Re: Session Variables dropping?
Nick Baker wrote: A session variable holds through 2 pages then is not recognized on the 3rd page. Going back to the other pages and refreshing that page shows the session variable to be valid. Any ideas? Thanks, Nick More specifics 1. Execute the following query cfquery name=Session.SrchResults datasource=BusDB Maxrows=160 dbtype=ODBC This same query will be used on each of the following pages, only displaying different variables based on users selection. Below is the query. cfoutput query=#Session.SrchResults# startrow=#Session.CurrentRow# maxrows=1 On the 3rd page it throws the following error. Element SRCHRESULTS is undefined in SESSION That's potentially an awful lot of data to be storing in the session. It could be that CF is saying Bugger me! There's a lot of stuff here. I'm dumping it. In other words, try using query caching instead. It'll give you the effect you're looking for without screwing the pooch with the session scope. -- Keith Gaughan -- talideon.com The man who removes a mountain begins by carrying away small stones... ...to make place for some really big nukes! [Todays Threads] [This Message] [Subscription] [Fast Unsubscribe] [User Settings] [Donations and Support]
RE: Session Variables dropping?
I have systems running storing more than 100k records in the application scope with no problem at all. I guess there still has to be a tiny itchy annoying bug waiting for you to be resolved :-) I have never seen problems like yours before. Micha Schopman Software Engineer Modern Media, Databankweg 12 M, 3821 ALAmersfoort Tel 033-4535377, Fax 033-4535388 KvK Amersfoort 39081679, Rabo 39.48.05.380 [Todays Threads] [This Message] [Subscription] [Fast Unsubscribe] [User Settings] [Donations and Support]
Re: Session Variables dropping?
100k in the Application scope. WOW. When it comes to this sort of thing im always way to reserved. Usually shying awaying from hold any huge amount of data in a persistance scope. What type of system you running this on: intranet, internet etc?? You got many other application on the same server? Andy www.andyjarrett.co.uk On Thu, 14 Oct 2004 16:08:17 +0200, Micha Schopman [EMAIL PROTECTED] wrote: I have systems running storing more than 100k records in the application scope with no problem at all. I guess there still has to be a tiny itchy annoying bug waiting for you to be resolved :-) I have never seen problems like yours before. Micha Schopman Software Engineer Modern Media, Databankweg 12 M, 3821 ALAmersfoort Tel 033-4535377, Fax 033-4535388 KvK Amersfoort 39081679, Rabo 39.48.05.380 [Todays Threads] [This Message] [Subscription] [Fast Unsubscribe] [User Settings] [Donations and Support]
RE: Session Variables dropping?
The system runs 80 websites on a single instance of an inhouse developed ColdFusion CMS. In my case the data which is stored has been filtered before it is stored into the application scope, so don't think I store 10+ columns in the application query struct ;) Micha Schopman Software Engineer Modern Media, Databankweg 12 M, 3821 ALAmersfoort Tel 033-4535377, Fax 033-4535388 KvK Amersfoort 39081679, Rabo 39.48.05.380 [Todays Threads] [This Message] [Subscription] [Fast Unsubscribe] [User Settings] [Donations and Support]
Session Variables dropping?
A session variable holds through 2 pages then is not recognized on the 3rd page. Going back to the other pages and refreshing that page shows the session variable to be valid. Any ideas? Thanks, Nick More specifics 1. Execute the following query cfquery name=Session.SrchResults datasource=BusDB Maxrows=160 dbtype=ODBC This same query will be used on each of the following pages, only displaying different variables based on users selection. Below is the query. cfoutput query=#Session.SrchResults# startrow=#Session.CurrentRow# maxrows=1 On the 3rd page it throws the following error. Element SRCHRESULTS is undefined in SESSION [Todays Threads] [This Message] [Subscription] [Fast Unsubscribe] [User Settings] [Donations and Support]
Re: Session Variables dropping?
On Wed, 13 Oct 2004 14:34:57 -0500, Nick Baker wrote: cfoutput query=#Session.SrchResults# startrow=#Session.CurrentRow# maxrows=1 On the 3rd page it throws the following error. Element SRCHRESULTS is undefined in SESSION Check to make sure that you're reference the columns in the query results correctly. I seem to recall that sometimes when you get Element XXX is undefined inSESSION there's a sub-section in XXX that's not defined. i.e., if XXX is a structure, you may be referring to a key which doesn't exist in that structure.In this case, you may be misspelling one of the columns in your query results. Try doing a dump of the session state and see if srchresults is there. I suspect that it is. Scott -- - Scott Brady http://www.scottbrady.net/ [Todays Threads] [This Message] [Subscription] [Fast Unsubscribe] [User Settings] [Donations and Support]
Session Variables Dropping
Hi, Why could session variables be dropping intermetently on my app. The variables are properly locked. On each page I localize the variables by moving them to a local scope. Once in a while, this local variables which should always be there are not found. I am using CF5 Pro on a Win2000 Server. Thanks Sam ~| Archives: http://www.houseoffusion.com/cf_lists/index.cfm?forumid=4 Subscription: http://www.houseoffusion.com/cf_lists/index.cfm?method=subscribeforumid=4 FAQ: http://www.thenetprofits.co.uk/coldfusion/faq Get the mailserver that powers this list at http://www.coolfusion.com Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=89.70.4
Session Variables Dropping
Hi, Why could session variables be dropping intermetently on my app. The variables are properly locked. On each page I localize the variables by moving them to a local scope. Once in a while, this local variables which should always be there are not found. I am using CF5 Pro on a Win2000 Server. Thanks Sam ~| Archives: http://www.houseoffusion.com/cf_lists/index.cfm?forumid=4 Subscription: http://www.houseoffusion.com/cf_lists/index.cfm?method=subscribeforumid=4 FAQ: http://www.thenetprofits.co.uk/coldfusion/faq This list and all House of Fusion resources hosted by CFHosting.com. The place for dependable ColdFusion Hosting. http://www.cfhosting.com Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=89.70.4
RE: Session Variables Dropping
Do you mean one session variable among many, or all session variables, for a given user? When all the user's session variables disappear, it's often simply because the session key (CFID and CFTOKEN) for the user is changing. These are usually managed (passed from request to request) by way of cookies. This sudden disappearance usually is caused by something causing those cookies to be lost, so that CF creates new values for them and the link to the old session variable values is lost. Could this be a situation where the user experiencing the loss is not using cookies? Are you coding to anticipate that? Might they have cleared their cookie cache? Or be using a filtering or other program that might be blocking or eating/deleting their cookies? Might they be behind a proxy that's either blocking or hiding them? Or causing the same values to be shared by many users? Could they have logged off one user on their machine and logged on with another, which would cause them to have new cookies? Or might they have moved from one computer to another during their session thus losing their cookies? Here's a simple test: since you're using CF 5, you have access to the new CFLOG tag. Write out a log entry (to a file of your choosing) the values of the user's CFID and CFTOKEN, and some identifying characteristic for the user, to see if the values of CFID/CFTOKEN are changing for them when the sessions appear to be lost. If you have then log in, write out their username with the values. Assuming you had a session.username value, you could try: cflog text=#session.username# #session.URLtoken# #cgi.remote_addr# file=CatchSessErrors type=Information thread=yes date=yes time=yes application=yes This will only work as offered if you have a variable called session.username. If not, remove that reference in the TEXT attribute. It will write an entry to a file called CatchSessErrors.log in the log directory where CF is installed: in CF 5, that is. In CFMX, the directory's called logs (as in cfusionmx\logs), and in BlueDragon, it's in the BlueDragon Server's work\cflog directory. It's writing out session.URLToken, which is a reserved variable in CFML for the session key (the CFID/CFTOKEN pair in CF 5). If you're not having them log in to give you any unique username, you could try their IP Address (cgi.http_host), which is offered in that example as well. The only risk there is that if they're using a Proxy, you may see the same values of IP address for the given CFID/CFTOKEN even if it's multiple users. As a last resort, you could write out (or create a hash of) their cgi.remote_user, cgi.http_user_agent, and cgi.http_accept, to try to distinguish users reported as having the same IP address. Anyway, the whole point of the exercise is to see if the same user (best indicated by some login username or their IP address) is getting different session tokens (CFID/CFTOKEN, as represented in session.URLToken). If they are, then there's something wrong on their end, not likely with your code at all. If you don't have access to the log files, you could write out to a separate file in the application directory with CFFILE. And if that's restricted, just drop back to using CFOUTPUT to write the values to the screen for the user to report to you. They and you will now have to track them over time to detect when the problem arises, but it's a solution. If you don't want that ugliness appearing on screen, you could have it done only in a special template that they call (the session variable issues should apply to all templates in a given directory), or you could write them to the screen in a way that's hidden unless they highlight it (such as using font color=white if outputting on a white screen, or using stylesheets). Hope any of these tips may help. Sounds like fodder for me to come up with a new article! :-) I'll look forward to hearing what others have to say on the subject. /charlie -Original Message- From: Sam Komolafe [mailto:[EMAIL PROTECTED] Sent: Friday, June 06, 2003 5:40 PM To: CF-Talk Subject: Session Variables Dropping Hi, Why could session variables be dropping intermetently on my app. The variables are properly locked. On each page I localize the variables by moving them to a local scope. Once in a while, this local variables which should always be there are not found. I am using CF5 Pro on a Win2000 Server. Thanks Sam ~| Archives: http://www.houseoffusion.com/cf_lists/index.cfm?forumid=4 Subscription: http://www.houseoffusion.com/cf_lists/index.cfm?method=subscribeforumid=4 FAQ: http://www.thenetprofits.co.uk/coldfusion/faq Your ad could be here. Monies from ads go to support these lists and provide more resources for the community. http://www.fusionauthority.com/ads.cfm Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=89.70.4
RE: Session Variables Dropping
Of course, I meant to write If you have *them* login, write out their username with the values rather than If you have *then* login. And lest anyone feel cheeky about my saying CFLOG was new, I meant that with respect to someone (like Sam) working on CF5, which is the release in which it was introduced. /charlie -Original Message- From: Charlie Arehart [mailto:[EMAIL PROTECTED] Sent: Friday, June 06, 2003 6:26 PM To: CF-Talk Subject: RE: Session Variables Dropping Do you mean one session variable among many, or all session variables, for a given user? When all the user's session variables disappear, it's often simply because the session key (CFID and CFTOKEN) for the user is changing. These are usually managed (passed from request to request) by way of cookies. This sudden disappearance usually is caused by something causing those cookies to be lost, so that CF creates new values for them and the link to the old session variable values is lost. Could this be a situation where the user experiencing the loss is not using cookies? Are you coding to anticipate that? Might they have cleared their cookie cache? Or be using a filtering or other program that might be blocking or eating/deleting their cookies? Might they be behind a proxy that's either blocking or hiding them? Or causing the same values to be shared by many users? Could they have logged off one user on their machine and logged on with another, which would cause them to have new cookies? Or might they have moved from one computer to another during their session thus losing their cookies? Here's a simple test: since you're using CF 5, you have access to the new CFLOG tag. Write out a log entry (to a file of your choosing) the values of the user's CFID and CFTOKEN, and some identifying characteristic for the user, to see if the values of CFID/CFTOKEN are changing for them when the sessions appear to be lost. If you have then log in, write out their username with the values. Assuming you had a session.username value, you could try: cflog text=#session.username# #session.URLtoken# #cgi.remote_addr# file=CatchSessErrors type=Information thread=yes date=yes time=yes application=yes This will only work as offered if you have a variable called session.username. If not, remove that reference in the TEXT attribute. It will write an entry to a file called CatchSessErrors.log in the log directory where CF is installed: in CF 5, that is. In CFMX, the directory's called logs (as in cfusionmx\logs), and in BlueDragon, it's in the BlueDragon Server's work\cflog directory. It's writing out session.URLToken, which is a reserved variable in CFML for the session key (the CFID/CFTOKEN pair in CF 5). If you're not having them log in to give you any unique username, you could try their IP Address (cgi.http_host), which is offered in that example as well. The only risk there is that if they're using a Proxy, you may see the same values of IP address for the given CFID/CFTOKEN even if it's multiple users. As a last resort, you could write out (or create a hash of) their cgi.remote_user, cgi.http_user_agent, and cgi.http_accept, to try to distinguish users reported as having the same IP address. Anyway, the whole point of the exercise is to see if the same user (best indicated by some login username or their IP address) is getting different session tokens (CFID/CFTOKEN, as represented in session.URLToken). If they are, then there's something wrong on their end, not likely with your code at all. If you don't have access to the log files, you could write out to a separate file in the application directory with CFFILE. And if that's restricted, just drop back to using CFOUTPUT to write the values to the screen for the user to report to you. They and you will now have to track them over time to detect when the problem arises, but it's a solution. If you don't want that ugliness appearing on screen, you could have it done only in a special template that they call (the session variable issues should apply to all templates in a given directory), or you could write them to the screen in a way that's hidden unless they highlight it (such as using font color=white if outputting on a white screen, or using stylesheets). Hope any of these tips may help. Sounds like fodder for me to come up with a new article! :-) I'll look forward to hearing what others have to say on the subject. /charlie -Original Message- From: Sam Komolafe [mailto:[EMAIL PROTECTED] Sent: Friday, June 06, 2003 5:40 PM To: CF-Talk Subject: Session Variables Dropping Hi, Why could session variables be dropping intermetently on my app. The variables are properly locked. On each page I localize the variables by moving them to a local scope. Once in a while, this local variables which should always be there are not found. I am using CF5 Pro on a Win2000 Server. Thanks
Session Variables Dropping
Hi, Why could session variables be dropping intermetently on my app. The variables are properly locked. On each page I localize the variables by moving them to a local scope. Once in a while, this local variables which should always be there are not found. I am using CF5 Pro on a Win2000 Server. Thanks Sam ~| Archives: http://www.houseoffusion.com/cf_lists/index.cfm?forumid=4 Subscription: http://www.houseoffusion.com/cf_lists/index.cfm?method=subscribeforumid=4 FAQ: http://www.thenetprofits.co.uk/coldfusion/faq Get the mailserver that powers this list at http://www.coolfusion.com Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=89.70.4
Session variables dropping
I have an intermittent problem with the session scoped variables being dropped going from the frame definition template to the template within the frame. This is occurring on IE 6. I remember hearing at one point that IE 6 handles each separate frame as a separate window. Are there any known issues with how IE 6 handles session variables across frames? Lon Lentz Applications Developer and Keeper of the I.T. http://ProofitOnline.Com - Free 15 Day Trial __ Your ad could be here. Monies from ads go to support these lists and provide more resources for the community. http://www.fusionauthority.com/ads.cfm FAQ: http://www.thenetprofits.co.uk/coldfusion/faq Archives: http://www.mail-archive.com/cf-talk@houseoffusion.com/ Unsubscribe: http://www.houseoffusion.com/index.cfm?sidebar=lists
Session Variables Dropping Dead..
All my Session Variables are dropping dead!!! I posted to messages and no one has answered. This is across the entire server. No code has changed. I have Warm REboot Cold Reboot and the same problem. someone PLEASE throw Ideas at me! neil Archives: http://www.mail-archive.com/cf-talk@houseoffusion.com/ Unsubscribe: http://www.houseoffusion.com/index.cfm?sidebar=lists or send a message with 'unsubscribe' in the body to [EMAIL PROTECTED]
Re: Session Variables Dropping Dead..
Session variables die after a reboot, they are only temporary variables stored in the memory, not on the HD, bear this in mind... Gregory Harris Web Developer Stirling Bridge Group LLC - Original Message - From: "Neil H." [EMAIL PROTECTED] To: "CF-Talk" [EMAIL PROTECTED] Sent: Friday, November 10, 2000 12:54 PM Subject: Session Variables Dropping Dead.. All my Session Variables are dropping dead!!! I posted to messages and no one has answered. This is across the entire server. No code has changed. I have Warm REboot Cold Reboot and the same problem. someone PLEASE throw Ideas at me! neil -- -- Archives: http://www.mail-archive.com/cf-talk@houseoffusion.com/ Unsubscribe: http://www.houseoffusion.com/index.cfm?sidebar=lists or send a message with 'unsubscribe' in the body to [EMAIL PROTECTED] Archives: http://www.mail-archive.com/cf-talk@houseoffusion.com/ Unsubscribe: http://www.houseoffusion.com/index.cfm?sidebar=lists or send a message with 'unsubscribe' in the body to [EMAIL PROTECTED]
RE: Session Variables Dropping Dead..
Ideas: mmm, how about registry problems? or database problems if you have configured so... Remeber that the registry has a size limit. Jaime/ -Original Message- From: Neil H. [mailto:[EMAIL PROTECTED]] Sent: Friday, November 10, 2000 12:54 PM To: CF-Talk Subject: Session Variables Dropping Dead.. All my Session Variables are dropping dead!!! I posted to messages and no one has answered. This is across the entire server. No code has changed. I have Warm REboot Cold Reboot and the same problem. someone PLEASE throw Ideas at me! neil -- -- Archives: http://www.mail-archive.com/cf-talk@houseoffusion.com/ Unsubscribe: http://www.houseoffusion.com/index.cfm?sidebar=lists or send a message with 'unsubscribe' in the body to [EMAIL PROTECTED] Archives: http://www.mail-archive.com/cf-talk@houseoffusion.com/ Unsubscribe: http://www.houseoffusion.com/index.cfm?sidebar=lists or send a message with 'unsubscribe' in the body to [EMAIL PROTECTED]
