com
"larry" wrote: I did close the connetions, please check the code.
--------------------- switch ((CommandFuncti ons)Convert.ToI nt32(xmlNode.In nerText)) { case CommandFunction s.Select: strSQL = CreateSqlSelect (true); ¡Â* if (xdData.Documen tElement == null ) { ¡Â* if (GetConnection( )) { IDataReader dbDataReader = null; try { GetCommand(strS QL); dbDataReader = dbCommand.Execu teReader(); while (dbDataReader.R ead()) {¡Â* } } catch (System.Excepti on e) { ¡Â* } finally { if ( dbDataReader != null ) dbDataReader.Cl ose(); dbDataReader = null; CloseConnection (); } UpdateCacheList (xnNode.OuterXm l); } } break; case: ¡Â* } ---------------------
"Phillip Williams" <Ph************ **@webswapp.com > wrote in message news:3E******** *************** ***********@mic rosoft.com... Hello Larry,
You can certainly experiment with the Connection Lifetime values if you find that it makes a difference. But, are you still getting the "too many connections" error if you close the connection object directly after the retrieval of the data is done in every page? -- Phillip Williams http://www.societopia.net http://www.webswapp.com
"Larry" wrote:
will it be ok if I use the "connection lifetime" in my connection string? "Server=mypc;Da tabase=mydata;U ser ID=sa;Password= ps;Trusted_Conn ection=True; Connection Lifetime=5"
disconnect it after 6 sec. thanks
"Phillip Williams" <Ph************ **@webswapp.com > wrote in message news:3D******** *************** ***********@mic rosoft.com... > Hello Larry: > > With connection pooling in .NET you do not need to share the connection > object between web pages (though you can technically store it in the session > object). It might work better if you explicitly closed the connection after > you finished retrieving the data. > > You can further read about the connection pooling on MSDN: > http://msdn.microsoft.com/library/de...us/cpguide/htm l/cpconConnection PoolingForSQLSe rverNETDataProv ider.asp > > HTH, > Phillip Williams > http://www.societopia.net > http://www.webswapp.com > > > "Larry" wrote: > > > Hi > > > > > > > > I have asp.net programs. I used a very simple data transfer method by using > > URLs > > > > > > > > ???First.aspx?? ¨¤ contents a line to send data to the ???second.aspx? ?¨¤ page, for > > example: http://server/path/seond.apsx?data=mydata > > > > > > > > There is a customer setting refresh rate in ???First.aspx?? ¨¤ page. > > > > So, if customer set refresh rate to 6 sec (mydata could be different each > > time), there are more then 10 different calls (connections) to > > ???second.aspx? ?¨¤ from the same ???first.aspx?? ¨¤ page in one minute. This gave > > me Error 403.9. (too many connections) > > > > > > > > Is anyway I can keep the one connetions all the time between the two pages? > > > > > > > > thanks > > > > > >
"Phillip Williams" <Ph************ **@webswapp.com > wrote in message
news:4C******** *************** ***********@mic rosoft.com... Well, the code you posted looks ok to me. There is no reason that it
would cause the "too many connections" error.
Look for other possible causes:
1- The other Cases in your Select block: Do any of them do an update
using another connection object?
Yes, I did use UPDATE here in another case statement.
2- The connectionManag ement element of your machine.config and web.config (if any) http://msdn.microsoft.com/library/de...us/cpgenref/ht
ml/gngrfconnection managementeleme nt.asp
Please tell me what is the Max connection number? my machine.config file has
"<add name = "*" maxconnection = "2" />"
3- The frequency of this page being hit as compared to the time that the query takes to complete.
I think it is very hard to measure. ??
That is my best guess.
HTH, Phillip Williams http://www.societopia.net http://www.webswapp.com
"larry" wrote:
I did close the connetions, please check the code.
--------------------- switch ((CommandFuncti ons)Convert.ToI nt32(xmlNode.In nerText)) { case CommandFunction s.Select: strSQL = CreateSqlSelect (true); ?- if (xdData.Documen tElement == null ) { ?- if (GetConnection( )) { IDataReader dbDataReader = null; try { GetCommand(strS QL); dbDataReader = dbCommand.Execu teReader(); while (dbDataReader.R ead()) {?- } } catch (System.Excepti on e) { ?- } finally { if ( dbDataReader != null ) dbDataReader.Cl ose(); dbDataReader = null; CloseConnection (); } UpdateCacheList (xnNode.OuterXm l); } } break; case: ?- } ---------------------
"Phillip Williams" <Ph************ **@webswapp.com > wrote in message news:3E******** *************** ***********@mic rosoft.com... Hello Larry,
You can certainly experiment with the Connection Lifetime values if
you find that it makes a difference. But, are you still getting the "too many connections" error if you close the connection object directly after
the retrieval of the data is done in every page? -- Phillip Williams http://www.societopia.net http://www.webswapp.com
"Larry" wrote:
> will it be ok if I use the "connection lifetime" in my connection string? > > "Server=mypc;Da tabase=mydata;U ser ID=sa;Password= ps;Trusted_Conn ection=True; > Connection Lifetime=5" > > disconnect it after 6 sec. > thanks > > > "Phillip Williams" <Ph************ **@webswapp.com > wrote in message > news:3D******** *************** ***********@mic rosoft.com... > > Hello Larry: > > > > With connection pooling in .NET you do not need to share the connection > > object between web pages (though you can technically store it in
the > session > > object). It might work better if you explicitly closed the
connection > after > > you finished retrieving the data. > > > > You can further read about the connection pooling on MSDN: > > > http://msdn.microsoft.com/library/de...us/cpguide/htm > l/cpconConnection PoolingForSQLSe rverNETDataProv ider.asp > > > > HTH, > > Phillip Williams > > http://www.societopia.net > > http://www.webswapp.com > > > > > > "Larry" wrote: > > > > > Hi > > > > > > > > > > > > I have asp.net programs. I used a very simple data transfer
method by > using > > > URLs > > > > > > > > > > > > ???First.aspx?? ¡§¡è contents a line to send data to the ???second.aspx? ?¡§¡è > page, for > > > example: http://server/path/seond.apsx?data=mydata > > > > > > > > > > > > There is a customer setting refresh rate in ???First.aspx?? ¡§¡è
page. > > > > > > So, if customer set refresh rate to 6 sec (mydata could be
different > each > > > time), there are more then 10 different calls (connections) to > > > ???second.aspx? ?¡§¡è from the same ???first.aspx?? ¡§¡è page in
one minute. > This gave > > > me Error 403.9. (too many connections) > > > > > > > > > > > > Is anyway I can keep the one connetions all the time between the
two > pages? > > > > > > > > > > > > thanks > > > > > > > > > > > >
"larry" <la***@abc.co m> wrote in news:OsBkAwtpFH A.3960
@TK2MSFTNGP12.p hx.gbl: 3- The frequency of this page being hit as compared to the time that the query takes to complete.
I think it is very hard to measure. ??
Run the query in Query Analyzer to see how long it takes to execute...
--
Lucas Tam (RE********@rog ers.com)
Please delete "REMOVE" from the e-mail address when replying. http://members.ebay.com/aboutme/coolspot18/
Hello Larry,
The maxconnection number is as the name sounds. For example if your
datareader takes 20 seconds to complete and there are 3 requests on this page
during those 20 seconds then you will definitely get an error because you
only have 2 connections available for this web application. This number
should be decided upon for each application together with your database
administrator.
As for measuring the time of your query, I would simply place Response.Write
(System.DateTim e.Now.ToLongTim eString ()) before dbCommand.Execu teReader()
and after you closed the connection.
Note also the difference between the DataReader and using Dataset and
DataAdapter.Fil l method. "While a DataReader is open, the Connection is in
use exclusively by that DataReader. You will not be able to execute any
commands for the Connection, including creating another DataReader, until the
original DataReader is closed." (As quoted from MSDN) whereas the
DAtaAdapter.Fil l method shares the connection with other processes "If the
connection is closed before Fill is called, it is opened to retrieve data,
then closed. If the connection is open before Fill is called, it remains
open." (As quoted from the MSDN)
So in summary, you can try a few things to resolve this:
1- Find out the time that the DataReader keeps the connection open,
2- Increase the maxconnection number (after consulting with you DB admin)
3- Use a DataSet and DataAdapter instead of a datareader
Hope this helps.
Phillip Williams http://www.societopia.net http://www.webswapp.com
"larry" wrote: "Phillip Williams" <Ph************ **@webswapp.com > wrote in message news:4C******** *************** ***********@mic rosoft.com... Well, the code you posted looks ok to me. There is no reason that it would cause the "too many connections" error.
Look for other possible causes:
1- The other Cases in your Select block: Do any of them do an update using another connection object?
Yes, I did use UPDATE here in another case statement.
2- The connectionManag ement element of your machine.config and web.config (if any) http://msdn.microsoft.com/library/de...us/cpgenref/ht ml/gngrfconnection managementeleme nt.asp
Please tell me what is the Max connection number? my machine.config file has "<add name = "*" maxconnection = "2" />"
3- The frequency of this page being hit as compared to the time that the query takes to complete.
I think it is very hard to measure. ??
That is my best guess.
HTH, Phillip Williams http://www.societopia.net http://www.webswapp.com
"larry" wrote:
I did close the connetions, please check the code.
--------------------- switch ((CommandFuncti ons)Convert.ToI nt32(xmlNode.In nerText)) { case CommandFunction s.Select: strSQL = CreateSqlSelect (true); ?- if (xdData.Documen tElement == null ) { ?- if (GetConnection( )) { IDataReader dbDataReader = null; try { GetCommand(strS QL); dbDataReader = dbCommand.Execu teReader(); while (dbDataReader.R ead()) {?- } } catch (System.Excepti on e) { ?- } finally { if ( dbDataReader != null ) dbDataReader.Cl ose(); dbDataReader = null; CloseConnection (); } UpdateCacheList (xnNode.OuterXm l); } } break; case: ?- } ---------------------
"Phillip Williams" <Ph************ **@webswapp.com > wrote in message news:3E******** *************** ***********@mic rosoft.com... > Hello Larry, > > You can certainly experiment with the Connection Lifetime values if you find > that it makes a difference. But, are you still getting the "too many > connections" error if you close the connection object directly after the > retrieval of the data is done in every page? > -- > Phillip Williams > http://www.societopia.net > http://www.webswapp.com > > > "Larry" wrote: > > > will it be ok if I use the "connection lifetime" in my connection string? > > > > "Server=mypc;Da tabase=mydata;U ser ID=sa;Password= ps;Trusted_Conn ection=True; > > Connection Lifetime=5" > > > > disconnect it after 6 sec. > > thanks > > > > > > "Phillip Williams" <Ph************ **@webswapp.com > wrote in message > > news:3D******** *************** ***********@mic rosoft.com... > > > Hello Larry: > > > > > > With connection pooling in .NET you do not need to share the connection > > > object between web pages (though you can technically store it in the > > session > > > object). It might work better if you explicitly closed the connection > > after > > > you finished retrieving the data. > > > > > > You can further read about the connection pooling on MSDN: > > > > > http://msdn.microsoft.com/library/de...us/cpguide/htm > > l/cpconConnection PoolingForSQLSe rverNETDataProv ider.asp > > > > > > HTH, > > > Phillip Williams > > > http://www.societopia.net > > > http://www.webswapp.com > > > > > > > > > "Larry" wrote: > > > > > > > Hi > > > > > > > > > > > > > > > > I have asp.net programs. I used a very simple data transfer method by > > using > > > > URLs > > > > > > > > > > > > > > > > ???First.aspx?? ¡§¡è contents a line to send data to the ???second.aspx? ?¡§¡è > > page, for > > > > example: http://server/path/seond.apsx?data=mydata > > > > > > > > > > > > > > > > There is a customer setting refresh rate in ???First.aspx?? ¡§¡è page. > > > > > > > > So, if customer set refresh rate to 6 sec (mydata could be different > > each > > > > time), there are more then 10 different calls (connections) to > > > > ???second.aspx? ?¡§¡è from the same ???first.aspx?? ¡§¡è page in one minute. > > This gave > > > > me Error 403.9. (too many connections) > > > > > > > > > > > > > > > > Is anyway I can keep the one connetions all the time between the two > > pages? > > > > > > > > > > > > > > > > thanks > > > > > > > > > > > > > > > > > > This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics |
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